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Author Topic: NASA projects  (Read 116956 times)

Offline hesham

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NASA projects
« on: September 02, 2007, 09:59:46 am »
Hi,

We can speak about NASA projects which was never built.

During the end of 1970s,NASA had launched a program for Energy Efficient Aircraft,
a joint NASA/US industry research and development project to reduce by 50 per cent
the fuel consumption of future generation civil transport aircraft,the project was
for airliner aircraft powered by four rear mounted engines (look like Vickers VC-10),
I have a picture for the model but I can't send it.

Offline Jemiba

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Re: NASA projects
« Reply #1 on: November 09, 2007, 01:01:39 pm »
From Aviation Week October 1974, a photo of a model for an
energy efficient airliner, using composites, supercritical aerodynamics,
laminar flow control and fuselage boundary layer injection. Fuel savings
of about 55 % were expected ( against the 1974 standard) !
I think, this number already shows, that these concepts shouldn't be
regarded as "projects", but more as research for principles and techniques.   
It takes a long time, before all mistakes are made ...

Offline hesham

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Re: NASA projects
« Reply #2 on: November 10, 2007, 10:40:48 am »
Good find my dear Jemiba,

and the picture for the model which I have,was look like Vickers VC-10
with four rear mounted engines.

Offline hesham

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Re: NASA projects
« Reply #3 on: December 31, 2007, 10:11:42 am »
Hi,

the NASA high-speed tilt-rotor X-wing project,it is new for me.

http://www.flightglobal.com/PDFArchive/View/1988/1988%20-%200132.html
« Last Edit: March 15, 2011, 04:56:38 am by hesham »

Offline Jemiba

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Re: NASA projects
« Reply #4 on: January 01, 2008, 03:47:02 am »
Looks remarkably similar to the Bell-Boeing "supersonic combat tilt-rotor"
we had here http://www.secretprojects.co.uk/forum/index.php/topic,2140.15.html :
 
It takes a long time, before all mistakes are made ...

Offline hesham

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Re: NASA projects
« Reply #5 on: January 04, 2008, 08:42:30 am »
« Last Edit: March 15, 2011, 04:57:03 am by hesham »

Offline lantinian

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Re: NASA projects
« Reply #6 on: January 04, 2008, 09:57:04 am »
I will just make sure we don't miss the X-33

A subscale model (1/3) of a Single Stage To Orbit (SSTO) unmaned shuttle called the Venture Star.

The X-33 was designed to demonstrate several technologies that will enable low cost to orbit possible:
- aerospike engine (success)
- metallic thermal protection system (success)
- all composite fuel tank (failure)

After the good advice of the engineers, the program managers kept on with the composite tanks which failed in two consecutive test. By this time, the engineers have come up with a all aluminium design that was even lighter but did not have a chance to implement it.
A well known NASA official spoke to the Congress that is not worth to proceed unless all tree technologies can be tested. The importance of the composite tanks was due to the large civilian involvement in their fabrication.

An excellent article on the cancellation is here:
http://www.nasaspaceflight.com/content/?cid=4180

I found, flaterich had also a tread going on the X-33 here
http://www.secretprojects.co.uk/forum/index.php/topic,2756.0.html
« Last Edit: January 04, 2008, 09:59:10 am by lantinian »
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Offline hesham

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Re: NASA projects
« Reply #7 on: January 15, 2008, 09:46:06 am »
Yes my dear Jemiba,

and here is some NASA HSCT and SST.

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Re: NASA projects
« Reply #8 on: January 15, 2008, 10:37:11 am »
the second picture is the X47A scramjet demonstrator - a very short time after separation form its pegasus booster ..

Offline sferrin

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Re: NASA projects
« Reply #9 on: January 15, 2008, 11:20:33 am »
X-43
"DARPA Hard"  It ain't what it use to be.

Offline agricola64

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Re: NASA projects
« Reply #10 on: January 15, 2008, 12:24:08 pm »
yep . X43a .. sorry for the typo ..

Offline Antonio

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Re: NASA projects
« Reply #11 on: January 23, 2008, 05:35:14 am »
Many thanks for the link Hesham, what I really love from that document it's the Bell L-39 sweep wing research aircraft. I've never seen it before in flight and looks wonderful.

Offline Antonio

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Re: NASA projects
« Reply #12 on: March 21, 2008, 05:39:30 am »
Great finding Hesham! :)

Could you please post the source?

Thanks in advance

Offline hesham

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Re: NASA projects
« Reply #13 on: March 23, 2008, 10:14:56 am »
My dear Pometablava,

I found to you the ex-projects source;
http://history.nasa.gov/SP-4302/ch1.11.htm

And here is anther Ogee wing and delta wing SST projects.
http://history.nasa.gov/SP-4302/ch3.9.htm

Offline hesham

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Re: NASA projects
« Reply #14 on: March 25, 2008, 04:54:29 am »
Hi,

V-tail jet propulsion aircraft model and supersonic ramjet artist,
also the X-15 for hypersonic and a hypersonic model.
http://history.nasa.gov/SP-4305/ch8.htm
http://history.nasa.gov/SP-4305/ch10.htm
http://history.nasa.gov/SP-4305/ch12.htm
« Last Edit: March 25, 2008, 05:11:01 am by hesham »

Offline Barrington Bond

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Re: NASA projects
« Reply #15 on: March 25, 2008, 03:07:45 pm »
That tilt wing looks like a Herald to me?!

Regards,
Barry
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Offline hesham

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Re: NASA projects
« Reply #16 on: March 26, 2008, 04:55:10 am »
Good find my dear Overscan,

and NASA ducted fan concepts.
« Last Edit: October 12, 2012, 04:53:25 pm by hesham »

Offline hesham

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Re: NASA projects
« Reply #17 on: March 28, 2008, 05:43:48 am »
Hi,

the NASA subsonic,supersonic ans hypersonic projects.
http://www.hq.nasa.gov/office/aero/fap/aboutus.html

Offline hesham

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Re: NASA projects
« Reply #18 on: April 08, 2008, 05:29:35 am »
Hi,

a group of NASA projects,such as V/STOL fighter and transport aircraft.

http://history.nasa.gov/SP-440/ch8-2.htm
« Last Edit: March 15, 2011, 04:59:14 am by hesham »

Offline hesham

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Re: NASA projects
« Reply #19 on: April 09, 2008, 05:39:04 am »
Hi,

from NASA archive,a six propeller aircraft model and the early version of
X-2,notice for X-2 the slender tail fin.

http://history.nasa.gov/SP-440/ch4-6.htm
« Last Edit: March 15, 2011, 04:59:27 am by hesham »

Offline hesham

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Re: NASA projects
« Reply #20 on: April 21, 2008, 11:20:50 am »
Hi,

anther two NASA projects,each six jet engined aircraft,but one
was subsonic and the other was supersonic.

http://www.flightglobal.com/pdfarchive/view/1959/1959%20-%202996.html
« Last Edit: March 15, 2011, 04:59:50 am by hesham »

Offline hesham

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Re: NASA projects
« Reply #21 on: April 27, 2008, 12:52:51 pm »

Offline mz

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Re: NASA projects
« Reply #22 on: April 27, 2008, 05:01:01 pm »
The wind tunnel shapes include Apollo shapes (some of the famous "with vanes" design and some with the escape tower too) as well as reusable booster stages (the blunt cylinders with a flare at the bottom). So they are just some shapes that have been tested in the hypersonic wind tunnel for a wide variety of programs.

