It looks like you're using an Ad Blocker.
Please white-list or disable AboveTopSecret.com in your ad-blocking tool.
Some features of ATS will be disabled while you continue to use an ad-blocker.
Originally posted by waynos
The F-110 wasn't a development of the F-4 Phantom, it was just the USAF designation for those F-4's which it bought. In 1962 the new tri service designation system was introduced and 'F-110' was dropped and all Phantoms were just F-4's.
If you want to take the roots of the F-111 right back to the very beginning look into the Vickers 583 VG strike fighter project from 1958. This was also meant to produce a strike aircraft for the RAF and a carrier based interceptor for the RN just like the original TFX (from which F-111 was born) was supposed to do for the USA. This has almost no physical commonality with the F-111 but was the source of much tech transfer from Vickers to NASA who later assisted on the F-111 and thus it can be said to be directly relevant.