Talk:Pratt & Whitney J57

Naming
Should I keep the article under the Pratt & Whitney designation of JT3C, or would it be better to move it to the USAF designation of J57 (and similarly for JT4A/J75 and JT3D/TF33)? GCarty 19:13, 14 July 2005 (UTC)


 * Keep here, redirect others, use piped link to include both in listings such as that at Pratt and Whitney. Gene Nygaard 19:42, 14 July 2005 (UTC)


 * Could we change the page title to J57/JT3C though?

First 10k Engine?
Anyone have a source for this claim? The Sapphire and Avon were running around the same point in time, the Sapphire in '49 IIRC. Maury 14:50, 27 November 2005 (UTC)


 * Good question. This claim came from the USAF musem website IIRC. Collier Trophy sites do not give the specifics of the achievement. I'll change it to first US engine in the 10k class. Good catch! Emt147 19:09, 27 November 2005 (UTC)


 * According to Bill Gunston, the Bristol Olympus BE.10 although designed for 9,140 lb st/t, gave 10,000 lb on it's first run on 16th May 1950. — Preceding unsigned comment added by 2.24.215.129 (talk) 21:15, 24 September 2014 (UTC)

XT45/XT57
The XT45 evolved into the J57, the XT57 evolved into the J75 AVKent882 (talk) 01:40, 16 April 2010 (UTC)


 * Reliable sources? Anyway, since the T57 is a derivative of the J57, does it really make much difference which exact model the J75 is descended from, since both are covered on this page? (Assuming you're correct.) - BilCat (talk) 04:11, 16 April 2010 (UTC)


 * According to The Engines of Pratt & Whitney: A Technical History by Jack Connors, pp. 293-294, development of the J75 began in early 1952, while that of the T57 began in early 1953. - BilCat (talk) 06:04, 2 February 2011 (UTC)

Can we say more on the design and development
Was it the first jet engine to use titanium for significant parts ? Was it just for the compressor blades ? - Rod57 (talk) 11:44, 10 March 2018 (UTC)


 * The rapid development of the titanium industry in the US was primarily due to J57 program. Melting, sheet-rolling and forging practices were initiated with J57 program. It was used for (first engine shipped in 1954) J57 inlet case, LPC case, LPC rotor blades, disks and disk spacers.Pieter1963 (talk) 03:29, 24 August 2023 (UTC)