Stack Exchange Network

Stack Exchange network consists of 174 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

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

1
vote
1answer
79 views

What is the purpose of this span wise “false spar” on Affordaplane wings?

This is the wing of an Affordaplane Ultralight,what is the use of those spanwise foam boards between the foam ribs,I know it's not for aesthetics.
0
votes
1answer
126 views

What are these lumps on the top side of the wings of military aircraft? [on hold]

There is an online video game called War Thunder that lets you fly various planes from roughly the 30s to the late 50s. It has some pretty detailed models, and I've noticed these lumps on the wings of ...
7
votes
2answers
563 views

Can “a drone” damage the wing of “an aeroplane” to the extent it actually threatens its ability to fly?

I stumbled across this video by the University of Dayton, showcasing the amount of damage a certain type of drone can do to a wing, and they wrote a whole article about it. While most of said article ...
1
vote
2answers
60 views

Could reduced-lift wingtips allow an airplane to generate less wake turbulence?

Would it be possible to weaken the wake vortices generated by a large aircraft (which can be dangerous to smaller aircraft behind the large aircraft, and are the limiting factor determining how ...
9
votes
2answers
1k views

What is the function of the leading edge strip?

I understand the function of every wing part labelled above except the leading edge strip,what is its use in a fabric wing and will the wing function normally without it,if removed?
1
vote
2answers
73 views

To determine wing loading, do you need to subtract the weight of the wing from the gross weight?

Is it true that I must subtract the weight of my ultralight wing from the gross weight of my airplane inorder to determine the wing loading of my ultralight airplane? If yes,why is this so? I read a ...
1
vote
2answers
101 views

In the attached image of the Hoffman development of Arup design, the wing is shaped in a somehow anhedral way. Why?

Most airplanes of its days had a Dihedral, or a wing thickness tapering with a 'V' shape, this one is the opposite, hints exist as done to avoid: 'Dutch Roll', or that the ordinary way will impair ...
0
votes
2answers
43 views

Finding the center of gravity/centroid of an airfoil?

Im in the process of building myself a wing frame out of balsa wood. However, as a high school student thats just started aerospace engineering, im not really sure how to go about it in some ways. ...
2
votes
1answer
36 views

Accounting for torsional forces during wing load tests

According to this aviation.se question, wing load tests are done by placing weights on the wings (upside down). This unfortunately only tests the wings bending loads (for cantilever wings) and the ...
1
vote
1answer
49 views

Is the shear centre of a wing the same as its aerodynamic centre?

How can the shear centre of a wing be located and is it the same as the aerodynamic centre of a wing? Lastly, I know how the centre of pressure interacts with the aerodynamic centre but not the wing'...
3
votes
1answer
60 views

What are the rules of airfoil thickness from root to tip on tapered wings?

I'm doing some research on wings and airfoils used in the 30s and 40s, and I'm trying to understand the rules about airfoil proportional thickness changes across the wing (root to tip) on tapered ...
3
votes
1answer
69 views

Velocity of air flow around aerofoil

To find the velocity of the air flow at each section of the aerofoil, am I right to say that the horizonatal velocity of the air flow is constant throughout the chord while the vertical component of ...
7
votes
1answer
571 views

Why does a rectangular wing stall first at the root?

Why does a rectangular wing stall first at the root? as opposed to tapering of the wing which causes the stall at the tip and moving inboard?
5
votes
1answer
151 views

Can this vane prevent/delay wing stall?

Given that a stall results from the airflow over the top of the wing separating from the wing at high angles of attack, would it be possible to prevent, or at least ameliorate, a stall by deflecting ...
0
votes
2answers
115 views

Do stall strips mean that wing washout is not required?

The Wikipedia page on stall strips states that AA-1 Yankee airplanes used stall strips to avoid tip stalls (and spins) because wing washout couldn't be used. So my question is: can two stall strips ...
0
votes
0answers
223 views

Why don't more airplanes incorporate spiroid winglets? [duplicate]

In typical airplanes, lift induced drag can account for the majority of the overall drag. Why don't more aircraft employ methods to reduce this and specifically why not spiroid winglets? From every ...
1
vote
1answer
123 views

How can an airplane roll,yaw and pitch up and down without control surfaces?

