Full floating turbine driven compressing ejector

Abstract

The invention discloses a full-floating pneumatic compressed catapult. An outer housing of the catapult consists of a left cylinder body, a right cylinder body and a back base, the two ends of the left cylinder body and the right cylinder body are respectively provided with a left cylinder cover and a right cylinder cover, a left piston and a right piston are respectively arranged in the left cylinder body and the right cylinder body, the left piston and the right piston are connected with each other by a suspension, a cavity between the left piston and the right piston forms an ejection cavity, an ejection mechanism consists of elastic swing rods, a rod base, a left ejection rod and a right ejection rod, and the left ejection rod and the right ejection rod are fixedly connected on the two ends of the rod base; the rod base is arranged in the ejection cavity, the elastic swing rods have at least one set of the rods, the set of the elastic swing rods consists of a plurality of the elastic swing rods which are circumferentially distributed along the central axis of the outer housing, and the two ends of each elastic swing rod are respectively articulated on the walls of a support steel ring and the rod base by a big knuckle spindle and a small knuckle spindle. As a fully enclosed cylinder is adopted, the airtightness is good and the heat utilization efficiency is high; as the structure of spring energy storage is adopted, the force at the time of ejection is very great, thus achieving the purpose of causing a heavy-duty aircraft to instantly lift off.

Description

technical field [0001] The invention relates to an aircraft steam catapult used on an aircraft carrier, in particular to a pneumatic compression catapult. Background technique [0002] If an airplane wants to take off from an aircraft carrier, it must rely on the thrust generated by a steam catapult. The steam catapult was invented by the British, but so far, only the Americans have produced a steam catapult that can be used in actual combat. The main body of the steam catapult is a large reciprocating cylinder, which converts steam energy into kinetic energy for ejection. High-temperature and high-pressure steam is produced by the ship's propulsion boiler and stored in the pressure storage tank. The input and pressure regulation of the steam in the pressure storage tank are controlled by valves. The steam catapult currently in service on the US aircraft carrier uses a slotted cylinder with a piston inside the cylinder. The piston needs to pass through the cylinder wall to ...

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Problems solved by technology

[0003] The first is the problem of the expansion of the cylinder seam by the pressure in the cylinder. In order to prevent the expansion of the cylinder seam by the pressure in the cylinder, the cylinder wall must be made very thick, so the volume is large and very heavy. According to the public information, every steam engine currently in service The total weight of the catapult is close to 500 tons

[0004] The second is the problem of deformation of the cylinder itself after being heated. The open cylinder has to bear the pressure generated by high temperature and high pressure steam. Since there are openings on the cylinder wall, the force characteristics of the open cylinder are very poor, so it is quite difficult to keep it from deforming.

Old-fashioned catapults use rubber bands set on both sides of the cylinder opening to form a "zipper" seal, while active catapults use a U-shaped sealing strip to fill the opening of the cylinder. No matter which method is used, the maintenance cost is high. , the U-shaped sealing strip is frequently replaced and very troublesome, and has high requirements on the material; although it is no problem to meet the needs of the aircraft to take off, it is impossible to achieve the same degree of sealing as the cylinder of the steam engine, so every time it is ejected, it will A stream of high-temperature white smoke diffused from below the deck. This was leaked high-temperature, high-pressure steam, which not only consumed a lot of fresh water, but also wasted a lot of energy.

Formally due to the above problems, the U.S. Navy is actively developing a more reliable steam catapult, but it has not been successful yet

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