Talk:Operational Requirement F.155

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I am curious about several parts of this this statement:

The English Electric Lightning for point defence was nearing completion of development.

Was it not the case that the Lightning was considered as an outright replacement for the Javelin? IE, was there always a plan to introduce the SR.177 beside the Lightning, or was this a plan that developed while the various plans were under design?

The Saunders-Roe SR.177 mixed-power was planned to enter service in a few years and cover the interim period.

Which interim? Between the Javelin and F.155?

The Canadian Avro Arrow was a possible contender to cover the interim but its capability was for an intruder at 50,000 ft travelling a Mach 0.9.

The Arrow was certainly more capable than that, with supercruise of M1.5 at 50kft and ceilings considerable higher. This statement seems rather suspect. From all the documents I can find (on the web), it was pretty much a direct match for the F.155 in overall performance and range. Does anyone have more detail?

Maury 21:51, 7 December 2006 (UTC)

British Secret Projects: Jet Fighters Since 1950 by Tony Buttler. I should have added it as a reference. Will do so now and be more explicit on SR.177. GraemeLeggett 09:56, 8 December 2006 (UTC)

Would you mind copying in some of the text on the Arrow? Like I said, these numbers appear incorrect. My question is whether this is a case of deliberate underestimation in order to make the British designs look better in comparison (as happened with the Arrow, they "tuned" the requirements to make sure Avro won), or they knew something everyone else didn't. Maury 12:58, 8 December 2006 (UTC)

The Derek Wood book, Project Cancelled also deals with the SR.177 proposals. Do you know it? Bzuk 13:02, 8 December 2006 (UTC)