Linked Questions

41
votes
9answers
83k views

What are the pros and cons of high-wing compared to low-wing design?

What are the advantages and disadvantages of a high-wing vs. low-wing aircraft design? When might one prefer one to the other? Is the answer the same for large and small aircraft?
53
votes
3answers
43k views

What's the advantage of the F4U Corsair's gull wing design?

What is the advantage of the F4U Corsair's gull wing design? Is there also a disadvantage to this? The wing design just seems odd, and as far as I know it is one of the only planes to use this design....
10
votes
6answers
2k views

Has any aircraft ever been designed such that it could descend safely with no control input?

Has there ever been any aircraft of any type that could glide safely with no control input simply based on the way the frame of the aircraft was designed? I was trying to think of requirements for ...
20
votes
3answers
5k views

Why do blimps have fins?

Why do blimps have fins? Can't the two (or so) engines already control direction?
15
votes
3answers
11k views

Why do low wing aircraft have higher dihedral than high wing aircraft?

I have noticed and read in books that low wing aircraft have higher dihedral than high wing aircraft. Dihedral is design feature for lateral stability so should be needed for both designs. So why is ...
8
votes
3answers
2k 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 ...
17
votes
3answers
1k views

How does turning a small plane by opening the doors work?

I've just watched a video of a small Cessna turning not with ailerons or rudder but by opening its doors. They said that the door acts like a rudder, but in the video one of the guys opens the left ...
7
votes
2answers
3k views

Would a vertical stabilizer that extends both above and below the centerline be benefit or hindrance?

Ignoring for a moment potential schematic difficulties in creating an aircraft that can land and take-off without threatening a downward vertical stabilizer, would a vertical stabilizer that extends ...
7
votes
1answer
12k views

What is the Keel Effect?

What is the Keel Effect and how does it happen? Is it the same as Pendulum Effect or it doesn't exist? The Pilot's Handbook of Aeronautical Knowledege by the FAA has an explanation that says: An ...
2
votes
4answers
572 views

How does the “pendulum effect” affect biplanes?

A high wing airplane will correct itself (lateral stability) when disturbed because its c.g. is below the c.p. (looking at the plane from it's side), according to this forum post and the book below. ...
10
votes
3answers
832 views

Is this paragraph about the dihedral effect in the FAA's Glider Flying Handbook correct?

I've been reading the FAA's Glider Flying Handbook, 2013 (FAA-H-8083-13A). In chapter 3 ("Aerodynamics of Flight"), the book is discussing stability. On page 3-12, it states: Dihedral is the upward ...
5
votes
2answers
2k views

Why do most commercial aircraft have their fuselage over the wing, instead of under? [duplicate]

Almost all commercial jets today seem to have the fuselage/cabin mounted above the wing, why is this? why isn't it mounted under the wing like some freight airplanes? Examples of above and under? ...
4
votes
2answers
952 views

Does the dihedral effect happen during coordinated flight?

I have researched some about dihedral effect due to a question that I had, and I discovered that my question is essentially already answered, here and here, collectively. This has led me to a new ...
7
votes
2answers
482 views

How would a low-airspeed fixed-wing drone be designed to reduce effects from gusts and wind shear?

In a story I am working on, the characters need a fixed-wing drone that can rendezvous with a blimp, where by "rendezvous" I mean "come within a very short distance at low relative airspeed". The ...
4
votes
1answer
591 views

Is a biplane without dihedral more stable than a low wing monoplane without dihedral?

I was wondering if a biplane's top mounted wing created the same stability effect as that of a high wing airplane? Also, would the unstable effects of the low wing cancel the stability provided by the ...

15 30 50 per page