The Boeing plane looks like a Mini-Valkyrie.

Cruise and acceleration are conflicting design requirements. Thus it doesn't make sense to make a cruiser launch small craft or a booster that cruises.

Offline flateric

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Re: NASA projects
« Reply #23 on: April 27, 2008, 05:09:30 pm »
The Boeing plane looks like a Mini-Valkyrie.

It looks like and, actually, *it is* a Boeing's submission in a NASA study for SST technology applied for 500-mile radius supersonic cruise fighter for European air battle area.
http://www.secretprojects.co.uk/forum/index.php/topic,398.msg2550.html#msg2550
« Last Edit: April 27, 2008, 05:13:00 pm by flateric »
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Offline hesham

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Re: NASA projects
« Reply #24 on: May 11, 2008, 04:02:12 am »
Hi,

a suggestion for an athodyd aircraft by NACA.

http://www.flightglobal.com/pdfarchive/view/1946/1946%20-%201571.html
« Last Edit: March 15, 2011, 05:00:09 am by hesham »

Offline hesham

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Offline hesham

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Re: NASA projects
« Reply #26 on: June 08, 2008, 04:32:41 am »
Hi,

the NASA's drawing for the modifying of Glufstream II aircraft,which
used for propfan test assessment.

Offline hesham

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Re: NASA projects
« Reply #27 on: June 15, 2008, 12:27:02 pm »
Hi,

near-sonic transport wind-tunnel model,was with area ruling
and advanced supercritical wing.

http://oea.larc.nasa.gov/PAIS/Concept2Reality/supercritical.html
« Last Edit: March 15, 2011, 05:01:10 am by hesham »

Offline hesham

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Re: NASA projects
« Reply #28 on: June 16, 2008, 10:51:30 am »
Hi,

here is,a distributed propulsion with many engines applied to a
conventional trasnport aircraft,notice the circle tail,and the
Kuchemann's jet-wing concept.

http://scholar.lib.vt.edu/theses/available/etd-08252004-152011/unrestricted/jewalke2-thesis_v3.pdf
« Last Edit: March 15, 2011, 05:01:26 am by hesham »

Offline hesham

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Re: NASA projects
« Reply #29 on: June 27, 2008, 04:24:32 am »

Offline hesham

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Re: NASA projects
« Reply #30 on: July 02, 2008, 04:08:04 am »
Hi,

the NASA project of jet transport aircraft,it use the jet engines over wing nacelle.

Offline hesham

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Re: NASA projects
« Reply #31 on: July 03, 2008, 09:55:54 am »
Hi,

the NASA future jet transport aircraft.

Offline hesham

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Offline Matej

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Re: NASA projects
« Reply #33 on: July 09, 2008, 01:17:25 am »
I notice this particular design. Probably an early multivector attack mode unmanned aircraft proposal with carrier plane and two parasites?

Bizarre aviation expert.

Offline fightingirish

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Re: NASA projects
« Reply #34 on: July 09, 2008, 02:28:09 pm »
Quote
... multivector attack mode ...
;D Reminds me of the Star Trek: Voyager episode  "Message In A Bottle"
Slán,
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Slán ist an Irish Gaelic word for Goodbye.  :)

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Offline Matej

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Re: NASA projects
« Reply #35 on: July 16, 2008, 01:51:50 am »
Quote
... multivector attack mode ...
;D Reminds me of the Star Trek: Voyager episode  "Message In A Bottle"


Exactly, thats it. I love that word  :D

Bizarre aviation expert.

Offline hesham

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Re: NASA projects
« Reply #36 on: August 03, 2008, 03:53:09 am »

Offline Lauge

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Re: NASA projects
« Reply #37 on: August 06, 2008, 12:21:10 am »
Hi,

the NASA art CTOL design concept.
http://www.avidaerospace.com/publications/CAD_Lost_Art_or_Science.pdf

Tried to open the link, and failed miserably.

Does anyone have more info on the "Pulsed Ejector Thrust Augmentor" and the "Multi-Gas Generator Fan" concepts ?

Regards,

Thomas L. Nielsen
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Offline hesham

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Re: NASA projects
« Reply #38 on: August 06, 2008, 04:53:37 am »
Hi,

here is NASA 4 mach Air-Vehicle Baseline AVBL.
http://www.grc.nasa.gov/WWW/wind/papers/AIAA-2006-0016-Georgiadis.pdf

Offline hesham

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Re: NASA projects
« Reply #39 on: August 08, 2008, 05:09:25 am »
Hi,

a sketchs from NASA by W.H. Mason.
http://www.aoe.vt.edu/~mason/Mason_f/SD1L82pp.pdf

Offline flateric

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Re: NASA projects
« Reply #40 on: August 08, 2008, 05:56:49 am »
Again, Hesham, no NASA here at all.
"There are many disbelievers in
stealth, more than a few of them truly technically ignorant and proud of it." Sherm Mullin, Skunk Works

Offline hesham

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Offline flateric

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Re: NASA projects
« Reply #42 on: October 13, 2008, 01:47:24 pm »
Hi,

NASA twin engined fighter of 1987.
http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19870012440_1987012440.pdf

these are, again, not 'engines', but model supports
"There are many disbelievers in
stealth, more than a few of them truly technically ignorant and proud of it." Sherm Mullin, Skunk Works

Offline hesham

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Re: NASA projects
« Reply #43 on: November 04, 2008, 12:55:30 pm »

Offline hesham

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Re: NASA projects
« Reply #45 on: November 07, 2008, 04:04:26 am »

Offline flateric

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"There are many disbelievers in
stealth, more than a few of them truly technically ignorant and proud of it." Sherm Mullin, Skunk Works

Offline hesham

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Re: NASA projects
« Reply #47 on: November 11, 2008, 10:47:54 am »

Offline hesham

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Offline hesham

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Re: NASA projects
« Reply #49 on: November 17, 2008, 09:12:54 am »
Hi,

here is unknown aircraft to me,it was not X-2,because it had a mid wing,
and did't look like the Douglas D-558-2,because it had a low rear wing.
http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19930083056_1993083056.pdf

Offline hesham

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Re: NASA projects
« Reply #50 on: April 05, 2009, 10:09:36 am »

Offline hesham

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Re: NASA projects
« Reply #51 on: August 06, 2009, 11:34:04 am »
Hi,

here is NASA Sketch of rotor/wing planforms and table of properties.
http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19710001550_1971001550.pdf

Offline hesham

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Re: NASA projects
« Reply #52 on: August 07, 2009, 11:22:41 am »

Offline hesham

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Re: NASA projects
« Reply #53 on: October 29, 2009, 10:50:45 am »
Hi,

the three models which display here are look like XB-70.
http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19930090231_1993090231.pdf

Offline Skyblazer

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Re: NASA projects
« Reply #54 on: October 29, 2009, 10:56:34 am »
Picture L-58-256 especially reminds me of the SR-75/Blackstar carrier aircraft that has been hypothesized and allegedly observed according to AW&ST...

