Aviation
VLxG When did military forces begin using hot air balloons for reconnaissance purposes?
VgWl Which force counters thrust?
D0yO Do large airliners contribute to cloud formation?
bjeE The B-52 is a famous example of which type of aircraft?
bMkK If RPMs are too high, which part of the aircraft is affected?
D5xk Which term indicates the direction a plane is pointed?
VBB7 Where would you find the "jet stream"?
3Xlg Was the world’s first aviation fatality one of the Wright brothers?
D2K7 Which term refers to the tilt of a plane’s nose?
D17B "ROC" refers to which aspect of flight?