Questions tagged [wing]

The structures extending from the sides of the plane that generate most of the lift to keep the plane in the air.

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0answers
90 views

Why are the Antonov An-124 horizontal stabilisers directly behind the wings?

With the wings being on the same plane as the horizontal stabilisers, turbulent air from the wings would interfere with the airflow over the elevators making them flutter. Surely putting the ...
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4answers
151 views

Wing dihedral in a biplane

Would a biplane be able to fly if the upper and lower wings were in opposite dihedral? Imagine a wing configuration similar to the fictional "X-wing" design from StarWars. What would be the ...
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Do black wings have better aerodynamics?

This news article links to a 2019 academic study: Thermal impacts of wing coloration on surface temperature during bird flight. Most of birds have dark upper wing feathers. Dark colors keep a sunlit ...
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How to calculate the the variation of Cl wrt the angle of defection of the elevator?

I've checked the lift requirements of the aircraft and selected an optimal airfoil and designed a wing with dimensions of MAC 47cm and semi-span of 163.2 cm and a airfoil S1223. The horizontal ...
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0answers
61 views

Why do tapered wings not stall at the root first?

Why do moderate tapered wings stall first at mid-wing section and high tapered wings stall at tip first? The effective AoA should be always higher close to the root? (considering no geometric or ...
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1answer
635 views

What's this part on the wing of BAE Systems Avro 146-RJ100?

It was always a question that what's this part on the wing of BAE Systems Avro 146-RJ100: Is it kinda aerodynamic component?
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How to model the rounded tips of a rectangular wing?

Here again for my report about the aerodynamics of a wing. Now I am dealing with the Fuji FA 200-180 wings. I am trying to draw the wing in Matlab. This aircraft has a no-tapered rectangular wing, so ...
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1answer
180 views

Why aren't grid fins used as wings for low speed aircraft?

Grid fins are used "commonly" in aerospace - usually for things like control of guided bombs or spacecraft. The most obvious example is SpaceX's use on the Falcon 9, but the US and Russian ...
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1answer
86 views

How many zig-zag patterns are there in a dog tooth leading edge? [closed]

And also what is the difference between saw tooth and dog tooth leading edge? Like is there any difference in the number of "zig-zag" patterns on the wing?
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1answer
102 views

Why doesn't the centre of pressure move in the case of a symmetric aerofoil?

Why doesn't the CP (centre of pressure) move in the case of a symmetric aerofoil? Also, why does the CP move backward in the case of a flat plate?
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1answer
121 views

Would a wingtip stall still be bad if there was no aileron there?

If there was no aileron on the wing tip, would a tip stall still be bad compared to a root stall?
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1answer
55 views

What does it mean for a wing's lift distribution to be elliptical when the planform is not?

How would you go about finding an equation for the lift coefficient of this wing where the lift distribution is known to be elliptical but the planform is not?
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Computing Cl using Cp values? [duplicate]

So, from a Lab, I have Cp values for an incidence corresponding x/c on the upper and lower surfaces and I would like to calculate the Cl value at this incidence. I'd like to do this through python, so ...
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1answer
207 views

What is this intake bottom the wing of C-5 and why is it placed there?

There are two intakes bottom the wings of C-5. What are those and why are they placed there?
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2answers
144 views

Will increasing the wing area result in higher aircraft range?

Intuitively, it seems that a low loading (large area) wing will allow to climb higher from the start, thus increasing true air speed and range. At the same time, a low loading wing also calls for a ...
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1answer
326 views

What are these crevices below the wing of B-52 bomber?

What are these crevices below the wing of B-52 bomber?
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What is this part which is mounted on the wing of Embraer ERJ-145?

Take a look at the yellow parts which are mounted on the wing of an Embraer ERJ-145. What is it? Two closer images: From bottom:
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1answer
65 views

Why does the elliptical wing planform have two different types of curves?

Generally, I have seen that the planform of an elliptical wing consists of two different types of elliptical curves The elliptical curve towards the leading edge has a lower value for semi-minor axis ...
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Do modern aircraft still use load bearing ribs in wing construction?

Modern aircraft are generally of monocoque construction. Does this apply only to the fuselage, or are modern wings made without load bearing ribs as well? Are they just for shaping of the metal skin?
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1answer
59 views

Why generation of lift is more at mid span of the wing?

For the same condition like same density, wing area, free-stream velocity, From the above figure one can see more pressure differential and hence more lift at mid span of the wing? What causes this ...
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1answer
58 views

How do coefficient of lift/drag variation with speed differs between swept and unswept wings?

Trying to understand the coefficient of lift/drag of swept and unswept wings as speed increases. Some example questions and statements- A swept wing will have a lower max Cl at subsonic and ...
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1answer
156 views

What is the exact wing chord length and thickness for Boeing 747?

I can't find this info anywhere and all they give me is the ratio. However, I need the exact/approximate values
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2answers
144 views

For subsonic aircraft, would adopting a higher wing loading decrease drag?

First, let's assume that problems with approach/TO speeds can be fixed by high-lift devices. Here we read that the wings create more drag than the fuselage. So, an improvement seems obvious; shrink ...
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2answers
227 views

Why are wings not tapered all the way to reduce vortex drag?

Wingtip vortices are created by, well, wingtips. These vortices create drag. One of the approaches to reducing this drag is taper the wing, source source Will eliminating the wingtip, as on the ...
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57 views

How can this distance on the wing be calculated? [closed]

To calculate a wing's Mean Aerodynamic Chord MAC, I need the length of the line in blue in this image: How can I calculate this distance?
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1answer
194 views

Is there any advantage to having both wings integrated into a single wing unit, rather than being attached separately to the fuselage?

if I have a wing, which is split in the middle of it and attached at each side of the aircraft (like in any commercial aircraft today), I get a bending moment at the root of the wing. What if I have ...
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1answer
184 views

Is co-flow jet wing technology workable?

