11.1 Sweepback Flashcards
How can you reduce the adverse effects of transonic flight?
if the shock wave induced separation and the intensity of the shock waves can be delayed and reduced, the performance can be improved
How are wings specifically designed?
they are designed specifically so that they are strong enough to carry weight and more importantly they often house the fuel tanks
How can you reduce the profile thickness and delay the critical Mach number?
you can do it by sweeping the wing
When the wing has a sweep angle does it have the same absolute thickness?
it has the same absolute thickness but with the longer chord
V is made up of two component direction and velocities what are these?
one of these travel chordwise at right angles, and the other travels spanwise
At what angle does a normal shockwave form?
90 degrees
What does a swept wing help with?
reduce the critical Mach number, they also help to reduce the overall frontal area of the aircraft, reduce the profile drag, and improve the lateral stability
What are the disadvantages of swept wing?
the increased span wise flow which can cause stagnation in the boundary layer and wing tip stall
What is the risk of the wing tip stalling first?
causes the centre of pressure to move forward
