first civil helicopter service introduced in
Answers
Answered by
12
Answer:
On September 14, 1939, the VS-300, the world's first practical helicopter, took flight at Stratford, Connecticut. Designed by Igor Sikorsky and built by the Vought-Sikorsky Aircraft Division of the United Aircraft Corporation, the helicopter was the first to incorporate a single main rotor and tail rotor design.
Answered by
3
Answer:
your answer is in the above pic....
Explanation:
please mark as brainliest answer...☺️
Attachments:
Similar questions