Ejector with enclosed cylinder structure

Abstract

The invention discloses an enclosed cylinder structure catapult, mainly consisting of an ejection cylinder, a piston, a cylinder head, a telescopic sealing device, a high-strength steel cable and a reciprocating vehicle. Wherein, the ejection cylinder is in enclosed pipe-shaped structure consisting of a plurality of cylinder sections which are connected with flanges; a cylinder head is arranged at the starting end of the ejection cylinder where an air inlet valve and a steel cable hole is arranged; the telescopic sealing device consists of sleeves telescopically sleeved together from small internal diameter to large internal diameter; the head end of the most-inner sleeve is arranged on the piston and the tail of the most-outer sleeve extends out of the cylinder through the steel cable hole on the cylinder head. One end of the high strength steel cable passes through the telescopic sealing device and is connected with the piston in the cylinder by the steel cable hole in the cylinder head; the other end of the high strength steel cable is connected with the reciprocating vehicle; the invention adopts the enclosed cylinder, the high strength steel cable and the telescopic sealing device, etc., therefore, the invention has the advantages of high strength, light structural weight, simple sealing, high reliability and low production cost.

Description

Technical field [0001] The invention relates to a cylinder structure ejection technology, in particular to a closed cylinder structure ejector. Background technique [0002] Cylinder structure catapults are used for fixed-wing aircraft to catapult to accelerate from a stationary state to above the take-off speed. At present, the only practical, reliable, high-energy catapult in the world is the steam catapult made in the United States. The steam catapult can convert high-pressure steam energy into the kinetic energy of a heavy-duty fixed-wing aircraft. [0003] Each steam catapult has two rows of left and right ejection cylinders installed in parallel. Each row of ejection cylinders is composed of multiple ejection cylinders whose ends are connected by flanges. The number of sections of the ejection cylinder is determined by the total length of the steam ejector. [0004] The steam catapult uses an open cylinder. The ejection cylinder is grooved in the longitudinal direction from...

AI Technical Summary

Problems solved by technology

In order to balance the force, it is necessary to use double-row, parallel-arranged open cylinders, which increases the structural weight and reduces the reliability.

[0009] 2. It is difficult to seal the open ejection cylinder and the safety is poor

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