US Supersonic Transport(SST) Program post-1971

[Sundog]

Here are some HSCT (High Speed Civil Transport) Designs from Aviation Week.

 

[blackkite]

Skybolt, KL_Lesnick, Flateric and Jozef. I scanned some post-1971 US SST drawings from Japanese AVIATION JOURNAL magazine in 1984 to 1985. Among these drawings, T-tail VG design which SKybolt told us is included. It had full time stability augmentation system(SAS) and applied CCV technology.

 

[KJ_Lesnick]

Thank you very much. I really appreciate the diagrams.

KJ

 

[PlanesPictures]

How to do these all really beatiful birds?

 

[Skybolt]

Among these drawings, T-tail VG design which SKybolt told us is included.

Well, actually no. The T-tail I mentioned was an early-1968 Boeing design. Langley re-used the idea (BTW, their favorite one by then was SCAT 15F- based) to explore the tail-impingement problem. Anyway, thanks for the scans. The Boeing delta one was the blended-fuselage version of the 2707-300 that the company rejected for building and expecially security (emergency evacuation) problems.

 

[blackkite]

NASA's study in 1982. According to NASA, compered with same cross sectional area single fuselage, drug decrease in supersonic speed because of pressure interaction of each fuselage and structural weight is smaller. M shape wing type has best lift to drag ratio and followed straight middle wing type.

 

[KJ_Lesnick]

NASA's study in 1982. According to NASA, compered with same cross sectional area single fuselage, drug decrease in supersonic speed because of pressure interaction of each fuselage and structural weight is smaller. M shape wing type has best lift to drag ratio and followed straight middle wing type.

Do you have any L/D ratio figures available for the Straight-middle-wing and M-wing type?

 

[blackkite]

Sorry I have no data about L/D of this design, may be NASA still keep the data.

 

[Skybolt]

No, it is simply drowned in tons of date they are releasing on the NTRS server. I have the relevant documents somewhere.

 

[blackkite]

Hi all! This chart is based on JAXA's report.

 

[blackkite]

Hi all! These drawings are NASA's study in 1971 to increase low speed performance using large trailing edge flaps and jet exhaust gas by engines position review. But the interaction between jet exhaust gas and the fuselage, and noise vibration fatigue are problem.(From Japanese AVIATION JOURNAL MAGAZINED in 1984.)

 

[Skybolt]

A good introduction to Supersonic Cruise Technology in NASA up to the end of the '70s. Useful to read before delving in the thousands of pages that has been declassified. Enjoy.

http://hdl.handle.net/2060/19850020600

 

[blackkite]

Many thanks Skybolt! I knew this report about 25 years ago, and had very strong interest. Few years ago I wanted to get this report and asked GPO how to get this. But their answer was they did not treat this report. I disappointed very much that day.Today we can study this report. It is as a dream.

 

[Skybolt]

And now, for going graphical. These are some of the concepts developed by NASA (Langley) and contractors (Boeing, MDD, Lockheed, Kentron) in the frame of the SCAR/SRC research program, expecially in late '70s-early80's.
Of great interest is the business jet concepts, that was meant as a double-use configuration, i.e. supersonic cruise long range interceptor armed with guided missile. Both NASA/Kentron and Boeing worked on the concept (you'll recognize a well known pre-ATF Boeing concept...) . The Boeing blended depicted here was a further evolved configuration, ended in 1977. It had a 733 series designation, a 750.000 lbs MTOW and was meant for transpacific routes. I have a report on that. Will post detailed drawing and inboard details (new landing gear, too).

 

[blackkite]

SKybolt, many thanks again. These drawings are all seeing for the first time to me. Especially double decker is very impressive, seat miles per flight time may be very large. I also have Kentron SBJ's three view drawings which is little different from your post.

 

[KJ_Lesnick]

The Kentron/Langley SSBJ design looks like too much plane, too little cabin.

The cabin length is way too little for all that fuselage length

 

[Skybolt]

Actually it was an arrow wing SST reduced scale demonstrator disguised as an airplane with a practical "raison d'etre" to justify it from a political point of view. Remember that NASA had to change the name of the Supersonic Cruise Aircraft Research (SCAR) program dropping the "aircraft" to pass Congress opposition, since some powerful Congressmen suspected they were doing a new SST program disguised as a research program. For more in-depth info on this aircraft, you can refer to:
http://hdl.handle.net/2060/19860017806 and references therein (almost all still not available online, though).

 

[hesham]

Hi,

http://www.emse.fr/~leriche/MDOAFM/Summary_of_MDO_experience.pdf

 

[Skybolt]

Thanks Hesham, expecially for the references contained in the paper ...

