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I would like to have some information about the history of airbrakes.

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  • $\begingroup$ Guess that was in first world war. The stukas needed it for their dive. $\endgroup$ – Noah Krasser Oct 16 '17 at 18:22
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    $\begingroup$ @NoahKrasser: Stukas? First world war? I think you got your wars confused. $\endgroup$ – Fred Larson Oct 16 '17 at 18:33
  • $\begingroup$ i saw from discovery channel p38 lightning was crashing because it was so fast at diving, no other plane fast like it before, and engineers started to place some sort air spoilers to slow down plane at diving. and i guess no other planes that fast before even when diving because lack of good aerodynamics design induces high drag when diving. this is not answer but i guess it is answering, what is the first necessary airbrake? $\endgroup$ – hfc Oct 17 '17 at 9:21
  • $\begingroup$ by the way discovery channel states, engineers wasnt aware of air behavior over certain speed before. $\endgroup$ – hfc Oct 17 '17 at 9:27
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    $\begingroup$ @FredLarson Ah, sure, thanks! Of course second world war! Don't know why I wrote "first". $\endgroup$ – Noah Krasser Oct 18 '17 at 9:28
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enter image description here
(Flight magazine 1914)

I'll answer the title question, as the complete history is too broad. That would be the Avro Scout (model 511) of c. 1914. Only one was built. Yes, that suspiciously looks like flaps. Back then +100 years ago that invention was called an air brake, flaps are air brakes after all.

From Wikipedia:

Most unusually for its time, the inboard lower wing featured landing flaps air brakes, so the 511 landed at a sedate 35 mph (56 km/h).

This is what the plane looked like:

enter image description here

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  • $\begingroup$ Notice the streamlined covered wing struts, slick! $\endgroup$ – ymb1 Oct 18 '17 at 6:17

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