Offline hesham

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Re: NASA projects
« Reply #55 on: March 25, 2010, 10:02:17 am »
Hi,

We can speak about NASA projects which was never built.

During the end of 1970s,NASA had launched a program for Energy Efficient Aircraft,
a joint NASA/US industry research and development project to reduce by 50 per cent
the fuel consumption of future generation civil transport aircraft,the project was
for airliner aircraft powered by four rear mounted engines (look like Vickers VC-10),
I have a picture for the model but I can't send it.

Here is the NASA EEA (Energy Effcient Aircraft).

Offline RanulfC

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Re: NASA projects
« Reply #56 on: June 10, 2010, 05:57:00 am »
Hi,

http://www.nianet.org/workshops/docs/QA/presentations/ADS/Guynn.pdf
Uhm this link is broken or not available anymore, anyone have another "version" ? (I'm trying to figure out WHY there is a "pizza-delivery" UAV :) )

Thanks

Randy

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Offline Jemiba

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Re: NASA projects
« Reply #59 on: September 02, 2010, 03:41:54 am »
When NASA still was NACA, this concept for a prop driven aircraft was drawn, where
air and fuel would be ducted through hollow prop blades and ignited in combustion
chambers at the prop tips. The mixture would have been compressed by the centrifugal
forces and it was thought to be more economical, than conventional engines.
A tractor design was drawn, too, where air would pass through the hollow hub.
To me, the idea seems to be too similar to tip jet driven helicopters, which mostly
weren't economical at all, but maybe the higher number of revolutions, compared to a
rotor, would have done the trick ?
(from Aviation February 1946)
It takes a long time, before all mistakes are made ...

Offline Retrofit

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Re: NASA projects
« Reply #60 on: September 02, 2010, 04:34:20 am »
the idea seems to be too similar to tip jet driven helicopters, which mostly
weren't economical at all,

and very NOISY...

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Offline Skyblazer

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Re: NASA projects
« Reply #62 on: September 14, 2010, 12:34:54 am »
Nice! I could be wrong, but the "Emergency Car" and all related pictures have a Hiller feel to them... artwork, lettering, fuselage design.

Offline hesham

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Re: NASA projects
« Reply #63 on: September 14, 2010, 03:17:19 am »
Nice! I could be wrong, but the "Emergency Car" and all related pictures have a Hiller feel to them... artwork, lettering, fuselage design.

You are right my dear Stargazer,

it look like a Hiller design.

Here is the NASA spanloader model.

http://crgis.ndc.nasa.gov/historic/File:1979_spanloader_model_2_.jpg

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Re: NASA projects
« Reply #64 on: September 15, 2010, 03:57:46 am »

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Re: NASA projects
« Reply #65 on: September 15, 2010, 06:53:55 am »
Nice and interesting projects, especially Vstol civil aircraft concepts !  B)
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« Last Edit: September 16, 2010, 01:52:08 am by flateric »
"There are many disbelievers in
stealth, more than a few of them truly technically ignorant and proud of it." Sherm Mullin, Skunk Works

Offline flateric

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Re: NASA projects
« Reply #67 on: September 15, 2010, 06:47:39 pm »
In fact it doesnt change the fact that it was in-house and not contractor's study
"There are many disbelievers in
stealth, more than a few of them truly technically ignorant and proud of it." Sherm Mullin, Skunk Works

Offline Skyblazer

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Re: NASA projects
« Reply #68 on: September 27, 2010, 07:58:16 am »
Another unknown (to me) NASA project, the M-4 lifting body:



Two pictures can be downloaded here:
http://crgis.ndc.nasa.gov/historic/File:L-69-7525.jpg
http://crgis.ndc.nasa.gov/historic/File:L-69-7526.jpg

Offline fightingirish

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Re: NASA projects
« Reply #69 on: May 15, 2011, 02:32:13 am »

See from 7min 54s (474s) on. NASA Noise reduction and Heavy Lift Helicopter concepts.
Slán,
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Offline yasotay

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Re: NASA projects
« Reply #70 on: May 15, 2011, 10:28:52 am »

See from 7min 54s (474s) on. NASA Noise reduction and Heavy Lift Helicopter concepts.

Watching the MV-22 land at AHS was awesome.  Watching it leave was just as spectacular.
« Last Edit: May 15, 2011, 02:55:58 pm by yasotay »

Offline hesham

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Re: NASA projects
« Reply #71 on: October 06, 2011, 07:19:17 am »
« Last Edit: October 06, 2011, 07:21:30 am by hesham »

Offline Tophe

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Re: NASA projects
« Reply #72 on: October 06, 2011, 08:10:27 pm »
Interesting "Twin or Triple fuselage large airplanes", dated 2002 it seems according to your link. But is this NASA or Belgium research?
Your topic
http://www.secretprojects.co.uk/forum/index.php/topic,13847.0.html covers this Twin-Antonov, so it seems an overview of World possibilities, OK.
« Last Edit: October 06, 2011, 08:32:21 pm by Tophe »

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Re: NASA projects
« Reply #73 on: January 24, 2012, 03:16:11 pm »
NASA Wind tunnel model used to test the characteristics of supercritical wings.

Low-Speed Aerodynamic Performance of a High-Aspect-Ratio Supercritical-Wing Transport Model Equipped With Full-Span Slat and Part-Span Double-Slotted Flaps, Harry L. Morgan Jr & John W. Paulson Jr

http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19820007142_1982007142.pdf

Top. Side and top views of the model

Second. Closeup of the wing design

Third. View of model in 'flight' configuration

Fourth. View of model in 'landing' configuration

Bottom. Dimensions of the model (I've not been able to locate the scale of the model, so if anyone can find out?)
« Last Edit: January 24, 2012, 08:00:04 pm by Graham1973 »

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Re: NASA projects
« Reply #74 on: January 27, 2012, 01:33:00 pm »

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Re: NASA projects
« Reply #75 on: January 28, 2012, 06:13:49 am »
Perhaps we should merge the topics and eliminate the duplication.

