Comments by "John Burns" (@johnburns4017) on "Curious Droid"
channel.
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@TroubleShooter1337
Supercharging is as old as the internal combustion engine. The British took supercharging to another level. After Stanley Hooker, a pilot just took his plane anywhere in the sky, with all flaps, supercharging speeds, etc, all done automatically. Before, a pilot had to open air flaps at various heights, etc. A massive difference. Hooker put another 15,000 feet and 70mph on the Merlin 61.
The first time FW-190s met the Spitfire Mk 9, with the Hooker supercharging, they were salaughtered.
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Mocsk
War Production:
• Germany was third behind the USA, then the
UK in GDP, in 1939.
• Germany = UK in capital goods production in 1939.
• UK economy grows 60% during WW2.
• Hitler says to Guderian, re: USSR, "had I known they
had so many tanks as that, I would have thought
twice before invading"
- World War Two, chapter War Production by Keegan.
"Combined GDP of the UK and France exceeded Germany & Italy by 60%."
- Wages of Destruction by Prof Adam Tooze, Preface, xxiii:
"It was poor because of the incomplete industrial and economic development of Germany".
- Wages of Destruction by Prof Adam Tooze, page 454.
"Soviet exceeded German GDP in 1940"
"The Allies won the war because their economies supported a greater volume of war production and military personnel in larger numbers. This was true of the war as a whole, and it was also true on the eastern front where the Soviet economy, of a similar size to Germany's but less developed and also seriously weakened by invasion, supplied more soldiers and weapons."
"the technological key to Soviet superiority in the output of weapons was mass production. At the outbreak of war Soviet industry as a whole was not larger and not more productive than German industry. The non-industrial resources on which Soviet industry could draw were larger than Germany's in the sense of territory and population, but of considerably lower quality, more far-flung, and less well integrated. Both countries had given considerable thought to industrial mobilisation preparations, but the results were of questionable efficacy. In both countries war production was poorly organised at first and productivity in the military-industrial sector had been falling for several years. The most important difference was that Soviet industry had made real strides towards mass production, while German industry was still locked into an artisan mode of production that placed a premium on quality and assortment rather than quantity. Soviet industry produced fewer models of each type of weapon, and subjected them to less modification, but produced them in far larger quantities. Thus the Soviet Union was able to make considerably more effective use of its limited industrial resources than Germany.
"Before the war Soviet defence industry was in a state of permanent technological reorganisation as new models of aircraft, tanks, and other weapons were introduced and old ones phased out at dizzying rate."
http://www2.warwick.ac.uk/fac/soc/economics/research/workingpapers/publications/twerp603.pdf
The USSR had access to oil, more natural resources, and far more men. Giving them the ability to produce far greater than Germany, which actually happened.
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...Continued... Rolls Royce. Rolls engineers under Ron Harker went to North American to advise on how to install a Merlin engine in the Mustang. They also gave advice from their work with the RR Mustang X. Rolls-Royce made the first proposal to North American regarding a Merlin 45 engine Mustang in 1940, after Stanley Hooker improved the power by 30%. This was before the plane was operational an still in the R&D stage. The RR Merlin was superior to the Alison engine, also to what it was in February 1940 when North American were first approached by the Air Ministry. The later Merlin 61 had the two-stage auto controlled superchanging developed by again by Stanley Hooker. This gave an extra 70 mph and 15,000 feet of operation to the Merlin. A quantum leap. The pilot just went where he liked without degradation in performance.
RR sent three engineers led by James Ellor to supervise the adaption and manufacture of a Merlin 61, built under licence by Packard, the same type that was already being considered for the Rolls Royce Mustang X experimental series. https://en.wikipedia.org/wiki/Rolls-Royce_Mustang_Mk.X
On 9 June 1942, the first memos from W/C I.R. Campell-Orde of the RAF Air Fighting Development Unit at Duxford, revealed that an effort was being made to convince North American to adopt a Merlin-powered Mustang. Work in the US was setback due to an initial lack of interest and also to mechanical failures of the first Merlin engines built under licence by Packard. Both projects commenced at nearly the same time with the first Mustang X in the air about a month earlier than the North American XP-51B.
The RR Mustang-X programme was 5 or 6 airframes each with different experimentation. RR attempted to have North American accept British Merlin 61s (the two-stage superchargers) in American airframes, it is clear that the prime contractor (NAA) wanted to control the project as control was looking like it was to move over to the UK. NAA was essentially building production-standard aircraft rather than the experimental series that saw each of the RR Mustang Xs trying out new variations of design. An offshoot was the mid-engine RR Griffon engined Mustang that actually made it to the mock-up stage, albeit with a Merlin installed amidships. On the success of the RR Mustang-X built in Nottingham, the Air Ministry ordered hundreds from RR, who declined wanting to remain specialising in engines. NAA remained the prime contractor.
Rolls Royce mass produced Merlins in Crewe, Manchester and Glasgow, also licensing Packard in the USA, using idle US industry. The US made Merlins were to supply the Canadian aircraft factories - to avoid a two-way trans-Atlantic trip and give extra manufacturing when the engine proved very popular with many airframe makers. An agreement was reached in September 1940, with the first Packard built Merlin engine running in August 1941.
Early in 1944 the P-38, P-51B Mustang and P-47C, were dived by the British for compressibility testing at the RAE Farnborough, England at the request of the USAAF. They had trouble when these planes dived onto attacking German fighters when providing top cover for the bombers. The results were that the Mach numbers, the manoeuvring limits, were Mach 0.68 for the P-38, Mach 0.71 for the P-47, and Mach 0.78 for the Mustang. The corresponding figures for the FW-190 and Me109 was Mach 0.75. The tests resulted in the Mustang being chosen for all escort duties. - Page 70, Wings On My Sleeve by Eric Brown, who did the test.
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