 

[hesham]

Thank you my dear Skybolt,

http://aero-comlab.stanford.edu/Papers/juanjo.aiaa02-0144.pdf

 

[blackkite]

Hi all! NASA's S4T(scilent small supersonic transport). This plane has no horizontal tail stabilizer! The engine location is similar to Tu22 blinder.

 

[KJ_Lesnick]

I liked the Boeing Arrow wing concept. That was truly beautiful and elegant.

KJ

 

[blackkite]

Hi! Low Boom Configurations. Enjoy.
Source:NASA/CP-1999-209699 High-Speed Research:1994 Sonic Boom Workshop

 

[blackkite]

I found this Lockheed Mach4 SST design report from the NTRS. This report said that this design assumed no community noise or sonic boom constraints. But I think this design has good shape for low sonic boom. Specifications are as follows. Enjoy!
1.cruising speed : Mach4 at 75,000ft
2.range : 6,500n.m
3.passengers : 250
4.max taxi weight : 988,088 lb
5.L/D : 7.3@Mach4 , 13.7@subsonic
6.engine : advanced afterburning turbojet 111,000 lb each @sea level
Source:NASA Technical Memorandum 4223 Concept Development of a Mach4 High-Speed Civil Transport

 

[flateric]

Orionblamblam has found it about 10 years ago, it was in paper APR.
Interesting that derivative of this design inspired an artist who was inventing NASA logo.

 

[blackkite]

Oh! He did it. I love APR very much but I don't have the volume which report this design. Flateric, do you have any information about the engine of this plane?

 

[flateric]

To my sorrow, not...

 

[Sundog]

Actually, the Lockheed Martin design shown above looks like a derivative of a 1980's NASA design study, but I forgot the name of the woman who designed it at NASA; her's had six engines. Our senior aircraft design studies were based on the NASA High Speed Civil Transport (HSCT) study requirements and she was the representative from NASA that we had to give our presentations to for review.

 

[blackkite]

Yes I know there are many super ladies in NASA, Langley,GSFC,JPL,etc.

 

[hesham]

Hi,

SST with the engines suspended above the wing.
http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19800004742_1980004742.pdf

 

[blackkite]

Hi hesham! Engines over the wing is good shape for low sonic boom. NASA S4T,Gulfstream ssbj, Aerion ssbj,JAXA SSBJ and SST adopt this concept.

 

[blackkite]

Hi! Boeing's High Speed Civil Transport study in 1989.
Passengers : 250-300
Range : 5,000-6,500n.m.
Source : NASA Contract Report High Speed Civil Transport Study, Boeing Commercial Airplanes New Airplane Development

 

[blackkite]

Hi! Douglas HSCT study.
Passenger : 300
Cruising speed : mach 3.2 to mach 5
Range : 3,900n.m(mach5) to 6,500n.m(mach3.2)
Enjoy.
Source : (1)NASA Contractor Report 4235 Study of High-Speed Civil Transport. Douglas Aircraft
Company December 1989
(2)DOUGLAS AIRCRAFT HSCT STATUS & FUTURE RESEARCH NEED May 1991
http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19900004054_1990004054.pdf

 

[hesham]

Hi,

http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19860017806_1986017806.pdf

 

[hesham]

Hi,

http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19840019606_1984019606.pdf

 

[blackkite]

Hi! Lockheed/Langley Mach 2.4 HSCT study.It has trapezoidal panel wing and tailless configuration for low weight and high aerodynamic efficiency at cruise similar to British Aerospace AST, Aerospatiale ATSF and Tu-244.
1.Cruising speed : Mach2.4
2.Range : 6,500n.m
3.TOGW : 614,300lb
4.Engine : 4 advanced turbine bypass engine 39,000lb each
5.L/D : 9 @Mach 2.4
6.Passengers : 251
Enjoy.

http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20000013558_2000010539.pdf

 

[hesham]

Hi,

Vought AST-102 and AST-200,and some designs from 1963.


http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19790013875_1979013875.pdf
http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19700077971_1970077971.pdf

 

[flateric]

It's not 'Vought', it's their contract work on NASA-Langley Research Center AST
(Advanced Supersonic Technology) concepts, based on wind tunnel data obtained during the late 1960's for the NASA SCAT15F (evolved in AST-102) configuration. This is regarding first paper. Second is Langley in-house paper itself.

 

[hesham]

Hi,

http://www.flightglobal.com/pdfarchive/view/1998/1998%20-%203447.html

 

[blackkite]

Hi! Lockheed LH2 fuel SST design. Enjoy.
http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19760010013_1976010013.pdf