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Re: NASA projects
« Reply #76 on: January 28, 2012, 07:53:26 am »
My suggestion is we should delete the present topic to avoid duplication. I can't see the utility of merging because we have just a duplication not a complementary topic/post.

Nevertheless I wait for more moderator feedback.

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Re: NASA projects
« Reply #77 on: February 23, 2012, 08:22:19 am »
Four engined jet-powered transport fitted with thrust reversers.

http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20040008240_2004003723.pdf

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Re: NASA projects
« Reply #78 on: February 27, 2012, 06:03:01 am »
More images of the mystery four engined jet-powered transport and the thrust reverser designs being tested on it.

http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20040005898_2004003573.pdf

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Re: NASA projects
« Reply #79 on: February 29, 2012, 01:52:38 am »
Graham, you posted the same pic twice. Did you mean for four different pics to be posted, or were there only three?

It was meant to be four different pictures. I've corrected the mistake.

Now, another of those generic test models, this one looks more like a 'modern' jet airliner rather than the XC-99 like model in my earlier posts. This one was used to test aerodynamic characteristics of a 'typical' jet airliner at simulated speeds between Mach 0.4 to 1.2.

http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19670009071_1967009071.pdf


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Re: NASA projects
« Reply #80 on: February 29, 2012, 12:56:00 pm »
Quote
A 1/9 scale model of an existing executive type jet transport refitted  with a supercritical wing was tested on in the 8 foot transonic pressure tunnel. The supercritical wing had the same sweep as the original airplane wing but had maximum thickness chord ratios 33 percent larger at the mean geometric chord and almost 50 percent larger at the wing-fuselage juncture. Wing pressure distributions and fuselage pressure distributions in the vicinity of the left nacelle were measured at Mach numbers from 0.25 to 0.90 at angles of attack that generally varied from -2 deg to 10 deg. Results are presented in tabular form without analysis.

http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19830002799_1983002799.pdf


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Re: NASA projects
« Reply #81 on: March 02, 2012, 02:40:40 pm »
Full size Cessna-like single engined plane used for configuration testing.

http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19700013310_1970013310.pdf

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Re: NASA projects
« Reply #82 on: March 21, 2012, 06:44:45 am »
« Last Edit: March 21, 2012, 01:43:11 pm by Graham1973 »

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Re: NASA projects
« Reply #83 on: March 23, 2012, 02:25:14 am »
Quote
SUMMARY

The performance, stability, and control characteristics of a series of parachutes with extendable flaps are presented for a range of free-stream velocities from 20 to 60 feet per second. The tests included the variation of both flap length and flap width. The maximum lift-drag ratio which could be obtained depended upon flap configuration, flap extension, and suspension line length. Aerodynamic data obtained during the tests indicate that the parachutes were statically stable at all values of lift-drag ratio up through the maximum value. Visual observations indicated an increase in dynamic stability as lift-drag ratio increased.

INTRODUCTION

Conventional parachutes have been used for the recovery of space vehicles, but they provided no control of the glide path and, consequently,  no choice of landing site. One means of providing glide-path control is through use of an extendable flap in one side of the canopy.

http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19620004429_1962004429.pdf
« Last Edit: March 23, 2012, 01:56:43 pm by Graham1973 »

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Re: NASA projects
« Reply #84 on: March 30, 2012, 04:18:44 am »
Quote
The M1-L lifting body concept employs a high volumetric efficiency forebody and an inflatable afterbody that is deployed to provide lift-to-drag ratios sufficient for horizontal landings. The purpose of the investigation described here was to determine the low-speed aerodynamic characteristics of a large-scale model with an inflatable afterbody.

In addition, a model with a rigid afterbody was tested as a datum for aeroelastic characteristics. Deployment of the inflatable afterbody increased the maximum lift-to-drag ratio (L/D) from less than 1 t o  slightly more than 2. This value was about 15 to 20 percent less than that for the model with the rigid afterbody.

Because a maximum L/D of about 2-1/2 is the minimum value required to accomplish a horizontal landing, this 20-percent reduction appeared to be the most significant effect of flexibility. Studies indicated that deployment of the inflatable afterbody is mechanically feasible.

http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19690029390_1969029390.pdf


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Re: NASA projects
« Reply #86 on: April 08, 2012, 01:13:27 am »
Embarrassed to ask this, but can anyone tell me how to convert the scale measurements into the actual figures... :-[

The information in the drawings is incomplete: they don't list what scale this model is. You need 2 points of data to calculate the third:
scale measurement / scale = full-size measurement
(where the scale is listed as a fraction, e.g. 1/72)

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Re: NASA projects
« Reply #87 on: April 08, 2012, 02:03:12 am »
Embarrassed to ask this, but can anyone tell me how to convert the scale measurements into the actual figures... :-[

Ahem: Investigation Of A 0.3 Scale Jet-Transport Model
 
Simply multiply the model dimensions (listed in feet) by 1/0.3 (i.e.3.3333) to get full-scale dimensions.
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Re: NASA projects
« Reply #88 on: April 11, 2012, 06:58:07 am »
Embarrassed to ask this, but can anyone tell me how to convert the scale measurements into the actual figures... :-[

Ahem: Investigation Of A 0.3 Scale Jet-Transport Model
 
Simply multiply the model dimensions (listed in feet) by 1/0.3 (i.e.3.3333) to get full-scale dimensions.

Thanks,

Now I know where I was going wrong..

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Re: NASA projects
« Reply #89 on: April 13, 2012, 10:26:18 pm »
Hi,


the Turboelectric propulation airliner.


http://www.aviationweek.com/aw/blogs/aviation_week/on_space_and_technology/index.jsp?plckController=Blog&plckScript=blogScript&plckElementId=blogDest&plckBlogPage=BlogViewPost&plckPostId=Blog:a68cb417-3364-4fbf-a9dd-4feda680ec9cPost:cbc39e6b-d381-4909-bf5d-981f6b1839fa

Interesting that they found a closing design for N+2 type designs with non-superconducting generators/motors and performance similar to a 737. Specifically the 737 bit. Though this size may be the current lower bound for the technology.

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Re: NASA projects
« Reply #90 on: May 22, 2012, 03:32:42 pm »

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Re: NASA projects
« Reply #91 on: May 24, 2012, 06:12:38 am »

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Re: NASA projects
« Reply #92 on: May 25, 2012, 03:47:20 pm »

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Re: NASA projects
« Reply #93 on: May 25, 2012, 04:16:50 pm »
Shades of ISINGLASS.
In God we trust, all others we monitor. :-p

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Re: NASA projects
« Reply #94 on: May 25, 2012, 04:42:29 pm »
Shades of ISINGLASS.

