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As for the rather lovely Whirlwind it was ny most accounts RRs refusal to countenance any further development, support or production of the (equally lovely) Peregrine that was the major driver for cancellation. Read Lord Hives' biography.
...it had to be Merlin Merlin Merlin 'at that time'
I'm not pretending that they did, but they did have a LOT more information to base their decisions on than we have today.
According to the RAF a Hurricane II with Merlin XX had a top speed of 340 mph at 21,000 feet.
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I wonder why that would be?
Could it have been because the Battle of Britain was being fought, or about to be fought, with hundreds of aircraft that were powered by Merlins, which could benefit from any.
A few thoughts.
The Lysander, while an interesting aircraft was an out of date concept and disaster as a warplane. It was pretty much useless in it's original intended roles. It did see a bit of use in very small numbers in minor areas or for short periods of time.
The whole idea of FAA P-40 is ridiculous, the British may have done some bone headed things (so did everyone) but trying to use P-40s off carriers was not one of them. Just look in a P-40 manual for the take-off and landing distances and/or approach speeds. P-40s did take off from carrier decks but it was usually with little or no ammo and just enough fuel to reach the shore base they were being ferried to. That is a lot different than being an actual operational carrier fighter.
Heck, they even flew P-47s off carriers on a few occasions, sure doesn't mean the P-47 had any potential as a carrier fighter.
The Defiant is another over rated or hyped airplane. An awful lot of it's reputation is based off of wartime propaganda and/or wishful thinking. Or very selective time frames. the Defiant may have shot down about 1/4 of the German bombers during the night Blitz. Now how many other fighters flew missions at night and how many scored any victories? Divide up the number of victories by the number of different types of fighters that flew night missions and the Defiant might come out on top, however that total number is skewed. British night fighters as a whole shot down more German bombers in April and the first two weeks of May than they had shot down from Sept of 1940 to the end of March 1941. No service Defiant carried radar until the fall of 1941. Most of it's other roles could have been performed by any other airframe that was handy.
The Battle gets a bit of a bum rap. Nobody had a bomber that would have done much better in France in 1940 flying in penny packets and for the most part unescorted. However, it's true contribution to the British war effort was the training of thousands (if not tens of thousands) of bomber crewmen. If you don't build the Battle you need to build some other bomber crew trainer. Battles could also have performed some of the roles that Defiants or even Lysanders did. if they were not available.
Lysander against Fiat CR32s? Ee, luxury. If you were in the East Africa campaign with use of Furys, Hartebeest/Hardys, Gauntlets, Vincents and even a Valentia.They were actually fighting Italian aircraft with Lysanders in the early days in North Africa., and also using them as (very) light bombers. Didn't do all that well though not terrible either- some of the early Italian planes were pretty durfy too. But you wouldn't want to be in a Lysander that got jumped by a CR 32 let alone a CR 42.
The RCAF used the Lysander for coastal patrol and as an emergency fighter.Lysander against Fiat CR32s? Ee, luxury. If you were in the East Africa campaign with use of Furys, Hartebeest/Hardys, Gauntlets, Vincents and even a Valentia.
The Battle gets a bit of a bum rap.
The Bristol Blenheim.When introduced into service in mid 1937 it was of pretty cutting edge construction with performance superior to equivalent aircraft and there were not many fighters in service that were faster. By mid 1939 it was an obsolete flying coffin, fighter aircraft in service had gained 60mph and doubled weight of armament. I wonder if there are many aircraft that had such a short time at the top outside of a war
The Bristol Blenheim.
I haven't found why there was such a leaning towards the Beaufighter, and it didn't last long into the war; as time goes on, interest gradually turns back to continuing Spitfire production, with extra orders finally being placed.
The backtracking started 17-11-39; an order for a further 500 was proposed 8-12-40, and 450 agreed 11-1-40. 22-3-40 it was increased to 900.
There is no other plane in the Blitz that can sneak up underneath a German bomber, certainly not the Battle. It's a two seater and so has two sets of eyes. As for the Lysander for artillery spotting being a failure, correct but whatever you use will be shot out of the skies without adequate fighter cover.
With 4 x 20mm cannon concentrated in the nose, plus .303 wing guns, a Beaufighter, if it could catch one, could presumably obliterate any WW2 bomber very quickly and a high rate per interception, compared to .303 mg armed fighters.
Because, simply, you cannot mass produce a lot of varieties engines, variety is the opposite of mass production.I wonder why that would be?
Could it have been because the Battle of Britain was being fought, or about to be fought, with hundreds of aircraft that were powered by Merlins, which could benefit from any extra performance that Rolls-Royce could coax out of it.
Remember also that development was paused in 1940 before being cancelled in 1941. It was the same for the Vulture and Exe.
Griffon and Crecy development was paused in 1940 as well, but resumed later, despite Hives wanting to stop work on the Crecy.
This is true but as shown by Fubar57, it was due to a lack of anything else, not any intrinsic quality of the Lysander. Flight reports on the Lysander say that while it can perform rather tight maneuvers, (even Hurricanes can't follow it in a turn) it had heavy controls and slow response. It also had just about the same wing area as a Hurricane and weighed just about as much as a MK I Hurricane.The RCAF used the Lysander for coastal patrol and as an emergency fighter.
A number of aircraft were pressed into use as "emergency" fighters (or other roles) but almost always it was because there was nothing else at at all, not because they were 2nd best.
Big difference between 2nd best out of many and nothing at all.
Having just read Bloody Shambles, which I highly recommend, in order to operate the Whirlwind in Malaya the airfields need to be lengthened and perhaps hard surfaced. Get that sorted and the Whirlwind will do well against the IJAAF's Nakajima Ki-43 and decimate everything with two engines. Having just returned from KL and Singapore (visited the Welcome to the Battlebox and Fort Siloso: Front Page ) I can attest that the air is dense and humid, so I imagine the Whirlwind will do better at altitude in Malaya than it could over northern Europe. In my mind, here's the Whirlwind at RAF Selatar.
Whirlwind's issue will be ammunition, since with only 60 rounds per gun, you'd better shoot sparingly and with utmost accuracy. Would under wing .303 mg pods be a quick add-on? Like on this Potez POTEZ 63/11
IMO, he's not asking you because he wants to know, but instead wants to shut you down.
Is there an Ignore function here? EDIT, yes there is. Bonus.