This is Sprat 103 ultralight, it has no ailerons, and no ruddervator ( on its v-tail),how then does it fly controllably?
0
votes
3answers
153 views

Bed sheet as wing skin?

https://en.m.wikipedia.org/wiki/Aircraft_fabric_covering This article states several early aircrafts that successfully used cotton as wing skin including Wright flyer. "Colditz Cock" glider had its ...
1
vote
0answers
26 views

How does pitch moment affect load distribution on a wing?

I am to load test an airplane wing,how does pitch moment(Cm) comes into play or is it insignificant in relation to wing load distribution? St cyr 24 is the airfoil of the wings, at 10° Cm=0.07,how ...
8
votes
1answer
72 views

Is aspect ratio efficiency related to the momentum added to the air?

Many years ago I was taught that for generating lift or propulsion, lower losses were associated with imparting less momentum change to a larger volume of air, and higher losses were seen when ...
2
votes
1answer
75 views

How do wing ribs withstand lateral lift force?

During roll,there is a vertical component of lift that keeps the plane in the air and an horizontal component that actually rolls the plane,how are wing ribs designed to help withstand this vertical(...
0
votes
2answers
185 views

Does wing paint colour improve airplane fuel efficiency?

If birds that fly very long distances like seabirds have darker colours on top of the wings and lighter colours underneath the wing, is it possible that painting airplane wings similarly may improve ...
2
votes
1answer
116 views

Strut braced or wire braced airplane wings?

For an ultralight (or other airplane designed for slow flight), would a strut-braced or wire-braced wing be more efficient aerodynamically?
2
votes
3answers
179 views

Do high-wingers have dihedral?

I know that high wingers have an inherent dihedral effect. Are there any examples of high wing aircrafts with a dihedral? If so, what is the reason behind it?
1
vote
1answer
75 views

How does washout affect the wing incidence required?

In theory: if I wanted to build an model aircraft with (zero zero) wing/tail incidence, how would washout affect the root incidence required? E.g. if a wing has 2 degrees washout at the tip, would ...
1
vote
4answers
258 views

What is the total wing surface area of the A320?

I was trying to calculate the total area of an A320, and in this link I found the wing area and tail area. But here I read that the wing area is just the 2D projection of the wing. So if I wanted to ...
6
votes
2answers
906 views

What is an aileron bushing?

What is an aileron bushing,and what's its use?
0
votes
1answer
88 views

Is aerodynamic flutter speed dependent?

Is it possible for control surface flutter to occur at low Reynolds and low speed? If yes,why don't Ultralights have counter weights or tail sting mass to immune the control surfaces against flutter ...
1
vote
2answers
106 views

Is c.g rear or fore of wing leading edge?

This video states that the c.g of most non tapered airplane is 25%-30% of wing chord REAR of the leading edge.The aerodynamic center(a.c) of most wing is 25% rear of the leading edge ....Does this ...
5
votes
1answer
150 views

What is wing trammelling?

What is wing trammelling and how does it affect wing stability and performance?
4
votes
1answer
127 views

Is the shape of the Bell X-1 wing on Virgin Galactic's VSS Unity's artwork correct?

This answer to the Space SE question What do these patterns on Virgin Galactic's VSS Unity represent, and how are they applied? indicates that one of the aerospacecraft representations on the Unity is ...
0
votes
1answer
89 views

Do mono spar wings need compression strut(or ribs)?

Loyolksip Regarding airplane wings, are compression struts needed in a mono spar wing? Secondly, are anti drag and drag wires needed in a mono spar wings?
1
vote
0answers
89 views

How to calculate the shear force, and the bending and torsion moments on a wing?

