2 results about "Catapult" patented technology

The invention relates to a horizontal tail of a catapult launched glider which can change angles during flight. An horizontal tail which can change angles means that the horizontal tail is movable, a movable horizontal tail is achieved by sandwich a slow rebound means between the horizontal tail and the fuselage, the slow rebound means could be a memory foam or a compressible plastic telescopic tube, their properties is delayed restitution when the pressure acting thereon disappears, so the horizontal tail on top of the slow rebound foam is boosted and maintained at a negative angle with the longitudinal axis of the fuselage when there is no pressure acting on it, the compressible slow rebound means allows the horizontal tail be pressed downward from negative angle to zero angle or even to positive angle when squeeze the tail portion of the glider by fingers before launch, the horizontal tail is maintained at zero angle or positive angle at that time, after launch, the horizontal tail moves towards negative angle with a slow speed which is controlled by the expansion rate of the slow rebound means, the glider travels in the sky with a nearly straight upward climb first, then go down with a smooth gliding and landing as the horizontal tail has been propped up by the slow rebound means. Another play mode is by griping the sides of the fuselage without touching the horizontal tail, the glider will fly in circles.

The invention relates to an aircraft catapult utilizing hydraulic power and a hinge connecting rod structure. The catapult is composed of a hydraulic power part, a mechanical transmission part and an engine base, wherein a hydraulic transmission part is composed of five high-pressure oil cylinders; a hinge structure is adopted among all the connecting rods (5) of the hinge connecting rod structure; a guide rod (8) is transversely arranged in front of the engine base (1), and the two ends of the guide rod (8) are respectively provided with a hinge lug (9) which can slide along the guide rod (8); and the five high-pressure oil cylinders drive the hinge connecting rod structure to catapult an aircraft. The catapult of the invention has small volume, small occupied naval vessel space and high efficiency, and provides ideal driving force and ejection force for launching various aircrafts on aircraft carriers; the thrust is large, thus providing possibility of launching heavy aircrafts on the aircraft carriers; and the catapult has simple process and low construction cost, and does not consume invaluable fresh water resources for naval vessels sailing at sea.