Linked Questions

42
votes
3answers
15k views

Why does supersonic flight detach airflow from a wing?

I've read in several answers to questions that when a wing passes the speed of sound the airflow will become detached from the craft towards the rear quarter of the wing (thus making things like ...
15
votes
4answers
7k views

How high does the ground effect last?

Up to which height is the ground effect still significant enough to be taken into account? Would this height be sufficient to actually fly above the ground, overcoming at least trivial obstacles like ...
11
votes
3answers
24k views

How does the raked wingtip of the Boeing 787 work?

The wing tips are very different on these airplanes. The wingtip on a Boeing 787 is a sharp triangle, while the wingtip on a Boeing 737-300 is flat. British Airways Boeing 787-8 G-ZBJC wingtip | by ...
13
votes
3answers
39k views

How does wing sweep increase aircraft stability?

I was told at one point that the sweep of a wing can help with the straight line stability of the craft, in fact I think it's one of the main systems that keeps flying wings flying straight (like the ...
26
votes
3answers
4k views

Why does the DC-10's horizontal stabilizer have such a pronounced dihedral?

If you look at this picture, you'll see that the horizontal stabilizer has a very pronounced dihedral in comparison to the wings. Could somebody explain in a simple way why? I understand that a ...
14
votes
2answers
11k views

What is the reason for the poor low-speed characteristics of sweptback wings?

I know there are advantages of swept-back wings delaying shock-wave allowing a aircraft to fly faster. However, what are the disadvantages. I know one of them is that they have very poor low speed ...
12
votes
2answers
2k views

Is there any application where the crescent wing would be the best wing planform?

To my knowledge the only aircraft featuring a crescent wing that was built in numbers was the Handley Page Victor. It seems that a crescent wing offers the possibility of a high subsonic/transonic ...
10
votes
1answer
2k views

Why does the wing root of the A330 have a pronounced twist?

just wondering what the purpose of the pronounced twist on the Airbus A330 wing root is, I've noticed this on the 380 as well.
6
votes
3answers
6k views

What is the way to calculate the required twist of a flying wing?

I am interested in flying wings and a couple of weeks ago I started researching them. I found mh-aerotools.de website and think it's a great source. The website stated that flying wings need twist ...
1
vote
1answer
164 views

Twist optimization for a low speed aircraft

I'm currently designing an aircraft with the following specifications- s=1.8m^2, AR=7-8, trapezoidal planform with a taper ratio of about 0.45, a load of 25KGs and a cruising speed of 13-15m/s. I'm ...