Here's a couple of questions for all you aerodynamicists out there.

1. What (control input or surface) makes an aircraft go up and down? Why/how?

2. What (control input or surface) controls aircraft speed? Why/how?

I have my own theory, I just want to see what the experts say, to satisfy a "discussion" I am having with "Mr. Airodynamics(sic) 101" on another board.

Thanks,

Rick