02 The Forces Acting on an Aeroplane Flashcards
1
Q
Forces on an AC?
A
2
Q
Where does weight act from?
A
3
Q
Total reaction?
A
Vector formed for aerodynamic lift and drag which acts through the centre of pressure.
4
Q
Equation for lift?
A
5
Q
Parasite drag?
A
Proportional to IAS^2
Parasite drag = 1/2 p V^2 S Cdp
6
Q
Induced Drag?
A
Proportional to 1/IAS^2
Induced drag = 1/2 p V^2 S Cdi
7
Q
Relationship between Cdi and Cl?
A
Cdi = CL^2 / pi x aspect ratio
8
Q
Relationship between Cl and V?
A
Cl ~ 1/ V^2
9
Q
Total Drag Curve
A
Vmd ; The speed where the total drag is least is known as the minimum drag speed.
10
Q
The effect of increasing weight on drag?
A
Higher corresponding Vmd.
W = L ~ Vmd^2
11
Q
IAS and TAS?
A
TAS = V
IAS = 1/2 p V^2
12
Q
The effect of speed brakes, flaps and landing gear on drag?
A
