Explain how to read the following diagram, again assuming you are trying to instruct someone...

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Explain how to read the following diagram, again assuming you are trying to instruct someone unfamiliar with the material. You can utilize annotations in the diagram. The choice of instructional style...

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Explain how to read the following diagram, again assuming you are trying to instruct someone unfamiliar with the material. You can utilize annotations in the diagram. The choice of instructional style is yours, but make sure to highlight all main points for understanding the presented information.

As a minimum, address the following:

- Stall conditions (e.g., CL_max; Associated AOA)

- Glide conditions (e.g., associated, AOA, resultant glide ratio)

- L/D (e.g., value, associated AOA)

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Answered Same Day Dec 27, 2021

David · Accepted Answer

As the amount of lift varies with the angle of attack, so too does the drag. Hence drag is the 
price we pay for lift. Thus, although it is desirable to obtain as much lift as possible from a 
wing, this cannot be done without increasing the drag. It is therefore necessary to find the 
best compromise. The lift and drag of an airfoil depend not only on the angle of attack, but 
also upon: 
 The shape of the airfoil 
 The plan area of the airfoil (or wing area) S . 
 The square of the velocity (or true airspeed) 2V . 
 The density of the air  . 
Hence the lift (L) and drag (D) of an airfoil can be expressed as follows: 
2
2
2
2
L
D
C V S
L
C V S
D




 
Where, CL and CD represent the lift coefficient and drag coefficient respectively. They 
depend on the shape of the airfoil and will alter with changes in the angle of attack and other 
wing appurtenances.

Explain how to read the following diagram, again assuming you are trying to instruct someone unfamiliar with the material. You can utilize annotations in the diagram. The choice of instructional style...

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