Doesn't surprize me, ISINGLASS was being worked on around that time, searching for "boost-glide" on the NTRS brings up a mix of designs including what looks like one of the early Dyna-Soar concepts.

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Re: NASA projects
« Reply #95 on: July 23, 2012, 06:02:09 pm »
Hi,


the Shapery Gyronautics Corporation is developing with NASA a VTOL design;


http://www.shaperyenterprises.com/Projects/Transportation/Gyronautics/gyrodescription.asp
« Last Edit: July 23, 2012, 06:05:14 pm by hesham »

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Re: NASA projects
« Reply #96 on: September 08, 2012, 04:11:42 pm »
 The Next Generation Air transportation aircraft;


http://www.mitre.org/news/digest/aviation/03_06/air_transportation.html

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Re: NASA projects
« Reply #97 on: September 15, 2012, 06:27:01 am »
 Here is a two NASA projects of the year 2012;

1- Compound Helicopter

2- Large helicopter
« Last Edit: September 15, 2012, 06:34:43 am by hesham »

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Re: NASA projects
« Reply #98 on: September 20, 2012, 09:06:29 am »

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Re: NASA projects
« Reply #99 on: October 11, 2012, 07:06:14 am »

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Re: NASA projects
« Reply #101 on: October 21, 2012, 08:33:40 am »

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Re: NASA projects
« Reply #102 on: October 31, 2012, 05:50:04 pm »
Hope this doesn't appear elsewhere...

Quiet Green Transport Concept B

Source: Evaluation of a Hydrogen Fuel Cell Powered Blended-Wing-Body Aircraft Concept for Reduced Noise and Emissions, February 2004

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Re: NASA projects
« Reply #103 on: November 01, 2012, 03:15:57 pm »
And here is the Quiet Green Transport Concept A from another report:

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Re: NASA projects
« Reply #104 on: November 01, 2012, 03:20:11 pm »
A very unusual design appearing incidentally in an unrelated report. Can someone identify it?

Source: http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19730022211_1973022211.pdf

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Re: NASA projects
« Reply #106 on: November 12, 2012, 02:08:50 pm »

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Re: NASA projects
« Reply #107 on: February 04, 2013, 05:53:57 am »
From 1988: Survey of Army/NASA Rotorcraft Aeroelastic Stability Research

Quote
Theoretical and experimental developments in the aeroelastic and aeromechanical
stability of helicopters and tilt-rotor aircraft are addressed. Included are the
underlying nonlinear structural mechanics of slender rotating beams, necessary for
accurate modeling of elastic cantilever rotor blades, and the development of dynamic
inflow, an unsteady aerodynamic theory for low-frequency aeroelastic stability
applications. Analytical treatment of isolated rotor stability in hover and forward
flight, coupled rotor-fuselage stability in hover and forward flight, and
analysis of tilt-rotor dynamic stability are considered. Results of parametric
investigations of system behavior are presented. and correlations between theoretical
results and experimental data from small- and large-scale wind-tunnel and
flight testing are discussed.
« Last Edit: February 04, 2013, 05:56:28 am by Grey Havoc »
The sole imperative of a government, once instituted, is to survive.

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Re: NASA projects
« Reply #108 on: March 03, 2013, 11:33:54 pm »

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Re: NASA projects
« Reply #109 on: March 13, 2013, 06:53:31 am »
The sole imperative of a government, once instituted, is to survive.

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Re: NASA projects
« Reply #110 on: March 26, 2013, 09:47:10 am »
The sole imperative of a government, once instituted, is to survive.

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Re: NASA projects
« Reply #111 on: March 28, 2013, 07:09:47 am »
Thought I'd pass this one on... It's called the "Ram-Booster" (and it's not a new idea, Dani Edar did a study for Boeing in the mid-80s for a jet-engine booster for space launch) and it uses a turbojet first stage using multiple fighter engines at full-military power to push a second stage ramjet to Mach-2. The ramjet runs from Mach-2 to around Mach-4 and @100,000ft where the third (rocket-powered) stage seperates and flys into orbit.
 
http://www.nasa.gov/offices/ipp/centers/dfrc/technology/DRC-010-039-Ram-Booster.html
 
Randy

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Re: NASA projects
« Reply #112 on: March 28, 2013, 09:45:37 am »
Hi,


the NASA SSBJ project Model.

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Re: NASA projects
« Reply #115 on: May 27, 2013, 07:54:35 pm »
NASA Fan-On-Flap STOL concept, with sixteen (16) trailing edge turbines, driven by four (4) jet engines on pods. This photo currently for sale on eBay, without the graffiti.

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Re: NASA projects
« Reply #116 on: June 25, 2013, 09:07:52 am »
The Next Generation Air transportation aircraft;


http://www.mitre.org/news/digest/aviation/03_06/air_transportation.html


Hi,


here is anther artist drawing to this NASA NGAT aircraft,with a modified wing tips.


http://www.nextgenaerosciences.com/news.html

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Re: NASA projects
« Reply #117 on: October 06, 2013, 07:55:43 am »

Quote
You're looking at a 5.8 percent scale model of a "futuristic hybrid wing body" undergoing subsonic wind tunnel testing at NASA's Langley research center. The model was sprayed with flourescent oil, resulting in patterns that illustrate patterns of air flow. If (when) they build a full-scale version of this thing, my vote is that they should keep this paint job.
The sole imperative of a government, once instituted, is to survive.

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Re: NASA projects
« Reply #118 on: October 06, 2013, 08:35:47 am »
That's nice Grey.

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Re: NASA projects
« Reply #119 on: October 19, 2013, 06:30:27 am »

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Re: NASA projects
« Reply #120 on: October 19, 2013, 07:49:46 am »
Quote
You're looking at a 5.8 percent scale model of a "futuristic hybrid wing body" undergoing subsonic wind tunnel testing at NASA's Langley research center. The model was sprayed with flourescent oil, resulting in patterns that illustrate patterns of air flow. If (when) they build a full-scale version of this thing, my vote is that they should keep this paint job.

Higher rez copies available at Glow with the Flow | NASA

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Re: NASA projects
« Reply #121 on: February 14, 2014, 05:33:48 pm »
Baseline Airliner Design making use of the Boost-Glide concept.

Quote
This document provides a systematic procedure by which the relative economic value of technology factors affecting design, configuration, and operation of boosf-glide transport can be evaluated.  Use of the methodology results  in  identification of first - order economic gains potentially achievable by projected advances in  each of the definable, hypersonic technologies.

