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Home > Flying the Plane > What is the purpose of the flaps in an airplane?
What is the purpose of the flaps in an airplane?
Flying - Flying the Plane
Tuesday, 14 June 2011 15:29


View of the Flaps operation on the wing during a landing

Dear Capt. Lim

Can I please know what is flaps used for?

Best regards,

Tan Jun Yan


How an airplane fly

Hi Jun Yan,

Flaps are devices at the trailing edge of an airplane wings used to either increase its lift or drag depending on the selection by the pilot. The higher the selection of the flap is, the greater the drag. It is like when your palm is flat against the wind flow as you stretch your hand out in a moving car. As you reduce the angle against the airflow, the drag reduces and you get better lift whereby your hand moves up.

Flaps are used when the aircraft is slowing down in preparation for a landing. In a plane, flaps are usually used for both takeoff and landing. They are partially extended before takeoff to increase lift and reduce the runway distance required to leave the ground. They are fully extended during the landing phase to allow the aircraft to safely approach the runway at the lowest possible speed.

When a bird flies, it flaps its wings - moving them up and down swiftly. In that sense, its function is slightly different as compared to the flaps which move very gradually in an airplane.

There are many different types of flaps in airplanes but all serve the purpose of either increasing the lift or drag depending on the need of the aircraft.

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Operation of aircraft flaps on the ground


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Comments (6)

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... , Low-rated comment [Show]
hvhbj
smilies/wink.gifsmilies/wink.gifsuper exp by the legend
bjb , 23 Sep, 2013
Purpose
Dear Cap,
What Is the hypothesis of a plane?

Regards,
Ramansmilies/smiley.gif
Raman , 10 Jan, 2014
...
Hey Cap,
What is hypothesis of a plane ?



Regards,
Ramansmilies/smiley.gif
Raman , 10 Jan, 2014
The hypothesis of a plane
I believe I can fly...

lol smilies/grin.gif
Yo Rayman , 14 Oct, 2014
...
Great job,I easily understood!!!!!smilies/smiley.gif
Thanks for the info!smilies/wink.gif
Now I became a expert on flaps now!smilies/kiss.gif
Coco , 03 Dec, 2014

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