Linked Questions

6 votes
3 answers
2k views

Why are trailing edge flaps used for landing? [duplicate]

Why are flaps used when landing? Doesn’t a flap increase lift? Edited: why are there so many different flaps on the back of a wing? Isn’t one just used when taking off and landing? Are the others ...
FlightWatcher's user avatar
3 votes
4 answers
1k views

Why is Cathay Pacific flight path so long? [duplicate]

I was looking at flightradar24 and found this: Which shows a flight from Vancouver, Canada to Hong Kong by Qatar Executive. On the other hand I found this: A flight from New York to Hong Kong by ...
Snack Exchange's user avatar
2 votes
2 answers
103 views

Why is the pressure lowest towards the front of an airfoil? [duplicate]

According to this answer, the low pressure on top of an airfoil is caused by the curving away of the wing (what I interpreted it as). If you look at the lift distribution over an airfoil, you'll see ...
Wyatt's user avatar
  • 1,319
0 votes
1 answer
266 views

Is using flaps the same as increasing the AOA? [duplicate]

The purpose of trailing edge flaps is to give the aircraft more lift at lower speeds. But do simple flaps beneficent more than increasing the angle of attack? The image looks like part of the wing ...
YAHsaves's user avatar
  • 1,211
0 votes
2 answers
134 views

Reasoning for an inboard flap- take off [duplicate]

so Ive been looking into airplane flaps, like the longer one for take off- Is it correct to say that the only reason to have one is for take off, to make it take off easier? And so when they take off, ...
Jonathan Ching's user avatar
0 votes
2 answers
93 views

Trailing edge flaps use [duplicate]

Why is it that trailing edge flaps are only used at lower speeds? Can they be used at higher speeds too?
JohnM's user avatar
  • 3
0 votes
1 answer
71 views

How does varying camber affects control over an aeroplane? [duplicate]

How does a trailing edge flap actually help an aeroplane? It just changes camber but what does that exactly do that’s beneficial?
Ranulph's user avatar
24 votes
4 answers
6k views

Why are heavy flaps better than just a bigger wing?

Flaps increase lift during landing and T/O. But when retracted, they do nothing. The space needed to stow the common fowler flaps can't be used for anything else - fuel or structure. Extended flaps ...
Abdullah is not an Amalekite's user avatar
3 votes
4 answers
2k views

Which one of these flaps is used on take off and land?

I’m really confused about which one of these flaps is used on take off and land? I didn’t even know there were different types, I thought that the top configuration was the only used one today? Also, ...
FlightWatcher's user avatar
12 votes
5 answers
3k views

What is the point of making one control surface play the part of multiple control surfaces?

For example, flaperons (flaps + ailerons) and elevons (elevator + ailerons), are all individual control surfaces but play the roles of two different control surfaces. What is the point of making a ...
Madhav Sudarshan's user avatar
10 votes
5 answers
4k views

Why are the wings of some modern gliders tadpole shaped?

Why are the wings of some modern gliders tadpole shaped, rather than teardrop shaped? An example is the Schleicher ASG 29. Or did they just add a flat plate at the trailing edge for the flaps and ...
Fred's user avatar
  • 1,517
7 votes
4 answers
3k views

Why are the wings of some planes changing width?

I was travelling recently in a Boeing 737 and I noticed one thing that I didn't understand. After the takeoff the wing flaps started retracting into/under the wing, making it narrower. The opposite ...
pajonk's user avatar
  • 173
11 votes
3 answers
6k views

Aerodynamic advantage of blunt noses and WHY (subsonic)

Compared to a sharper conical nose, a blunter conical nose is aerodynamically superior in subsonic flight. My question is why. I've read a lot about this and allegedly: A blunter nose accepts a wider ...
Aerocurios's user avatar
8 votes
2 answers
5k views

Do negative flaps increase glide ratio?

If I understand correctly, gliders uses negative flaps while crossing between 2 thermals, but I don't understand why. For me: positive flaps decrease sink rate but increase drag and thus worsen glide ...
Manu H's user avatar
  • 16.5k
5 votes
4 answers
6k views

How do I choose the correct airfoil?

I am currently working on a personal single seat, piston aircraft that I would fly myself and I am currently in a bit of conundrum when it comes to my wing design. In this project, I assigned us in 2 ...
Mephistopheles Faust's user avatar

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