Starting with a baseline vehicle, the formulas, procedures and forms which are integral parts of this methodology are developed. A demonstration of the methodology is presented for one specific boost-glide system.

http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19740010568_1974010568.pdf

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Re: NASA projects
« Reply #122 on: April 27, 2014, 05:08:00 am »
From L + K magazine,


I can define what was under the Grumman Gulfstream II model ?,a normal stand or what ?.

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Re: NASA projects
« Reply #123 on: April 27, 2014, 12:44:15 pm »
Regarding post # 119.
This looks like the early NASA STA (Shuttle Training Aircraft) with the side force control system. It was flown in this configuration until NASA decided that the excessive drag out weighed the benefit of side force necessary to replicate the shuttle orbiters.
« Last Edit: April 27, 2014, 12:47:33 pm by Dynoman »

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Re: NASA projects
« Reply #124 on: April 27, 2014, 02:31:32 pm »
Thank you Dynoman.

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Re: NASA projects
« Reply #125 on: May 17, 2014, 06:27:33 am »
From my files,


here is a three tilt-rotor designs,but I don't remember if we sent them before or not ?.

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Re: NASA projects
« Reply #126 on: June 27, 2014, 04:37:01 am »
Hi,


from NASA report; Artificial Intelligence Based Control Power Optimization on Tailless Aircraft


here is the Boeing/NASA DEP (Distributed Electrical Propulsion) vehicle.

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Re: NASA projects
« Reply #127 on: July 10, 2014, 07:58:53 pm »
Quote
NASA Announces Winners of Challenge to Design Hurricane-Tracking Uncrewed Aerial Systems
NASA has selected three winning designs solicited to address the technological limitations of the uncrewed aerial systems (UAS) currently used to track and collect data on hurricanes.
A team of students from Virginia Polytechnic Institute and State University (Virginia Tech) in Blacksburg captured first place in NASA’s University Aeronautics Design Challenge with its proposal for the “Gobble Hawk” high-altitude, long-endurance uncrewed aerial system for tracking and collecting data on hurricanes.

Sources:
http://aerospace.firetrench.com/2014/07/nasa-announces-winners-of-challenge-to-design-hurricane-tracking-uncrewed-aerial-systems/
http://aero.larc.nasa.gov/university-contest/
http://www.aeronautics.nasa.gov/competition_winners2014.htm
PDFs:
http://aero.larc.nasa.gov/files/2013/08/HALE-UAV-design-challenge.pdf
http://www.aeronautics.nasa.gov/pdf/1st-virginiatech_schmit-abstract.pdf
http://www.aeronautics.nasa.gov/pdf/2nd-purdue-abstract.pdf
http://www.aeronautics.nasa.gov/pdf/3rd-va-tech-500.pdf
Slán,
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Re: NASA projects
« Reply #128 on: July 11, 2014, 04:14:32 am »
Excellent my dear Rolf.

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Re: NASA projects
« Reply #129 on: July 24, 2014, 08:00:07 am »
Hi,


in a PDF file about School Engineerin,Georgia Institute of Technology,there is four projects
for NASA,the 1 & 2 is very familiar to me,aren't them ?.


https://smartech.gatech.edu/bitstream/handle/1853/32620/e-16-501_83233.pdf;jsessionid=98E159BCC831E708089C9CD23195628D.smart2?sequence=1

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Re: NASA projects
« Reply #130 on: July 24, 2014, 11:51:04 am »
#1 is a not-very-good drawing of the Northrop N-309.

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Re: NASA projects
« Reply #131 on: July 24, 2014, 04:37:32 pm »
#1 is a not-very-good drawing of the Northrop N-309.




Yes it is,and the # 2 looks like a Boeing design.

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Re: NASA projects
« Reply #132 on: August 04, 2014, 11:43:28 am »
Hi,


who can ID thois NASA SST variable wing sweep wing with free Supersonic Transport Model
circa 1967 ?.



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Re: NASA projects
« Reply #133 on: August 05, 2014, 03:49:08 am »
Hi,


who can ID thois NASA SST variable wing sweep wing with free Supersonic Transport Model
circa 1967 ?.





Hi,


it looks like General Dynamics F-111 derivative.

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Re: NASA projects
« Reply #134 on: August 10, 2014, 10:56:20 am »
Hi,


in a PDF file about School Engineerin,Georgia Institute of Technology,there is four projects
for NASA,the 1 & 2 is very familiar to me,aren't them ?.


https://smartech.gatech.edu/bitstream/handle/1853/32620/e-16-501_83233.pdf;jsessionid=98E159BCC831E708089C9CD23195628D.smart2?sequence=1


The second aircraft looks like Boeing Model-984;


http://www.secretprojects.co.uk/forum/index.php/topic,6202.msg51088.html#msg51088

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Re: NASA projects
« Reply #135 on: September 03, 2014, 07:38:28 am »
Hi,


here is the GE UDF prop-fan engine and artist imagine for military transport aircraft and
UAV powered by this engine,page 67;


http://books.google.ca/books?id=rgAAAAAAMBAJ&printsec=frontcover&dq=popular+science+1985&hl=en&sa=X&ei=FiEHVMOIEYjXyQPvg4LQCw&ved=0CBwQ6AEwAA#v=onepage&q=popular%20science%201985&f=false




Offline Skyblazer

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Re: NASA projects
« Reply #136 on: September 03, 2014, 10:49:48 am »
Pretty! Especially that UAV, unlike anything I've seen before. They deserve to be blown up a bit (see attachments).

I have always wondered why UDF didn't succeed. At the end of the 1980s it really did seem like a highly promising solution, destined to a bright future...
« Last Edit: September 03, 2014, 10:55:24 am by Skyblazer »

Offline ekiqa

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Re: NASA projects
« Reply #137 on: September 03, 2014, 01:17:15 pm »
I have always wondered why UDF didn't succeed.

The Oil Embargo ended and gas prices dropped.

Offline fightingirish

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Re: NASA projects
« Reply #138 on: September 03, 2014, 01:48:45 pm »

The Oil Embargo ended and gas prices dropped.
And the fast spinning props on the UDF's are still too loud during take-off und landing.
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Offline blackstar

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Re: NASA projects
« Reply #139 on: September 03, 2014, 09:34:24 pm »

The Oil Embargo ended and gas prices dropped.
And the fast spinning props on the UDF's are still too loud during take-off und landing.

Yeah, but... that's because the early work on the UDF's was about fuel efficiency. They maximized that. They can go back and work on reducing the noise. Don't say it's impossible just because they have not tried yet.

