Consider an airplane (mass m = 120000 kg, wing surface area S = 280 m^2, wing sp
ID: 1768875 • Letter: C
Question
Consider an airplane (mass m = 120000 kg, wing surface area S = 280 m^2, wing span
b = 48 m) travelling at an altitude of 11 km at a speed of V? = 850 kph.
a) Determine the lift per unit span, L.
b) How is the theorem linking lift and circulation commonly called?
c) Determine the circulation acting around the wing to generate L.
d) Assume that the wing is replaced by a cylinder with radius r = 1 m. Given the circulation
you calculated in b), how big is the angular velocity in the vortex?
e) Given V? and the circulation, what is the static pressure at ? = 0
Explanation / Answer
Lockheed model 382 USAF assignment C-130b/H and model 382e business assignment L-100-20 "Hercules"
Sort: Medium/long go battle transport
Starting point: USA
Comparable flying machine: Belfast, A 12 Cub
Wings: Cantilever high-wing monoplane. Wing segment NACA 64a318 at root, NACA 64a412 at tip. Dihedral 2