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Author Topic: The Republic F-105H Thunderchief design proposal  (Read 5700 times)

Offline Pioneer

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The Republic F-105H Thunderchief design proposal
« on: November 30, 2006, 09:55:37 pm »
I found this on another Forum sight

In late 1962 or early 1963, Republic proposed the F-105H, with a new wing of 448 square feet, two seats, new landing gear, vertical fin, stabilator, new nose, etc. This was really a new design, and the USAF did not go for it.

They are looking for pictures or drawings of this proposed upgrade of the Thunderchief

Can you help?

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Pioneer
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Mans nobility, made transcendent in the fiery crucible of war.
Faithfulness and fortitude.
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Offline Skybolt

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Re: The Republic F-105H Thunderchief design proposal
« Reply #1 on: December 03, 2006, 11:13:14 am »
In a Korean (  :o ) site I found only the following: the machine was a 1962 development of the F-105F with a new engine ( JT4B-24 ) . The site mentioned another project, the AP.63-19, that seems was a version proposed to Canada, France and UK as a standard heavy NATO fighter-bomber.

Offline sferrin

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Re: The Republic F-105H Thunderchief design proposal
« Reply #2 on: December 03, 2006, 03:32:10 pm »
In a Korean (  :o ) site I found only the following: the machine was a 1962 development of the F-105F with a new engine ( JT4B-24 ) . The site mentioned another project, the AP.63-19, that seems was a version proposed to Canada, France and UK as a standard heavy NATO fighter-bomber.

Wasn't the JT4 the J58?  Seems I've read of version of the F-106 (F-106X I believe), and the Crusader III also were considered for the J58.  And of course the Hustler.

(Nevermind.  Just checked it out and it's the J-75.  Anybody know anything about the JT4B-24 varient?  The article on the XF8U-3 Crusader III in an issue of Classic Wings mentions a couple versions, one at about 29,500lbs thrust and another at ~28,000lbs but doesn't give the designations.  In fact IIRC at least one of the three prototypes were powered by the 29k version.)
« Last Edit: December 03, 2006, 07:10:43 pm by sferrin »
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Offline Sentinel Chicken

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Re: The Republic F-105H Thunderchief design proposal
« Reply #3 on: December 03, 2006, 05:19:27 pm »
In a Korean (  :o ) site I found only the following: the machine was a 1962 development of the F-105F with a new engine ( JT4B-24 ) . The site mentioned another project, the AP.63-19, that seems was a version proposed to Canada, France and UK as a standard heavy NATO fighter-bomber.


Wasn't the JT4 the J58?  Seems I've read of version of the F-106 (F-106X I believe), and the Crusader III also were considered for the J58.  And of course the Hustler.

I think the JT4 is the civilian designation for the J75......I think there were PW plans for a turbofan version of the JT4, but it would have overlapped with their work they'd already done on the JT8D.
« Last Edit: December 04, 2006, 07:12:57 am by Sentinel Chicken »

Offline SOC

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Re: The Republic F-105H Thunderchief design proposal
« Reply #4 on: December 04, 2006, 12:44:54 am »
Pretty sure the J-58 was JT11.  I recall seeing the designation JT11D-2 associated with the Blackbird program before.

Offline Skybolt

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Re: The Republic F-105H Thunderchief design proposal
« Reply #5 on: December 04, 2006, 02:42:22 am »
Uh, forgot, the Korean site (in Korean, so I use a translation via Babelfish...) says that the engine of the F-105H was rated at 30.000 lbs.

Offline elmayerle

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Re: The Republic F-105H Thunderchief design proposal
« Reply #6 on: December 05, 2006, 01:29:53 pm »
Pretty sure the J-58 was JT11.  I recall seeing the designation JT11D-2 associated with the Blackbird program before.

J-58 as fitted to the Blackbird family was, I believe, the JT11B-20.  P&W internal designations of that period had the "D" after the model number as a designator of a turbofan.  For instance, JT3B was the J75 while JT3D was the TF33 or the JT8B became the J52 but with a rework to the l-p compressor to make it a fan, you get the JT8D, originally done for a somewhat paniced Boeing on the original 727 when RR's intransignance almost killed the program.