Linked Questions

58 votes
6 answers

Is a winglet better than an equal span extension?

Is there indisputable evidence that a winglet improves performance over an equal span extension? Please note: I am only interested in L/D improvements. Winglets do improve roll performance, that is ...
Peter Kämpf's user avatar
30 votes
10 answers

What is ground effect?

We've all heard the "acts like a cushion of air" explanation tossed casually around by CFIs. There's also plenty of books and reference materials that give a detailed, accurate, and complete ...
Steve V.'s user avatar
  • 23.2k
18 votes
4 answers

What is the performance of a flat plate wing?

By flat plate I mean this: Source: Physics.SE Low performance indeed, but how much low? How would: The angle of attack, The speed range, The turn capability, The fuel consumption, Or other ...
mins's user avatar
  • 73.3k
17 votes
2 answers

Why is the coefficient of drag for straight wings at supersonic speeds lower than for swept wings?

Why is the coefficient of drag of a straight wing lower than the coefficient of drag of a swept back wing at higher supersonic speeds (above, say, Mach 2)?
Adder's user avatar
  • 1,452
11 votes
2 answers

Why do delta wings generate less lift at a particular angle of attack compared to straight wings?

I simulated a delta wing and a straight wing in xflr5 with the same profile, wing area and airspeed (very low airspeed. around 10 m/s. it's for a model aircraft). The straight wing was operating at ...
Sherlock_Dumbledore's user avatar
8 votes
2 answers

How much does the fuselage of an airplane contribute to yaw stabilization?

Obviously considering that (almost) every plane has a vertical stabilizer, probably not, but for a relatively long aircraft does the fuselage measurably contribute to the yaw stabilization relative to ...
Shack de Shnaek's user avatar
6 votes
2 answers

Is there a parameter that links the areas of the fuselage and control surfaces? [closed]

Do aircraft designers look at the ratio of how much fuselage surface area can be loaded onto a given unit of wing and tail surface area including elevator, aileron, rudder etc? (Possibly, the surfaces ...
Krishnaraj Rao's user avatar
6 votes
2 answers

How to trim in level flight when speed increases?

What is required to happen to control surfaces and trim tabs to remain trimmed in straight and level flight, as speed increases? (for a GA propelled aircraft) My manual tells me that the elevator ...
Ze Jibe's user avatar
  • 265
6 votes
2 answers

Does lateral stability decrease during transonic flight? If so, why?

I haven't got much more to explain other than the title of the question itself. This question was written down in my notes that I took while studying Principles of Flight for my EASA commercial ...
gaveasky's user avatar
  • 243
6 votes
1 answer

How does rudder size influence its ability to produce lateral lift?

Does anyone know how the area, height and width of a rudder affect how well it provides lateral lift? I've heard that the most effective rudders are around 35% of the vertical stabiliser MAC but is ...
Will Patterson's user avatar
5 votes
5 answers

How does the angle of attack vary in turns?

I read somewhere that when the aircraft banks to turn, its angle of attack increases.Since angle of attack is the angle between the relative wind and chord line, how does turning increase it? Is it ...
user2927392's user avatar
  • 2,359
4 votes
1 answer

Why are the aerodynamic characteristics of a finite wing different from the properties of its airfoil section?

Why are the aerodynamic characteristics of a finite wing different from the properties of its airfoil section?
B737lover's user avatar
4 votes
2 answers

What is the relationship between angle of attack and wake turbulence?

It is said that when the preceding airplane is heavy, clean, and slow, wake turbulence is much hazardous due to greater angle of attack is requried. However, why does increasing angle of attack result ...
Mun's user avatar
  • 1,837
3 votes
3 answers

Why stall on 2D faster than 3D?

why cl on 2D is better than 3D. and why cl 2D stall faster than 3D? what happens when CP continues to move forward on the wing. and what happens when CP continues to move forward on the elevator.
Ade Firmansyah's user avatar
3 votes
1 answer

What would be the power requirements and performance of a Scroggs-type delta-wing aircraft with a 250 cm span?

Roy Scroggs, a tailor, patented in 1917, US1250033, and in 1932 US1848578, a Delta Wing plan form machine 'Flying Dart', flight tested with an OX-5 engine, they say ...
Urquiola's user avatar
  • 1,631

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