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
No, birds cannot stay completely still in the air while flying. They need to constantly flap their wings to maintain lift and stay airborne.
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
The blades impart a downward impulse to the air and produce a downward change in the momentum of the air. The air at the same time exerts an upward impulse on the blades, providing lift. (Newton's third law applies to impulses as well as forces.)
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.
Join the army or air force as a helicopter pilot.