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Author Topic: US Pratt & Whitney/Curtiss-Wright SST Engines  (Read 11329 times)

Offline Delta Force

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US Pratt & Whitney/Curtiss-Wright SST Engines
« on: October 12, 2013, 03:09:04 pm »
I've been trying to find information (specifications and possibly images) on the Pratt & Whitney JTF-17A and the Curtiss-Wright design submitted for the US SST program in the 1960s. While there is a wealth of information on the GE4, I haven't been able to find much on these other engine designs searching here or on the wider internet. I haven't even been able to find out the designation for the Curtiss-Wright submission. I'm not even sure if the Curtiss-Wright design was a turbojet/turbofan, I've seen some indications that it may have involved ramjet technologies (perhaps a J58 type hybrid design).

Offline blackkite

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« Last Edit: October 12, 2013, 03:38:47 pm by blackkite »

Offline George Allegrezza

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Re: US Pratt & Whitney/Curtiss-Wright SST Engines
« Reply #2 on: October 12, 2013, 03:37:17 pm »
DTIC has quite a bit of info on the JTF17, mostly the contractor reports.

Suggest this topic be moved to Propulsion.

Offline blackkite

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« Last Edit: October 12, 2013, 10:59:19 pm by blackkite »


Offline blackkite

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Re: US Pratt & Whitney/Curtiss-Wright SST Engines
« Reply #5 on: October 13, 2013, 12:18:02 am »
Mighty TJ-60 engine?
TJ-60 engine → TJ-70 engine?
« Last Edit: October 13, 2013, 12:53:18 am by blackkite »

Offline Delta Force

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Re: US Pratt & Whitney/Curtiss-Wright SST Engines
« Reply #6 on: October 13, 2013, 01:28:43 am »
Thanks for the excellent resources and quick responses. Where do you guys manage to find all of these resources?

Also, why is the JTF-17 diagram marked confidential? Was that a confidential corporate document or was the SST engine program at one point under US national security secrecy regulations? To some extent that would make sense due to the advanced propulsion technologies involved, but America's SST was going to be exported to NAM and even Soviet aligned nations such as Algeria and India. Why would an early document for a publicly funded commercial aircraft propulsion system be under security regulation?

Offline blackkite

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Re: US Pratt & Whitney/Curtiss-Wright SST Engines
« Reply #7 on: October 13, 2013, 04:20:53 am »
Thanks for the excellent resources and quick responses. Where do you guys manage to find all of these resources?

Also, why is the JTF-17 diagram marked confidential? Was that a confidential corporate document or was the SST engine program at one point under US national security secrecy regulations? To some extent that would make sense due to the advanced propulsion technologies involved, but America's SST was going to be exported to NAM and even Soviet aligned nations such as Algeria and India. Why would an early document for a publicly funded commercial aircraft propulsion system be under security regulation?
Hi! I can't answer your questions exactly.
All my resources are this high class SPF member's posts(mainly Shockonlip's and skybolt's post) and internet sites.(Google)
I want to see Curtiss Wright TJ-60 and TJ-70's cross section drawings.
Any way, FAA, Lockheed and Boeing knows everything and still keep every documents now. ;)
« Last Edit: October 13, 2013, 03:02:59 pm by blackkite »

Offline blackkite

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« Last Edit: October 17, 2013, 04:53:02 am by blackkite »

Offline blackkite

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Offline blackkite

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Re: US Pratt & Whitney/Curtiss-Wright SST Engines
« Reply #10 on: October 27, 2013, 02:23:01 am »
In 1962, the company received a Federal Aviation Agency (FAA) contract to  study compressor, turbine, and computer technologies for supersonic transport  jet engines and began competing for a major government contract to develop and  produce a supersonic commercial airliner engine. During the mid-1960s, the  company sold its electronic fittings and components division at a time when it  was plowing about $15 million of its own funds into the development of a  supersonic transport plane engine.
Curtiss-Wright lost its bid to produce the supersonic engine, and, by 1967,  the company had abandoned Berner's goal to build complete aircraft engines,  opting to become a first-tier supplier, or subcontractor, for other companies  involved in aerospace and other fields.

http://www.referenceforbusiness.com/history2/11/Curtiss-Wright-Corporation.html
 
And
http://www.abebooks.com/TJ60-Lightweight-Flexible-Turbojet-Supersonic-Transport/6116090059/bd
« Last Edit: October 27, 2013, 02:27:01 am by blackkite »


Offline blackkite

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Re: US Pratt & Whitney/Curtiss-Wright SST Engines
« Reply #12 on: November 04, 2013, 01:01:49 am »
Hi! I imagine that TJ70 engine had a almost same cross section shape of TJ60 engine.
« Last Edit: November 04, 2013, 04:21:45 am by blackkite »

Offline blackkite

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Re: US Pratt & Whitney/Curtiss-Wright SST Engines
« Reply #13 on: November 04, 2013, 02:58:50 am »
Key technology of this engine was variable area turbine nozzle.
Is this technology same as variable angle of attack turbine inlet stator?
« Last Edit: November 04, 2013, 03:05:38 am by blackkite »

Offline blackkite

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Re: US Pratt & Whitney/Curtiss-Wright SST Engines
« Reply #14 on: November 04, 2013, 04:58:04 am »
Hi! From "High speed dreams"