## What keeps a plane in the air?

Four forces keep an airplane in the sky. They are lift, weight, thrust and drag. Thrust is the force that moves the airplane forward. Engines give thrust to airplanes.

## How do airplanes stay still in the air?

Techincally, there is only one way for the aircraft to remain hanging motionless in the air: if weight and lift cancel each other out perfectly, and at the same time thrust and drag cancel each other out too. To stay in the air and sustain its flight, an aircraft needs to be moving forward.

How fast does a plane fly?

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around 460-575 mph
Most commercial aircraft typically fly at around 460-575 mph, or 740-930 km/h, according to Flight Deck Friend. But private jet speed can vary depending on a variety of factors, such as the weight onboard and the weather conditions.

### How do planes go so fast?

A jet engine essentially has a series of small blades rotating at a very high speed inside the engine. Drag is a force that all planes feel. By having a plane with engines that produce a large amount of thrust, and designing it to be streamlined, an airplane can travel very quickly.

### What are the four things an airplane needs to fly?

These same four forces help an airplane fly. The four forces are lift, thrust, drag, and weight . As a Frisbee flies through the air, lift holds it up.

What are four things make an airplane fly?

Educator Features Thrust is a force that moves an aircraft in the direction of the motion. It is created with a propeller, jet engine, or rocket. Drag is the force that acts opposite to the direction of motion. It tends to slow an object. Weight is the force caused by gravity. Lift is the force that holds an airplane in the air.

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#### How is it that an airplane is able to fly?

Airplanes fly because they are able to generate a force called Lift which normally moves the airplane upward. Lift is generated by the forward motion of the airplane through the air. This motion is produced by the Thrust of the engine (s).

#### How low are airplanes allowed to fly?

Unless otherwise permitted, the regulations normally require that pilots fly no lower than 1000 feet over built-up areas, or 500 feet over any other area. CASA may investigate low flying incidents. To do so effectively, however, CASA requires sufficient information to allow the aircraft involved to be identified.