Retractable main landing
gear for light aircraft
Conceptual design for retractable landing gear on a light aircraft.
Gear has been designed to be retracted using a single linear actuator,
with a free fall 'emergency' extension should electrical power fail. The
system uses a cable and gas springs to unlock the up locks, and the gear
motor and a small hand activated winch provides a back up to fully extend
and lock the gear if aerodynamic loads prevent the free fall system from
Visual tabs, consisting of mechanical indicators are exposed above
the wing when the gear is fully locked down.
Gear doors are mechanically driven to automatically follow the gear
The gear has to rotate by a few degrees during retraction to better
fit into the minimal space left within the wing.
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