The spinning rotor lifts it. The rear rotor stabilises it.
A helicopter can stay in the air until it runs out of fule,oil etc. Or until the engine has some sort of failure ex. like it over heats.
The rotors provide lift to keep them up.
no NO PLANE CAN STAY IN AIR EXPECT HELICOPTER JUST BECAUSE OF HIS WINGS
Trial and error. There are many different ways to make a paper aeroplane - some may be better than others.
yes it can
When a helicopter is hovering (aka "still") it has the force of gravity pushing "down" toward the Earth and the force of "lift" of the spinning rotor blade(s) pushing against the surrounding air. When the gravitational force is equal to the force of lift the helicopter hovers on the vertical axis.
helicopter
An air ambulance helicopter is generally the same as an ordinary helicopter except for the fact that it is equipped to save lives just as a regular ambulance is equipped. Air ambulance helicopters must have the medical supplies necessary to save lives.
The helicopter blades push air down. By Newton's third law, the air pushes the helicopter upward.
Marine One for helicopter and Air Force One for aero
Join the army or air force as a helicopter pilot.
The Helicopter with the long propellers creates more list and has to do less rotations, and use less power than the one with short proplellers. Therefore Helicopter with the long propellers will hover and stay in air longer than the one with short propellers.