Definition
A mechanical device consisting of a drum or spool wound with cable, rope, or wire, turned by a hand crank, electric motor, or engine, used to pull, lift, or tow a load. In aviation, winches are commonly used to launch gliders into the air, retrieve aircraft, and move heavy components during maintenance.
Plain English
A spool with a strong cable wrapped around it. When the spool is turned, the cable winds in and pulls whatever is attached to the other end.
Context Anchor
Seen in glider operations, helicopter hoist operations, maintenance areas, and ground handling around aircraft.
Derivation
From the Old English 'wince', meaning a roller or pulley. The word has always referred to a turning device used to wind something in.
Why Pilots Care
Winch launches give glider pilots an efficient, low-cost way to get airborne without a tow plane, but require precise speed and attitude control to avoid stalls or cable issues.
Intuition Check
A winch is not simply any towing vehicle or motor. The key feature is the cable, rope, or chain being wound on a drum to create the pulling force.
Example Sentence 1
The glider was launched by winch, climbing steeply until the cable released at about 1,500 feet.
Example Sentence 2
After the cable broke during the winch launch, the pilot made a safe return to the field.