HELICOPTER: The American Sign Language (ASL) sign for "helicopter"

 

This variation uses a "classifier three handshape." (CL:3)
Stick the palm of your right "five hand" on top of the tip of the thumb of your left CL:3 hand.
Flutter the dominant hand from the wrist, (the fingers do not individually move up and down but rather the whole hand flutters) representing the whirling blades of the helicopter.

Sample sentence: SOMEDAY I WANT A HELICOPTER or ROCKET.

HELICOPTER (Version 2)
Another popular way to sign "helicopter" is to flutter a "5 hand" on top of an index finger:

Sample sentence: WISH YOURSELF HAVE HELICOPTER YOU?

One way to show a HELICOPTER flying away is:

Notes: 

See: AIRPLANE
FLY

ROCKET