Abstract: A roof top snow removing apparatus includes a plowing unit configure to plow snow disposed upon a roof top, a motor unit coupled to and providing a motive force for the plowing unit, a track system to guide the motor unit about the roof top, and a controller to control the motor unit based on received input from a user.

Abstract: An apparatus and method to assist in landing an aircraft without functional aircraft landing gear. The apparatus includes a runway with a low friction upper surface supporting the aircraft's weight and providing a low friction surface on which the aircraft slides until the aircraft comes to a stop. The apparatus also includes: wing receptacles that attach to the aircraft wings, resistance machines providing force to the wing receptacles in order to decelerate the aircraft, and cables connecting the resistance machines to the wing receptacles. A lubricant can be applied to the runway to decrease friction. The method includes the aircraft touching down on the low friction runway. The aircraft's momentum carries the aircraft wings into the wing receptacles that attach to the wings, and resistance machines apply a declaration force to the wing receptacles. The force is adjusted such that the aircraft stops within a safe distance.

Abstract: A roof top snow removing apparatus includes a plowing unit configure to plow snow disposed upon a roof top, a motor unit coupled to and providing a motive force for the plowing unit, a track system to guide the motor unit about the roof top, and a controller to control the motor unit based on received input from a user.