
1) VTOL aircraft
Found on
https://www.crosswordclues.com/clue/powered-lift

Powered lift or powered-lift refers to a type of aircraft that can take off and land vertically and functions differently from a rotorcraft in horizontal flight. The term is particularly used by the United States Federal Aviation Administration for classification purposes. Powered-lift is one of the seven categories of aircraft designated by the F...
Found on
http://en.wikipedia.org/wiki/Powered_lift

(from the article `helicopter`) Powered-lift aircraft can change the direction of their propulsion system`s thrust in flight. They characteristically have the airframe and ...
Found on
http://www.britannica.com/eb/a-z/p/104
No exact match found.