Aircraft. Involving Jet Propulsion How Does The Motor Go Into Reverse Mode When Jet Aircraft Are Landing.?
Aircraft. The Landing Sequence Of Aircraft, The Braking Effect Of Jet Propulsion Is What I Want To Know About. Is The Thrust Some How Diverted Up Fo
Aircraft : Involving Jet Propulsion How Does The Motor Go Into Reverse Mode When Jet Aircraft Are Landing
The landing sequence of aircraft, the braking effect of jet propulsion is what i want to know about. Is the thrust some how diverted up forward how does the motor go into reverse mode. Is the motor shut down some how and what happens as far as braking goes when jet airliners are landing. ~~~ kevin h ~~~
Best Answer To Aircraft Question
Hi Kevin, That's a good question. As someone already mentioned, the engines don't actually reverse direction when the pilot(s) engage reverse thrust. Mechanical doors (or vanes as the other poster mentioned) extend to divert the thrust forward. I fly an Airbus 320. When we first touch down, the power is at idle. Once all three sets of wheels touch the ground we engage the reversers by lifting 2 levers (one for each engine) on our thrust levers. The initial movement deploys the reversers with the engines still at idle. If we continue to pull backwards on the thrust levers, we actually add power to the reverse process which slows the airplane faster than merely deflecting the residual idle thrust. The other deceleration you probably feel on touchdown will come from spoilers on the top of the wing followed by brakes. Most jet aircraft have spoilers that automatically deploy as soon as the aircraft senses weight on the main wheels (. touchdown). In addition, most jet aircraft also have some form of auto-braking which will automatically apply the brakes to achieve a certain rate of deceleration. For shorter runways such as Chicago's Midway (KMDW) or John Wayne Orange County (KSNA), pilots will employ a combination of spoilers, reverse thrust AND auto-braking. On longer runways (depending on how close the following traffic is), a pilot might choose to leave the auto-brakes off and merely deploy the reversers at idle using aerodynamic braking (kind of like sticking your hand out the window of a moving car) to more gradually slow the airplane to a comfortable taxi speed. Everyone pretty much uses the spoilers all the time.
All Answers To Aircraft Questions
Answer 1At the rear of the Jet Engine where the exhaust and thrust comes out are a series of Cascade Veins or Buckets that DIVERT the THRUST coming out FORWARD slowing the Aircraft down.
Answer 2they throttle down and they use wheel brakes
Answer 3Hi Kevin, That's a good question. As someone already mentioned, the engines don't actually reverse direction when the pilot(s) engage reverse thrust. Mechanical doors (or vanes as the other poster mentioned) extend to divert the thrust forward. I fly an Airbus 320. When we first touch down, the power is at idle. Once all three sets of wheels touch the ground we engage the reversers by lifting 2 levers (one for each engine) on our thrust levers. The initial movement deploys the reversers with the engines still at idle. If we continue to pull backwards on the thrust levers, we actually add power to the reverse process which slows the airplane faster than merely deflecting the residual idle thrust. The other deceleration you probably feel on touchdown will come from spoilers on the top of the wing followed by brakes. Most jet aircraft have spoilers that automatically deploy as soon as the aircraft senses weight on the main wheels (. touchdown). In addition, most jet aircraft also have some form of auto-braking which will automatically apply the brakes to achieve a certain rate of deceleration. For shorter runways such as Chicago's Midway (KMDW) or John Wayne Orange County (KSNA), pilots will employ a combination of spoilers, reverse thrust AND auto-braking. On longer runways (depending on how close the following traffic is), a pilot might choose to leave the auto-brakes off and merely deploy the reversers at idle using aerodynamic braking (kind of like sticking your hand out the window of a moving car) to more gradually slow the airplane to a comfortable taxi speed. Everyone pretty much uses the spoilers all the time.
Answer 4nice question
Answer 5The best aircraft to see this is on the 737 the engines have clamshells that are deployed to direct the exhaust forward.
Answer 6Great question. Thanks for the answer T21,next time im on a plane Ill know whats happening!!
Answer 7engine never goes into reverse . It reverses the airflow from the engine forward. By using what the call thrust reversers. Turn your faucet in your sink on full blast , cup your hand put it in the water flow. water comes straight up now . That is basically what they do with the air from the engine.
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