CLEARANCE: Top Secret
- May 6, 2007
- Reaction score
They did do some high-aspect ratio designs, including a design study for a single-engine, high-altitude fighter with a high-altitude Merlin 60 engine and twin 20mm cannon, the M23A (not to be confused with the original M23 which had the traditional short, thick Miles wings).Thank you for the reply, so basically none of the Miles single seat fighters were going to be great altitude performers.
Not unlike a Spitfire, but meant as a purpose-built, specialized fighter to outperform the extended-wing high-altitude model of the Spitfire (still Merlin-engined at that point in the war) on the same Merlin 60 variant engine.sealordlawrence said:Mole, whilst I meant to type Martin-Baker (yes, I failed), that looks disturbingly like a big wing late model griffon Spitfire!
Well lets not forget that Rolls Royce kept managing to squeeze ever more power out of the Merlin, I know the Merlin 130/131 got to 2,060 hp and I understand that RR bench tested higher HP's? For some reason I remember 2,300hp in that context.Mole said:Not unlike a Spitfire, but meant as a purpose-built, specialized fighter to outperform the extended-wing high-altitude model of the Spitfire (still Merlin-engined at that point in the war) on the same Merlin 60 variant engine.
However I have no idea which supercharger the Sabre VIII had or whether it was geared for a contra-prop..?Sabre VIII: Intended for the Hawker Fury. Nearly 4,000hp on test.
I think that was me, with the information coming from Setright, L. J. K.: The Power to Fly: The Development of the Piston Engine in Aviation. I seem to remember he'd sourced it from Napier documents. 45lb boost and increased rpm instead of the wartime 13lb and 3800rpm gives quite some scope for improvement in power. From memory, the main issue run into was dissipating all the heat generated.sealordlawrence said:Whoever edited the wikipedia article on the Sabre has late model prototypes making 5,500hp with boost though unhelpfully that claim is not referenced.