Coflow Jet claims that their idea of sucking air from the trailing edge and blowing it out the leading edge improves efficiency. But this looks like nothing but flow control done wrong to me. And by ...
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1answer
126 views

What about an airfoil's shape makes air flow faster around it?

An airfoil's shape causes air above the wing to move faster than below the wing to allow for the difference in air pressure as dictated by Bernoulli's principle. This is what many sources say, but I ...
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68 views

Is it possible for a higher aspect ratio wing to have increased drag compared to a lower aspect ratio wing of the same area?

Since increasing aspect ratio while maintaining wing area decreases chord, one can expect Reynolds number to decrease. Are there cases in which the resulting increased coefficient of friction would ...
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3answers
141 views

How does downwash affect angle of attack?

Many aerodynamics textbooks, as well as many answers on here and similar websites claim that the downwash downstream of a wing induces a net angle of attack that is lower than just looking at flow ...
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1answer
114 views

How do anhedral and dihedral affect the efficiency of a wing?

Higher pressure air on the underside of a wing generally rolls outboard around the wingtip and over the top of the wing reducing lift and therefore increasing induced drag. My intuition would tell me ...
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93 views

Could an aircraft have squashable wings that get thicker as it flies faster?

As I understand, for high speed subsonic flight a thicker wing is more aerodynamic, and at low speed, a thin wing is preferable. Could aircraft which range in speed from 180 to 620 knots (most ...
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21 views

Whats the effect of aerofoil camber and thickness on Clmax and Cdmin?

Does anyone have any experimental references/wind tunnel testing testing data for various thickness and/or camber?
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2answers
111 views

Does the center of lift have to be in line with the center of mass?

Imagine 2 theoretical planes, A and B, shown in the image below. The center of mass is yellow, and the center of lift is blue. Would plane A and plane B work as well as an airplane with the center of ...
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4answers
243 views

Why does a mid-wing aircraft have lower drag?

Why does an airplane having a mid-wing have lower drag than high- or low-wing configuration even if they have wing of same shape and size? This article (PDF) claims it's true.
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3answers
196 views

Would this quadrilateral-shaped airfoil produce lift with a zero angle of attack?

I have been recently studying the shapes and characteristics of different high-lift airfoils that have been used for VTOL aircrafts. While studying these different designs today, a particular ...
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3answers
183 views

Has anyone built an aircraft with a flat ring wing?

When I try to search for circular wing aircraft, everything I find has the wing loop up over the top of the craft. What I want to see, however, is basically an Aerobie Flying Ring, but with a ...
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2answers
137 views

Does dihedral improve roll stability in gusty conditions?

Against roll instability, should I add more dihedral/a high wing? I'm trying to build an RC plane that can handle windy conditions. For that I want extraordinary aerodynamic stability. For ...
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1answer
82 views

Why this inertial regulator of dragonfly wing pitch reduces self-excited coupled flapping and feathering vibrations and improves gliding flight speed

The pterostigma of insect wings an inertial regulator of wing pitch is linked in this answer to Why do dragonflies have these special little spots on their wings? (open access copy here) The Summary ...
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1answer
78 views

How to calculate the radius of a turn as a function of speed, bank, wing-loading, and Cl?

Although the question of how to calculate the radius of a turn of an aircraft has been answered before using only the speed and the bank angle, the reality is that 2 aircraft with the same speed and ...
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1answer
158 views

What is an augmentor wing?

What is an augmentor wing in the context of STOL aircrafts? and is it still used today? This seems to be a term that I can only find in NASA aerodynamics (specifically powered-lift) research papers in ...
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2answers
360 views

The wing has a pressure gradient along the AB direction, is there a pressure gradient along the CD direction?

The wing has a pressure gradient along the AB direction, is there a pressure gradient along the CD direction?
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2answers
239 views

What is the reason why dihedrals are used when building a plane? [duplicate]

How does dihedral affect flight characteristics of a plane? I know it increases stability, however is it the only reason why it is implemented? If so, aren’t there more effective methods to stabilize ...
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1answer
269 views

What are the differences between battens and ribs?

What are the differences between battens and ribs?
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2answers
108 views

Can winglets be used to compensate the high induced drag created by a low aspect ratio wing?

I have read in some articles that the major advantage of having a high aspect ratio (AR) wing is to reduce the induced drag. If winglets main job is also to reduce the induced drag, how much drag does ...
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4answers
241 views

Why did wings start to be made with aluminium skin instead of fabric?

Why did engineers start designing planes with aluminium skin on the wings instead of fabric covering? While the force of lift acts on the skin, to my knowledge it is not subject to high stresses
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1answer
130 views

Could a wing be designed to exploit both normal flying and ground effect?

Ground Effect planes' wings are stubby and the height over the ground or water is limited to wing span. Could a wing be designed to exploit both normal flying and ground effect together to give the ...
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3answers
360 views

What is the impact of camber on CLmax?

I was reading Aerodynamics for Engineering Students by Houghton and saw the following graph: A lot of other sources say that increasing camber increases CLmax, like the graph below. I am a little ...
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2answers
248 views

What are different components of an engine pylon?

What are the different structural components that are inside the fairing of engine pylon and what are the functions of each part? The pylons for each aircraft are made of Ti-64 alloys, can they be ...
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1answer
54 views

Can an airfoil have multiple aerodynamic centers?

Aerodynamic center is a point where the moment is independent of angle of attack. Can we have 2 or more such points? Does it necessarily lie inside the airfoil?

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