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Re: NASA projects
« Reply #140 on: September 09, 2014, 04:02:37 am »

Offline hesham

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Re: NASA projects
« Reply #141 on: September 25, 2014, 04:37:57 am »
From Aviation Week October 1974, a photo of a model for an
energy efficient airliner, using composites, supercritical aerodynamics,
laminar flow control and fuselage boundary layer injection. Fuel savings
of about 55 % were expected ( against the 1974 standard) !
I think, this number already shows, that these concepts shouldn't be
regarded as "projects", but more as research for principles and techniques.


And from Popular Science,page 81;


http://books.google.com.eg/books?id=GQEAAAAAMBAJ&pg=PA81#v=onepage&q&f=false

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Re: NASA projects
« Reply #142 on: November 07, 2014, 04:33:46 am »
Hi,


here is a NASA box-wing aircraft Model.

Offline Tigershark

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Re: NASA projects
« Reply #143 on: November 07, 2014, 09:46:45 am »
Incredible design by NASA!

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Re: NASA projects
« Reply #144 on: November 07, 2014, 09:51:07 am »
NASA projects are very interesting! Here is two very innovative atmospheric satellite UAVs.

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Re: NASA projects
« Reply #145 on: November 07, 2014, 01:39:24 pm »
Great find Tigershark.

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Re: NASA projects
« Reply #147 on: December 05, 2014, 03:58:33 am »
From my dear Cy-27 Russian site;


here is some NASA concepts,the second one is from Boeing.

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Re: NASA projects
« Reply #148 on: December 05, 2014, 05:23:07 am »
Also from 20/1980 file,


here is a transport,flying boat and fighter aircraft used the USB system.

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Re: NASA projects
« Reply #149 on: December 05, 2014, 05:41:43 am »
I have always wondered why UDF didn't succeed. At the end of the 1980s it really did seem like a highly promising solution, destined to a bright future...

For some of them it was high noise levels.  Unacceptable bystander noise, plus damage to adjacent airframe structure.  Gas prices are back to the levels seen during the first oil embargo, and still no interest in UDF.
Bill Walker

Offline Skyblazer

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Re: NASA projects
« Reply #150 on: December 05, 2014, 09:50:47 am »
I have always wondered why UDF didn't succeed. At the end of the 1980s it really did seem like a highly promising solution, destined to a bright future...

For some of them it was high noise levels.  Unacceptable bystander noise, plus damage to adjacent airframe structure.  Gas prices are back to the levels seen during the first oil embargo, and still no interest in UDF.

Thanks for the answer, Bill! :-)

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Re: NASA projects
« Reply #151 on: December 25, 2014, 07:50:36 am »
Hi,


the Scientist I.E.Garrick has some ideas for the future,here is a tailless or flying
wing tanker aircraft.


http://arc.aiaa.org/doi/abs/10.2514/3.58696?journalCode=ja

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Re: NASA projects
« Reply #152 on: January 11, 2015, 06:32:48 am »
Hi,


from NASA report; Artificial Intelligence Based Control Power Optimization on Tailless Aircraft


here is the Boeing/NASA DEP (Distributed Electrical Propulsion) vehicle.

Greased Lightening and the DEP concept seems to have morphed a bit. Joby Aviation seems to be doing the DEP vehicle as part of NASA's LEAPtech initiative (with ESaero, the guys who did the N+3 study for distributed electric propulsion aircraft, who later found a working N+2 class 737-sized design using non-superconducting wiring)

http://www.jobyaviation.com/LEAPTech/

Notably, Joby seems to working on 2 additional concepts, the Lotus and the S2. Lotus is apparently a solution to the "Dos Samara" VTOL variant concept's usage of single bladed wingtip rotors, by using a folding rotor geometry to mimic bird wingtip feathers such that when in hover, you have a more balanced  two bladed rotor. S2 appears to be the spiritual successor to Greased Lightening GL-10, but switches from tiltwing to tiltrotor. The general assumption seems to be to use NASA funding for the LEAPtech demonstrator to improve electric motor performance to levels usable by Louts/S2, as Joby has an aviation oriented electric motor divison.

I'm a little curious how that all compares to motors from Launch Point, who allegedly had the highest power/weight ratio motor of its class when first made.

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Re: NASA projects
« Reply #153 on: January 11, 2015, 07:20:58 am »
Thank you Ouroboros for your explanations.

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Re: NASA projects
« Reply #154 on: January 17, 2015, 05:25:48 am »
The sole imperative of a government, once instituted, is to survive.

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Re: NASA projects
« Reply #156 on: June 07, 2015, 09:07:42 am »
« Last Edit: July 03, 2017, 02:56:40 am by flateric »
COVERT SHORES: www.hisutton.com

Offline Grey Havoc

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Offline Grey Havoc

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Offline hesham

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Re: NASA projects
« Reply #159 on: June 10, 2015, 05:37:39 am »

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Re: NASA projects
« Reply #160 on: September 21, 2015, 05:03:38 am »

http://nypost.com/2015/09/20/nasa-working-on-space-shotgun-to-blast-asteroids/

A bit of hype in the title, but interesting none the less.
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Re: NASA projects
« Reply #161 on: October 03, 2015, 04:44:13 am »
From The Aviation Annual 1947.

Offline fightingirish

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Re: NASA projects
« Reply #162 on: November 01, 2015, 08:20:20 am »
Quote
Remotely Piloted PTERA Bridges Gap Between Wind Tunnel and Crewed Flight-Testing
On October 22, researchers from NASA’s Armstrong Flight Research Center at Edwards Air Force Base, California, and Area-I, Inc., of Kennesaw, Georgia, successfully conducted the maiden flight of a remotely piloted test bed for cutting edge aviation and space technologies. The Prototype-Technology Evaluation and Research Aircraft (PTERA) is a versatile flying laboratory bridging the gap between wind-tunnel experiments and crewed flight-testing...

NASA Armstrong Fact Sheet: Prototype-Technology Evaluation and Research Aircraft (PTERA)

Link:
http://www.nasa.gov/centers/armstrong/news/FactSheets/FS-108-AFRC.html
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Re: NASA projects
« Reply #163 on: November 02, 2015, 07:31:24 pm »
Hi,

NASA spanloader cargo aircraft.

http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19900004900_1990004900.pdf

~5% static margin during landing and they thought that was okay for a potentially non fly-by-wire aircraft? For perspective the UN-stable Formula 1 air racers have a static margin similar to this and are a real handful.

80% drag reduction with active laminar flow control with that thick of an airfoil at Mach .75?

Plus all the other specs paint the picture that a normal tube and wing config would be more efficient in all aspects.

To design an airplane is nothing
To build an airplane is something
To fly is everything

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Re: NASA projects
« Reply #164 on: November 03, 2015, 03:54:12 am »
Thank you Wahubna for your analysis.

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Re: NASA projects
« Reply #165 on: November 29, 2015, 04:21:22 am »

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Re: NASA projects
« Reply #166 on: November 29, 2015, 04:26:13 am »
And three Elecrtic Powered aircraft.

