AMTStandards.orgAviation maintenance

Drag (helicopter rotor blade movement)

Fore-and-aft movement of the tip of a helicopter rotor blade in its plane of rotation.

Aviation Maintenance Technician Handbook — Airframe, p. G-13

Also defined in 2 more sources

An aerodynamic force on a body acting parallel and opposite to relative wind.

Helicopter Flying Handbook, p. G-3

The net aerodynamic force parallel to the relative wind, usually the sum of two components: induced drag and parasite drag.

Pilot's Handbook of Aeronautical Knowledge, p. G-10