No African American invented the helicopter. The first practical helicopter was invented by Igor Sikorski, a Russian American.
An engineer, Igor Sikorski, invented the helicopter.
William Painter invented the bottle cap, his patent was granted in 1892. He was American but not African-American.
Garrett Morgan
She invented the hair brush she was also a great African American who stood up and made a chance for other African American
Dewy Sanderson (African-American)
An African-American didn't invent the helicopter.
Igor Sikorski, a Russian born American, invented the first practical helicopter.
harriet Tubman
I am wondering where was helicopter invented?
Nobody invented the helicopter in 1918
no but it was improved by African American Sarah Boone
An engineer, Igor Sikorski, invented the helicopter.
William Painter invented the bottle cap, his patent was granted in 1892. He was American but not African-American.
Augustus Jackson, an African American (yeah I know an African american?)
Percy LeBaron Spencer - he was an American
holla
The development of the helicopter took place at many places simultaneously, and many helicopters flew before Paul E Williams was born. African-American Paul E Williams was involved in the development of the "first useful helicopter" in particular the Lockheed Model 186 (XH-51). However this helicopter was not produced until 1962. He invented improvements to helicopter design, he didn't invent the helicopter. See the related questions for links to his aircraft.