Rotors running refuelling (usually shortened to RRR and pronounced Triple-Romeo) is the act of refuelling a
helicopter
A helicopter is a type of rotorcraft in which lift and thrust are supplied by horizontally spinning rotors. This allows the helicopter to take off and land vertically, to hover, and to fly forward, backward and laterally. These attributes ...
, while the helicopter keeps rotors (and thus engines) running. Unlike
Helicopter in-flight refuelling, RRR can only be performed on ships or
helipad
A helipad is a landing area or platform for helicopters and powered lift aircraft.
While helicopters and powered lift aircraft are able to operate on a variety of relatively flat surfaces, a fabricated helipad provides a clearly marked hard s ...
s, which can support the given helicopter.
Air refueling
{{military-stub