# What provides lift for an airplane in flight?

## What provides lift for an airplane in flight?

Lift is generated by every part of the aircraft, but most of a normal airliner’s lift is generated by the wings. Lift is a mechanical aerodynamic force produced by the motion of the aircraft through the air.

## What makes an airplane take off?

Lift (upward force) and thrust (forward thrust, provided by a propeller) make an aircraft take off. Gravity and drag (air resistance, which is the friction caused by the air rubbing against the aircraft) attempt to pull the aircraft down and slow its speed. The lift of the wings is used to overcome the force of gravity.

What explains the lift of aircraft?

The pressure difference between the high pressure air below the wing and the low pressure air above the wing causes lift. It is designed to offer the best compromise between lift and drag for each aircraft. On many aircraft, the bottom of the wing curves slightly downward instead of being flat.

Can an airliner stop mid-air?

Can a plane stay still in the air? Technically, it is possible for an aircraft to hover for a few moments, but only in very rare circumstances. If weight and lift cancel at the exact same time that thrust and drag cancel, the aircraft will hover until one of those variables changes.

How long can a plane stay in the air?

Planes can now fly for 21 hours non-stop.

What causes lift in an airplane wing?

This movement of air (up and over the wing) is called upwash. The upwash limits the random movement of air, causing the molecules to flow in a relatively simplified way and thus accelerating it. As explained earlier, the high speed movement of air causes its static pressure to decrease on the wing of the aircraft.

#### How does turbulence affect an aircraft’s lift and drag?

The increase in turbulence causes the rapid deterioration of the lift force while greatly increasing the drag, resulting in a stall. The adjacent graph shows the lift and drag at different angles of attack experienced by a Clark Y airfoil, a type widely used in general purpose aircraft design.

#### How are drag and lift related to flight?

Just as drag holds something back in response to wind, lift pushes something up. Air pressure is highest on the underside of a wing, so it is pushed up.

How does airflow generate lift?

The flow is turned in one direction and the lift is generated in the opposite direction, according to Newton’s third law of action and reaction. Because air is a gas and molecules are free to move, any solid surface can deflect a flow. For an aircraft wing, the top and bottom surfaces contribute to the rotation of the flow.