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Actually, a helicopter can fly upside down but not for long.If you go to... http://www.guardian.co.UK/notesandqueries/query/0,,-186989,00.htmlYou can get answer to why I say they can fly upside down. They can only fly upside down for a certain amount of time though.My reference is ^. I am NOT playgerizing.The reason is due to the design of the rotor blades and the grips that hold them and the mast. It is how the parts were designed to carry loads. Most Mast and Blade designs are build to carry a load UNDER it but it is not rigid enough to invert it so the load is above it.Most vintage Bell Helicotpers had teetering rotors and was limited to about 60 degree banks because the rotor blade would bang against the mast. In the 1980's they had some accidents involving "mast bumping" and they had to redesign the rotor system to include bumper pads or stiff springs to absorb the shock of the blade hitting the mast.However, most times that helicopters are flown upside-down they are flying such that the G-forces is still loading the rotor blades in the same direction. They can do a Loop or a Split-S and the momemtum of the helicopter keeps the rotor blades loaded in a positive force. They very seldom fly inverted in level flight so the load on the rotor is Negative.

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Why can planes fly upside down?

Planes can fly upside down because the wings are designed to generate lift in both upright and inverted positions. The shape of the wings and the angle at which they are tilted allow the plane to maintain stability and control even when flying upside down.


How can a plane fly upside down?

A plane can fly upside down by generating enough lift from its wings to counteract the force of gravity pulling it towards the ground. This requires precise control of the plane's speed, angle of attack, and other factors to maintain stability and control while inverted. Pilots use specialized training and techniques to safely fly a plane upside down.


How do planes fly upside down?

Planes can fly upside down by generating enough lift from their wings to counteract gravity. By adjusting the angle of the wings and using the engine power, pilots can maintain control and stability while flying inverted.


How can planes fly upside down?

Planes can fly upside down by generating enough lift from their wings to counteract the force of gravity pulling them towards the ground. This is achieved by adjusting the angle of the wings and using the engine power to maintain the necessary speed and control.


How does a plane fly upside down?

A plane can fly upside down by using its wings to generate lift in the opposite direction, allowing it to maintain altitude and control its flight path. Pilots adjust the plane's controls and angle of attack to maintain stability and control while flying inverted.