US VSTOL Projects

[hesham]

Hi,

Performance of V/STOL and STOVL Fighter Aircraft
W.P. Nelms
http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19840014468_1984014468.pdf

[Summary of various proposals by different manufacturers - Admin]

 

[Antonio]

Interesting pics Hesham, thanks!

Please, could you post more info about that Bell GATR and the Gyro SSTOL?.

 

[Lauge]

Interesting pics Hesham, thanks!

Please, could you post more info about that Bell GATR and the Gyro SSTOL?.

As far as the "Gyro SSTOL" (AKA "PALV", by Spark Design), it has been featured at Gizmag.com: http://www.gizmag.com/go/3323/

Regards,

Thomas L. Nielsen
Denmark

 

[hesham]

Interesting pics Hesham, thanks!

Please, could you post more info about that Bell GATR and the Gyro SSTOL?.

Thank you my dear Pometablava,
and sorry,I tried to make a search about it,but I don't find a more info.

 

[hesham]

And from the same source;

http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19730018069_1973018069.pdf

 

[Antonio]

Hi John,

please try the forum's search engine, you'll love it


GETOL:

http://www.secretprojects.co.uk/forum/index.php/topic,3457.0/highlight,getol.html

http://www.secretprojects.co.uk/forum/index.php/topic,219.0/highlight,getol.html (post #14)

 

[GTX]

Is it just me or is the low wing version just asking for trouble .

Regards,

Greg

 

[hesham]

Hi,

notice the companies projects.
http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19910010799_1991010799.pdf

 

[hesham]

Hi,

here is a large-scale wind-tunnel V/STOL transport model.
http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19720010337_1972010337.pdf

 

[hesham]

Hi,

(A V-22 Wing And Prop-rotor System Mounted On The Saab 2000
Body Leads To An Aircraft With A Comparatively Poor Lift To Drag
Ratio In Cruise Flight Because The Wing Span Is Too Short).
http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19960047059_1996071155.pdf

 

[yasotay]

True, but in the conclusion of the document they point out that the tilt-rotors to date have been optimized for other requirements than cruise efficiency. In fact MV-22 chopped several feet of rotor off the original JVX wing and rotor to make sure that it would fit on the ships. Most of the recent NASA Tilt-rotor studies optimize for cruise efficiency.

 

[JJC]

http://www.aiaa.org/tc/vstol/unbuilt/ewr/index.html

 

[hesham]

My dears and my friends,

here is many VSTOL and VTOL projects,from many companies such as;
Boeing,Bell ,Vertol,Kaman,Lockheed and VFW.
http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19910016825_1991016825.pdf

 

[hesham]

And;

 

[yasotay]

My dears and my friends,

here is many VSTOL and VTOL projects,from many companies such as;
Boeing,Bell ,Vertol,Kaman,Lockheed and VFW.
http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19910016825_1991016825.pdf

I have this document. It is actually pretty good at laying out the implications of the varied VTOL designs it describes. If I recall correctly it decides that the folding tilt rotor is optimal.

 

[hesham]

My dears and my friends,

there is many unknown projects to me in previous 16 pictures.But what
is happening to sending images ?.

 

[flateric]

everything works for me OK with images

 

[hesham]

My dears and my friends,

there is many unknown projects to me in previous 16 pictures.

please notice the many unknown projects,and may be the Kaman project
was K-750.

 

[flateric]

Hesham, it's time to spill the beans. We want this paper number!

 

[AeroFranz]

seriously
where do i find this on the NTRS?

 

[flateric]

...and that we want that Boeing VHLH, too!

 

[hesham]

Hesham, it's time to spill the beans. We want this paper number!

My dear Flateric,

I sent before the source,here is;
http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19910016825_1991016825.pdf

and here is anther US VTOL projects;
http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19910016825_1991016825.pdf

 

[hesham]

My dears and my friends,

here is many VSTOL and VTOL projects,from many companies such as;
Boeing,Bell ,Vertol,Kaman,Lockheed and VFW.
http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19910016825_1991016825.pdf

Also a strange Boeing concept.

And anther VTOL aircraft;
http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19940021648_1994021648.pdf

 

[hesham]

Hi,

some VTOL designs and concepts.

 

[hesham]

Hi,

a more VTOL concepts.

 

[hesham]

A very strange tilt-rotor aircraft concepts for many companies,it's new for me.
http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19730020244_1973020244.pdf

 

[AeroFranz]

while we're talking about the Mu-2, I have seen a brochure of an Mu-2 with twin upper surface blowing turbofan engines. must have been around the time NAL was playing with the ASKA demonstrator.

 

[AeroFranz]

I couldn't find the Japanese brochure of the Mu-2 with twin USB engines, but i did find a three view of a four engined version a NASA engineer proposed. Don't know if it ever made it into a technical report, this was very preliminary work.

 

[Simon666]

The one possibility that comes to my mind is something close to the X-50A: the lift generated by the Y wing is too low.

Lift to drag ratios for these things are also usually not too impressive, range 4-7.

 

[hesham]

Hi,

http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19750011151_1975011151.pdf

 

[overscan (PaulMM)]

Hesham, these are generic concepts (as far as I can see) from a Soviet paper translated by NASA. How is that a US VSTOL project?

 

[hesham]

Hesham, these are generic concepts (as far as I can see) from a Soviet paper translated by NASA. How is that a US VSTOL project?

My dear Overscan,

I think the Soviet aircraft were in the early sections only,and in the page 247 some western
aircraft,and here is anther table for the western aircraft in the same source,page 257;
http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19750011151_1975011151.pdf

 

[hesham]

Thank you dear Flateric,

but the reference is not right.
Also the NASA VTOL and STOL AIRCRAFT.
http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19660015317_1966015317.pdf

from the same source;
page 206, NASA,NorAir,Bell,Lockheed and North American.

 

[Stargazer]

The table given by Hesham above mentions a US program designated "D-2240". It is described as having "4 turboprop engines with propellers in circular channels". At first one would think of another derivative of the Bell X-22 (D-2127, a program which also spawned projects such as the D-2020/2022 or D-2064). But then Douglas also had a similar project on the shelf... at the same time... and their D- series was also in the 2000 range at the time... (a picture of the said project is shown below). So what do you think? Does the chart describe a Bell or a Douglas project?

 

[yasotay]

Where might one go to find more information on the Douglas duct fan projects?

 

[hesham]

Thank you dear Flateric,

but the reference is not right.
Also the NASA VTOL and STOL AIRCRAFT.
http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19660015317_1966015317.pdf

Also from the same source;.

 

[hesham]

Hi,

here is a Model for Roll up rotor concept VTOL aircraft.

 

[Stargazer]

Any source? Company? Country? Timespan?

 

[Jemiba]

" ...source"

Probably http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19960023621_1996039476.pdf

Sounds funny, a rotor working like a tape measure !

 

[Stargazer]

Don't like the inverted swastika-shaped rotor much...