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DSE

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Grey Havoc said:
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
 

Graham1973

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Baseline Airliner Design making use of the Boost-Glide concept.

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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hesham

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From L + K magazine,


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

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Dynoman

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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.
 

hesham

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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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hesham

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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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fightingirish

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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
 

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hesham

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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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Stargazer2006

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#1 is a not-very-good drawing of the Northrop N-309.
 

hesham

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Skyblazer said:
#1 is a not-very-good drawing of the Northrop N-309.



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

hesham

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hesham said:
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.
 

hesham

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Stargazer2006

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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...
 

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fightingirish

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ekiqa said:
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.
 

blackstar

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fightingirish said:
ekiqa said:
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.
 

hesham

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Jemiba said:
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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hesham

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Hi,


here is a NASA box-wing aircraft Model.
 

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Grey Havoc

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http://gizmodo.com/nasa-finally-tests-its-shape-shifting-airplane-wings-1656775362
 

hesham

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From my dear Cy-27 Russian site;


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

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Bill Walker

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Skyblazer said:
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.
 

Stargazer2006

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Bill Walker said:
Skyblazer said:
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! :)
 

hesham

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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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ouroboros

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hesham said:
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.
 

hesham

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Thank you Ouroboros for your explanations.
 

Grey Havoc

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http://www.space.com/28132-nasa-airship-challenge.html
 

Grey Havoc

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Via Slashdot: http://www.theverge.com/2015/1/23/7879311/nasa-mars-autonomous-helicopter-drone
 

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Concept art of cleaner supersonic flight http://www.nasa.gov/press-release/nasa-invests-in-future-of-aviation-with-supersonic-research-projects
 

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Grey Havoc

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http://www.flightglobal.com/news/articles/nasa-awards-studies-for-low-boom-supersonic-transports-413075/
 

Grey Havoc

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Unfortunately, the latest test of the Low-Density Supersonic Decelerator (LDSD), which occurred yesterday was only a partial success:

http://www.space.com/17933-nasa-television-webcasts-live-space-tv.html

http://www.spacedaily.com/reports/NASA_flying_saucer_deploys_partially_on_test_999.html

http://www.latimes.com/science/sciencenow/la-sci-sn-mars-flying-saucer-ldsd-test-nasa-20150605-story.html


A bit of background to the test: http://www.space.com/29551-nasa-flying-saucer-mars-landing-test.html
 
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