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Author Topic: P&W JTF17 (Proposed Boeing 2707 SST Engine)  (Read 8873 times)

Offline shockonlip

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P&W JTF17 (Proposed Boeing 2707 SST Engine)
« on: May 20, 2011, 11:49:52 am »
Since we can't unlock propulsion posts from aircraft prior aircraft
discussions, let me point at some in this new forum.

http://www.secretprojects.co.uk/forum/index.php/topic,1848.msg119827.html#msg119827
Above link discusses P&W JTF17 SST Duct Burning Turbofan.

The JTF17 became the foundation for future composite engine cycle work done later
by P&W, as the GE4 did for GE (I will post more later).
« Last Edit: December 15, 2018, 04:08:59 pm by flateric »

Online flateric

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Re: P&W JTF17 (Proposed Boeing 2707 SST Engine)
« Reply #1 on: May 13, 2013, 06:03:34 am »
...
"There are many disbelievers in
stealth, more than a few of them truly technically ignorant and proud of it." Sherm Mullin, Skunk Works

Online flateric

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Re: P&W JTF17 (Proposed Boeing 2707 SST Engine)
« Reply #2 on: May 13, 2013, 06:17:14 am »
DTIC seems to have many new(?) JTF17 documents uploaded, like these jewels


ENGINE PROPOSAL FOR PHASE 3 OF THE SUPERSONIC TRANSPORT DEVELOPMENT PROGRAM. VOLUME 3. TECHNICAL ENGINE. REPORT B. ENGINE DESIGN
http://www.dtic.mil/dtic/tr/fulltext/u2/378363.pdf
ENGINE PROPOSAL FOR PHASE III OF THE SUPERSONIC TRANSPORT DEVELOPMENT PROGRAM. VOLUME 3. TECHNICAL/ENGINE. REPORT D. INSTALLATION
http://www.dtic.mil/dtic/tr/fulltext/u2/378365.pdf

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

Offline elmayerle

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Re: P&W JTF17 (Proposed Boeing 2707 SST Engine)
« Reply #3 on: May 25, 2013, 12:43:27 am »
Once upon a time, many a year ago, there was an aviation museum near Kissimee, FL that had the Boeing SST mockup.  It also had a JTF17 engine.  I don't know what happened to the museum or the engine but 'twas fascinating to study the engine.

Offline George Allegrezza

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Re: P&W JTF17 (Proposed Boeing 2707 SST Engine)
« Reply #4 on: August 16, 2014, 09:49:20 am »
As Flateric noted earlier, DTIC has a wealth of information on both engines.  I have scanned a few of the reports, and I found it interesting that, among other things, the GE4 had better transonic acceleration, a larger window for growth in static thrust (43% IIRC), and produced less noise, than the JTF17.

Offline KJ_Lesnick

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Re: P&W JTF17 (Proposed Boeing 2707 SST Engine)
« Reply #5 on: September 09, 2014, 06:03:07 pm »
I'm surprised it's maximum g-limits are so low: I'm guessing some inlet guide vanes would fix that?

Offline George Allegrezza

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Re: P&W JTF17 (Proposed Boeing 2707 SST Engine)
« Reply #6 on: August 16, 2016, 11:57:42 am »
Nice comparison pic of J58 and JTF17 in a United Aircraft ad in Aviation Week, 9/19/66 (login may be required):

http://archive.aviationweek.com/issue/19660919#!&pid=102

Offline George Allegrezza

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Re: P&W JTF17 (Proposed Boeing 2707 SST Engine)
« Reply #7 on: September 23, 2016, 08:32:14 am »
Very interesting Boeing report comparing the GE4 and the JTF17:

http://www.dtic.mil/dtic/tr/fulltext/u2/378498.pdf

Offline sferrin

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Re: P&W JTF17 (Proposed Boeing 2707 SST Engine)
« Reply #8 on: September 23, 2016, 09:32:06 am »
Great finds!
"DARPA Hard"  It ain't what it use to be.

Offline George Allegrezza

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Re: P&W JTF17 (Proposed Boeing 2707 SST Engine)
« Reply #9 on: September 23, 2016, 06:38:59 pm »
No sweat -- found while looking for something else, naturally.

DTIC is the go-to site for SST engine info.

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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

Online flateric

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« Last Edit: December 15, 2018, 04:05:41 pm 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