Maybe

why as you increase the chord length of an aerofoil, the Lift-Drag ratio increases at low speed? (while the parameters for all still remain the same(eg: same thickness, same AOA).

i thought that as you increase chord length, you will affect the aspect ratio and thus increase drag. Even so, why does the Lift-Drag ratio still increase?

How does aerofoil at the wing tip affect the lift?

How does aerofoil at wing root affect the lift?

For a swept wing why does the wing root aerofoil seems to be bigger than wing tip aerofoil?

thanks for ur answers!

FCU-Fuel control unit

is slats and flaps considered primary control surface or secondary?

for wiki it shows that flaps and slats are under secondary contorl surfaces however based on this link:

http://www2.cs.uidaho.edu/~krings/CS449/Notes.S07/...

, it shows that flaps and slats are in primary control surfaces.

can anyone clarify my doubts? thanks!

I would like to know if the flight control surfaces in boeing 777 series are all the same. if not can anyone tell me the flight control surfaces for boeing 777-300er

picture will be helpful

thanks!

Ambient condition -> ambient temperature and pressure.

i am 17 , male. well this is abit frustrating, i need to wait for about 3-5mins and above for the urine to come out. sometimes it wont even come out. i dont feel any pain while urinating and before urination

i went to the doctor and get check up. the doctor tested my urine and its ok. checked that my bladder has no infection at all. the doc say i am OK and has given me antibiotic. but i feel no difference after consuming it for few days.

whats the problem in me? ? ?

(this incident occured for 3days already and its not fixed yet) can any1 help?

my mum say that i am too anxious...but i don think its becuz of that..i have no problem last time even tho i am anxious? Moreover i have nothing to worry about (exams over,results out, whats there to tihnk about)