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There s nothing 'pesky' in the leading edge slats on the Bf 109, or other aircraft that used it. The drooped LE is a fine solution, though it appeared some 30-40 years after the ww2. The Fowler flaps were a known thing before ww2, for example. But, for a light weight DB 601 powered naval aircraft they might not be needed at all.
The motorkannone is a good thing, problem that Germans have had was that MG FF jammed until fixes were implemented by late 1940 (too late for BoB).
Laminar flow wing test data for German air industry - from whom in second half of 1930s?
From an earlier discussion on how Germany might develop an earlier supplement to the Bf109.
The question is the last part?
Could laminar flow data be obtained in Germany at the time and how much difference would/could it do?
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