Science, asked by tapankumar1482, 6 months ago

who proposed the helicopter model

Answers

Answered by praseethanerthethil
7

Answer:

l think, Sikorsky proposed the helicopter model

hope it helps

Answered by brainlyfriend91
3

Answer:

Sikorsky

SikorskyOn June 27, 1931, Sikorsky submitted a patent application (no. 1,994,488) for a direct lift aircraft, which included all the major engineering features of the VS-300. The patent was granted on March 19, 1935.

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