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 working completely. 

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 during extension/retraction. 

The gear has to rotate by a few degrees during retraction to better fit into the minimal space left within the wing. More information on Aviation CAD Design