Linked Questions

31 votes
2 answers
22k views

What is vortex lift?

In a recent question I asked, I was given an answer by Peter Kämpf and he described something about lift being created by a vortex used on delta wings and the Bird of Prey wing. How exactly does ...
Ethan's user avatar
  • 9,349
24 votes
4 answers
5k views

Do similar angles on a plane make it more stealthy?

I learned in my intro to engineering class at my college that 5th gen fighters (which are stealth aircraft) are designed with similar angles to evade radar. Why is this true? Also, does the angle ...
Keegan's user avatar
  • 6,877
16 votes
4 answers
12k views

What is a canard?

While browsing this Stack Exchange, I regularly come across mentions of canards. I am not familiar with this term, and Google only gives information about ducks when I search for "canard". So, what is ...
Nzall's user avatar
  • 892
12 votes
2 answers
8k views

Why are downward pointing winglets more efficient?

While most aircraft have upward-pointing winglets Source there are also some UAVs (I couldn't find any manned aircraft$^1$) with downward pointing winglets. Source I'm pretty sure that other ...
Gypaets's user avatar
  • 4,375
8 votes
4 answers
3k views

Does "pendulum effect" apply to hang gliders or any aircraft?

In discussion of aircraft roll stability in FAA paragraph on dihedral effect and in keel effect and in Why are high wing aircraft more stable the question of pendulum effect arises. This is usually ...
Pilothead's user avatar
  • 20.1k
8 votes
3 answers
2k views

What "designs" the dihedral angle in modern airliners?

Is this an accurate description of the design process for modern jet airliners? If not, why not? What other factors come into play in determining the choice of dihedral angle? Designer starts by ...
quiet flyer's user avatar
  • 22.6k
8 votes
3 answers
3k views

Why do many stealth aircraft have a similar shape and design?

I have been playing around on a bunch of programs with stealth planes and their general shape. I know that they are required to be flat and have some sort of special material/paint on to 'absorb' the ...
Zapamwamba's user avatar
7 votes
3 answers
4k views

How does the use of Leading Edge Root Extension help in increasing stall angle?

Leading Edge Root Extensions were first used in Northrop F-5A/B Freedom Fighter, which first flew in 1959. After that, many fighter air-crafts have used it, some of which are mentioned after the ...
Victor Juliet's user avatar
6 votes
4 answers
3k views

Why don't airliners have rudders on the winglets?

There are a couple airplanes out there that use the winglet as the rudder, but why doesn't the winglet have a rudder on it to increase the turn of the aircraft?
Ethan's user avatar
  • 9,349
5 votes
1 answer
2k views

What are the aerodynamic advantages and disadvantages of the Weltensegler wing?

What are the aerodynamic advantages and disadvantages of the Weltensegler Wing? Would this kind of wing configuration come to help for a glider? Is there any difference between them and gull wings? ...
Risshi Jain's user avatar
3 votes
2 answers
2k views

Why is the Concorde, and not other aircraft, getting this fog/condensation, over the wing, at *takeoff*? [duplicate]

Several pictures of the Concorde taking off, show a cloud of water droplets (fog) above the wings. Like this: I assume the fog is created due to low pressure over the wings. But, doesn't the size ...
Brock Adams's user avatar