The word was coined towards the end of the 19th century, so no.
Leonardo da Vinci drew a helicopter about 500 years ago
Nearly 12,000 US helicopters & approximately 40,000 US helicopter pilots served in the Vietnam War. Over 5,000 US helicopters were destroyed and nearly 5,000 US helicopter crewmen were killed in Vietnam. Of those 5000 dead crewmen, about 2,000 were helicopter pilots.
Helicopter design has changed every year. New components are used and new materials appear
Bigger, faster, capable of lifting greater weights and capable of flying at higher altitudes.they areused for bobingghjkshbnfvdshfourd
The reconstruction
No They wouldn't have.
no
no
No
Brian Helicopter is 53 years old (birthdate: June 27, 1958).
Leonardo da Vinci drew a helicopter about 500 years ago
It was 36 years between the first airplane flight and the first helicopter flight. The Wrights flew in 1903, Sikorsky flew his first helicopter in 1939.
The last answer was answered by me.
They have been around for 70 years
Someone was 49 years old in any year of your choice.
yes
They already know!