I want to calculate the loads (shear force, bending and torsion moments). Assuming I have the force distribution along all the surfaces of the aircraft, my starting point is to consider the wing (and ...
1
vote
2answers
137 views

Are high lift wings bad for faster speeds

I notice a trend in many aircraft designs. If the aircraft was designed to go slowly but have shorter takeoffs/landings they use airfoils with a high lift. However for long endurance flights they use ...
4
votes
2answers
171 views

What is the purpose of thinner airfoils used near wing tips?

I know that a thicker airfoil at root will strengthen the root spar but what is the reason behind using thinner airfoils at the tip? Is it because thinner airfoils have higher stalling angles of ...
0
votes
4answers
268 views

Why do we not see propellers on swept wings or jet engines on straight wings? [closed]

Why are these configurations not observed often? The only time I see propellers are on straight wings or on the nose, while jet engines are always on swept wings or the tail. Why?
6
votes
1answer
381 views

What is the purpose of drag and anti drag wires?

What are drag and anti drag wires,and how important are they to the performance and strength of the wings of an airplane?
1
vote
1answer
118 views

What airfoil is used on the Lazair ultralight?

This is the airfoil of the famous Lazair ultralight. What is the name of this airfoil?
2
votes
1answer
338 views

Is it best to use a thick airfoil or an undercambered airfoil for slow speed flight?

The more the thickness,the more the frontal resistance,hence the more the drag a thick airfoil will produce. Under cambered can help increase lift without increasing the airfoil thickness , therefore ...
1
vote
2answers
119 views

Why flaps can deflect up to 25°+ without stalling the wings? [duplicate]

According to this graph,plain flaps have their highest Cl at about 2 and stalls at about 15°,my question is how then do airplane flaps reach 25°+ of delflection when this gragh clearly states that ...
1
vote
2answers
241 views

Would the Wright Flyer have flown better with thicker airfoils?

The Wright Flyer(s) flew with very little wing thickness,would they have flown higher, faster and longer if the wings had greater thickness? Secondly, how do thickness and camber affect a wing's ...
2
votes
2answers
114 views

Is there a flexible “cloth-like” material that can be used as “skin” for a non-conventional wing?

I am in the very early stages of playing with the idea of an ornithopter derived aircraft. The intention is to be able to scale the resulting aircraft, to passenger (or useful payload) carrying ...
2
votes
2answers
297 views

Is airfoil thickness proportional to drag coefficient?

Does increase in the thickness of a camber airfoil mean more drag will be produced? Why do slow flying planes have thick airfoils when it will just slow them down even more?
1
vote
2answers
156 views

How can I calculate CLmax for a wing with multiple airfoils?

How should I do the math to find the CLmax of a wing that has more than one airfoil, each with a different CLmax? I am trying to make a model with a portion of the wing tip with a airfoil that has a ...
2
votes
2answers
107 views

Is the lift produced by a wing with a 10° flap equal to the lift created by a wing with 10° AOA but with no flap?

After reading this article I would like to know if the lift produced by a wing with a 10° flap is equal to the lift created by a wing with 10° AOA but with no flap?
1
vote
0answers
50 views

What does “lower flatness” mean in airfoil terminology?

What does lower flatness mean in these parameters of a Glenn Martin airfoil?
4
votes
1answer
177 views

Were there any folding wing biplanes?

Given that several nations had operational carriers by 1920 and biplanes were still in military service, were there any folding wing biplanes? Wikipedia: United States first purpose built aircraft ...
1
vote
1answer
166 views

What creates most drag during flight: fuselage or wings?

From pic 1, I know the drag line is below the thrust line, but I am puzzled about where the drag line is in pic 2? Secondly, what creates most of the drag in flight, is it the fuselage or the wings?
2
votes
2answers
161 views

Is having the tailplane at the wings backwash a design flaw?

Most airliners have their tailplane below or above the backwash of the wings, so is placing the tail control surfaces directly in the backwash of the wing a disadvantage?
1
vote
1answer
90 views

What exactly are “clipped” wings?

What exactly does "clipped wing" mean? Been having a rather heated debate. My understanding is that clipped means the tips were removed after manufacture. The other party claims that if it was ...