Helicopters generally can't fly above 25,000 feet due to a combination of factors, including decreased air density, which affects lift and engine performance. At higher altitudes, the reduced oxygen levels can impair engine function and limit the pilot's ability to breathe without supplemental oxygen. Additionally, rotor efficiency diminishes in thin air, making it challenging for helicopters to maintain stable flight and perform maneuvers effectively.
Helicopters can fly directly up or down.
Because the air gets too thin.
Because rotors are noisy and helicopters isually fly close to ground
They fly helicopters.
Most helicopters fly with only one rotor. If you mean one blade, that is because it would be unbalanced.
Less than an hour. Now some can fly over 6 hours
hah lol that's not true. penguins belly flop down snow hills all the time and are able to get back up. that's funny ;)
You can fly helicopters.
They fly in California.
There are many different helicopters. Most small civilian helicopters may fly for about an hour, but large passenger or military helicopters can fly for 6 hours or more.
No
so we can fly