# Best answer: How do planes stay still in the air?

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For a plane to stay in the air, the lift force needs to overcome the force of gravity. Additionally, the thrust must overcome the drag force, which resists the plane’s motion through the air.

## Can a plane stay in the air without moving?

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. But this is incredibly rare. To stay in the air and sustain its flight, an aircraft needs to be moving forward.

## How long can a plane stay still in the air?

Planes can now fly for 21 hours non-stop.

## Why can planes fly upside down?

Stunt planes that are meant to fly upside down have symmetrical wings. They don’t rely at all on wing shape for lift. To fly upside down, a stunt plane just tilts its wings in the right direction. The way a wing is tilted is the main thing that makes a plane fly, and not the wing’s shape.

## Why do planes travel at 35000 feet?

A balance between operating costs and fuel efficiency is achieved somewhere around 35,000 feet, which is why commercial airplanes usually fly at that altitude. Commercial airplanes can climb to 42,000 feet, but going beyond that can be precarious, as the air starts to become too thin for optimum flight of the airplane.

## Do scientists know how planes fly?

In Brief. On a strictly mathematical level, engineers know how to design planes that will stay aloft. But equations don’t explain why aerodynamic lift occurs. There are two competing theories that illuminate the forces and factors of lift.

## How fast does a plane go?

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.

## What keeps an airplane up in the sky?

Four forces keep an airplane in the sky. They are lift, weight, thrust and drag. Lift pushes the airplane up. The way air moves around the wings gives the airplane lift.

## Can a helicopter stop in the air?

A helicopter that is flying forward can stop in mid-air and begin hovering very quickly.

## Can planes hover in the air?

The engineering behind making an airplane hover is actually quite complex. Airplanes, by definition, need air flowing over their fixed wings to generate lift. When an aircraft hovers, it has no forward speed, and therefore its wings cannot generate lift.

## Does Aeroplane fly in rain?

Flying in Heavy Rain

Rain doesn’t usually affect a flight much. Combining with hefty winds causes extra challenges to flight planning. The combo can even cause a change of route or a delay if the conditions are extreme. But generally speaking, airplanes are well-equipped to deal with a bit of the wet stuff!

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## Which animal can fly upside down?

The design of a hummingbird’s wings differs from most other types of birds. Hummingbirds have a unique ball and socket joint at the shoulder that allows the bird to rotate its wings 180 degrees in all directions.

## Is it possible to fly a 747 upside down?

The answer is yes for a “little” bit! Unlike military fighters, commercial planes do not have the engine power for sustained inverted flight and rely on lift from the wings. … Commercial airliners are only tested and certified for upright flight.” However, one Boeing aircraft has flown upside down – twice!

## Can pilots see at night?

The short answer is no. If you’ve ever gazed out your window into the inky blackness during a nighttime flight, you’ve probably wondered how the pilots are able to see anything from the cockpit.