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Re: NASA projects
« Reply #167 on: December 30, 2015, 10:35:44 pm »
Proposed cargo glider for use with Boeing 747 towing aircraft. The tow planes studied were standard (4 engine) and enhanced (6 engine) versions of the Boeing 747.

Preliminary study of tug-glider freight systems utilizing a Boeing 747 as the tug

http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19770011174.pdf

Offline Grey Havoc

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Re: NASA projects
« Reply #168 on: December 31, 2015, 04:01:21 am »
Proposed cargo glider for use with Boeing 747 towing aircraft. The tow planes studied were standard (4 engine) and enhanced (6 engine) versions of the Boeing 747.

Preliminary study of tug-glider freight systems utilizing a Boeing 747 as the tug

http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19770011174.pdf

1977, eh. They were assuming (correctly) that there would be another oil crisis in the near future, not to mention the already high extant oil prices. Pity this wasn't proceeded with. I wonder if there was any USAF interest in this for REFORGER?
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Re: NASA projects
« Reply #169 on: December 31, 2015, 04:03:41 am »
Great find Graham.

Offline Graham1973

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Re: NASA projects
« Reply #170 on: December 31, 2015, 04:27:16 am »
Proposed cargo glider for use with Boeing 747 towing aircraft. The tow planes studied were standard (4 engine) and enhanced (6 engine) versions of the Boeing 747.

Preliminary study of tug-glider freight systems utilizing a Boeing 747 as the tug

http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19770011174.pdf

1977, eh. They were assuming (correctly) that there would be another oil crisis in the near future, not to mention the already high extant oil prices. Pity this wasn't proceeded with. I wonder if there was any USAF interest in this for REFORGER?

No idea, the study concluded that the idea was economically marginal and one of their hopes was that the military would become interested enough to take the study to the next stage (Eg Wind Tunnel testing and hopefully construction of flight hardware...)

Offline Graham1973

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Re: NASA projects
« Reply #171 on: January 01, 2016, 01:36:40 am »
Evaluation of effectiveness of various devices for attenuation of trailing vortices based on model tests in a large towing

Quote
The effectiveness of various candidate aircraft-wing devices for attenuation of trailing vortices generated by large aircraft is evaluated on basis of results of experiments conducted with a 0.03-scale model of a Boeing 747 transport aircraft using a technique developed at the HYDRONAUTICS Ship Model Basin. Emphasis is on the effects produced by these devices in the far-field (up to 8 kilometers downstream of full-scale generating aircraft) where the unaltered vortex-wakes could still be hazardous to small following aircraft. The evaluation is based primarily on quantitative measurements of the respective vortex velocity distributions made by means of hot-film probe traverses in a transverse plane at selected stations downstream. The effects of these altered wakes on rolling moment induced on a small following aircraft are also studied using a modified lifting-surface theory with a synthesized Gates Learjet as a typical example. Lift and drag measurements concurrently obtained in the model tests are used to appraise the effects of each device investigated on the performance characteristics of the generating aircraft.

To cut to the chase, winglets mounted on the underside of the wing proved the most effective at reducing vortex generation, but nothing prevented the vortexes from being dangerous 4.5km behind the aircraft.

http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19740007597.pdf

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Re: NASA projects
« Reply #172 on: January 07, 2016, 08:20:52 am »
Here is the NASA M-wing and W-wing aircraft.

http://archive.aviationweek.com/issue/19570715#!&pid=50

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Re: NASA projects
« Reply #173 on: January 07, 2016, 01:17:23 pm »
« Last Edit: January 07, 2016, 01:55:50 pm by PaulMM (Overscan) »

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Re: NASA projects
« Reply #174 on: January 30, 2016, 05:53:42 am »

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Re: NASA projects
« Reply #175 on: February 02, 2016, 08:26:30 am »

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Re: NASA projects
« Reply #176 on: February 07, 2016, 07:25:17 am »

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Re: NASA projects
« Reply #177 on: March 12, 2016, 07:37:01 am »

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Re: NASA projects
« Reply #178 on: March 13, 2016, 05:34:37 am »

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Re: NASA projects
« Reply #180 on: June 12, 2016, 07:23:32 am »
Hi,

here is a two NASA Projects,for new civil aircraft concepts from 1984.

http://archive.aviationweek.com/image/spread/19840305/27/1


Offline fightingirish

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Re: NASA projects
« Reply #181 on: August 10, 2016, 12:19:55 pm »
NASA.gov: Five New Ideas to be Explored by NASA Aeronautics Teams

Picture quotation:
Quote
NASA researchers are examining mechanical methods for moving a segment of an airplane's outer wing in flight in order to allow designers to use smaller tails, which would reduce fuel use and emissions.
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Offline hesham

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Re: NASA projects
« Reply #182 on: August 11, 2016, 04:34:26 am »
I sent like this idea in aircraft design from my creation to Boeing company from more than 6 years ago.

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Re: NASA projects
« Reply #184 on: July 24, 2018, 04:55:22 am »

Offline Grey Havoc

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Re: NASA projects
« Reply #185 on: September 21, 2018, 09:11:42 am »
https://www.nasa.gov/feature/metal-with-memory-f-18-wing-fold


Part of the Spanwise Adaptive Wing Project.
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Offline Foo Fighter

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Re: NASA projects
« Reply #187 on: September 22, 2018, 10:08:42 am »
Part of the Spanwise Adaptive Wing Project.

They seem to have, like a lot of the youtube video's, an unhealthy fixation on musical accompaniment.  It is soooooo last decade, peeps.

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Re: NASA projects
« Reply #188 on: November 08, 2018, 07:11:09 am »
Amazing concept,I did something like this but differed a little from my creation,

https://crgis.ndc.nasa.gov/historic/File:L-63-3042.jpg

Offline fightingirish

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Re: NASA projects
« Reply #189 on: December 27, 2018, 01:23:58 pm »
IMHO a study model of a NASA experimental high altitude research aircraft. It is probably powered by two (or one) turbocharged piston engines and features an extremely long span wing.
Quote
nasa perseus design study model
https://flic.kr/p/2dNPm8g
https://flic.kr/p/2dJjF3U
https://flic.kr/p/2dNPnB8
https://flic.kr/p/REXgM9
https://flic.kr/p/2cq8TdB
https://flic.kr/p/REXibS
Slán,
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Re: NASA projects
« Reply #190 on: December 28, 2018, 03:53:34 am »
Nice find my dear Rolf.

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Re: NASA projects
« Reply #191 on: March 12, 2019, 08:20:58 am »
Here is the NASA M-wing and W-wing aircraft.

http://archive.aviationweek.com/issue/19570715#!&pid=50

Also from Ali Nuove 9/1957.