What do airplane engines ROAR!!! after landing?

Answer 1

because they reverse the engines after landing to help slow down.

Answer 2

Because, besides using the brakes, they are using "reverse thrust" of the engines to help slow and/or stop the plane.

Jet engines have special deflectors that can acutally turn the thrust in the direction the aircraft is moving and slow the plane down.

Propellor driven, turbine driven aircraft do much the same thing by reversing the pitch of the propellor blades and cause the thrust to be in the direction the plane is moving, thereby helping stop the plane.

Answer 3

Marcos: Techwing has given the suited answer, and in all probability explains why you heard the engines spool up at 60 miles from the airport. What you're listening to whilst on your house is in all probability a different version of the comparable concern, despite if it is quite no longer likely that a guy or woman on the floor will pay attention a jet engine whilst the airplane is above some thousand ft. whilst an airplane is someplace interior the 2000' selection, or approximately 6 miles from the airport, reckoning on the airline, the pilots flying is had to have the airplane on what's spoke of as a competent attitude. which capacity touchdown flaps, kit down, airspeed close to very final attitude velocity, and engines spooled (revved up and able to offer an excellent type of potential if mandatory). So, from someplace in the two-6 mile selection the engines are making a honest quantity of noise, and it is in all probability what you're listening to.

Answer 4

Many Aircraft engines have what are called Thrust Reversers. It simply means just that. The force of the engines thrust is reversed and it acts like a brake to slow the aircraft down and makes a lot of noise doing it.

Answer 5

Jet airplanes use 'clam shell' thrust reversers which are put out into the thrust to reverse it the other way. The engines must increase their power to reverse the thrust power.

One example no one gave is when you blow into a straw. Blowing into a straw with no obstructions simulates an engine without thrust reversers engaged. Then, if you put your hand at the end of the straw, so the air hits it, the air is pushed back towards your face. This acts as the 'clam shell' reverser. The harder you blow, the more air blown back into your face.

Answer 6

they are the reverses. this always comes when landing. quick facts...

Thrust reversal, also called reverse thrust, is the temporary diversion of an aircraft engine's output so that the thrust produced is directed forward, rather than aft. This acts against the forward travel of the aircraft, providing deceleration. Thrust reversers are used by many jet aircraft to help slow down just after touch-down, reducing wear on the brakes and enabling shorter landing distances. It is also available on many propeller aircraft through reversing the controllable pitch propellers to a negative angle.

Answer 7

You are probably referring to the thrust reversers that are used to help slow the aircraft down during the landing roll.
It takes a lot of energy to slow a large aircraft down, & you can't expect the brakes to do all of the work.

Answer 8

Thrust Reversers and spoilers are used after touch down to slow the plane down. The engines are put up to full throttle when the reversers are engaged. That is what you are hearing.

Answer 9

Usually the pilot reverses the turbine engines to help slow the aircraft for a quicker exit from the runway.

Answer 10

Jets have "Clam-shell" like thrust-reversers that close over the exhaust and blow the thrust forward to help them slow.

Some prop-planes can reverse the PITCH of the blades do do the same thing.

The BOTH go to full thrust as they apply these methods.

Answer 11

Reverse engine braking