A tiny metal flap on the leading edge of the port wing which lifts up when the angle of attack increases – very, very basic but extremely important device – no rocket science here!
That reminds me of something my AGK/Nav. instructor was telling us the other night - when he was learning to fly in the South African air force, they were in a Tiger Moth, and the airspeed indicator was out on the wing, just simply a metal flap that went flatter against the wing the faster they got, and he had to read off the speed from a scale on the bottom!
Pretty basic to what we have now, eh, (but I suppose it worked...!)
Great summary again, Mazzy. You'll love having this to look back on once you're let loose on your own!
(it's funny, those acronyms sure stick with you... I still remember HASEL from my school days... at least, I think it was hasel!!!
)
Sky