Novel rotating shaft structure of swinging rocket engine

Abstract

The invention discloses a novel rotating shaft structure of a swinging rocket engine. The novel rotating shaft structure comprises a rotating shaft, a shaft cover plate and a shaft nozzle, the lower end of the rotating shaft is connected with the shaft cover plate in a welded mode to form a propellant liquid collecting cavity inside the rotating shaft, a key connecting port is formed in the upperend of the rotating shaft and used for being connected with a motor for providing torque, a bearing connecting port is formed below the upper key connecting port, two sections of sealing surfaces arearranged below the bearing connecting port, the two sections of sealing surfaces are connected with a dynamic sealing structure, and a plurality of propellant inlets are formed between the two sections of sealing surfaces; and the rotating shaft is connected with the shaft nozzle in a welded mode, and a propellant flows into the propellant liquid collecting cavity from the propellant inlets and flows out through the shaft nozzle. According to the novel rotating shaft structure of the swinging rocket engine, the fitting degree between the rotating shaft structure and the convergence section ofan engine combustion chamber is high so that the welding quality can be improved; the rotating shaft structure has a propellant flowing channel function at the same time, so that the structure of theengine is compact, and the appearance is attractive; and for the engine, swing hoses can be omitted, and all adopts metal hard pipes so that the engine can be provided with a heat control device conveniently.

Description

technical field [0001] The invention relates to the technical field of spacecraft propulsion systems, in particular to a novel rotating shaft structure of a swingable rocket engine. Background technique [0002] With the continuous development of the aerospace industry, the demand for the development of multifunctional rocket engines for launch vehicles, satellites and other spacecraft is increasing day by day. Swingable engines are an important development direction of multifunctional rocket engines. According to the requirements of orbit transfer or attitude control, the oscillating engine can swing in the corresponding direction, so that the thrust vector can be deflected and the required control force can be generated. [0003] The initial rocket engines were all fixed structural layouts and did not have a swing function. With the advancement of engine technology, swing engines with surrounding metal hose layouts are widely used. Swing hoses are installed on the propell...

AI Technical Summary

Problems solved by technology

[0004] Looking at the current state of technology at home and abroad, the shaft of the swingable rocket engine only has the function of structural support and transmission of swing torque, which is mainly used in swing engines with a surrounding metal hose layout, but cannot be applied to swingable rocket engines with a sleeve-type metal hard tube layout. engine

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