I got all of them right, in my own way. 1 and 3 were by the book correct, and I did what GK did with the Not Equal to, for the rectangle, I used the bottom border of the answer area and drew the other 3 lines.
There's a clip somewhere with what I think are British soldiers hunkered down in some ditches calling in A-10 air support that gets a little too close and spoils their jolly mood.
This guy performed at the last airshow I went to at Seymour Johnson AFB... very cool display that guy does things in a Piper Cub that I didn't know were possible.
the whole point here is to defeat a condition called "retreating blade stall" that limits the top speed of a helicopter.
A helicopter's top forward speed can't approach the speed at which the retreating side of the rotor would cancel each other out... thus making all the lift come from the advancing side of the rotor and roll the aircraft over.
By making wings they introduce a new source of lift on both sides during fast forward flight.
Toss me in a cell and throw away the key then... I'm a violator.
Blue Moon w/ orange is the best after yardwork.
But any other occasion calls for a Newcastle.