Wide-speed-range multi-working-medium efficacy matching combined power system

Abstract

The invention provides a wide-speed-range multi-working-medium efficacy matching combined power system, belongs to the technical field of power devices, and comprises a cylinder pipeline and a power device, wherein the power device is arranged in the cylinder pipeline, one end of the cylinder pipeline is in pipeline connection with an air inlet pipeline, and the other end of the cylinder pipeline is connected with a spray pipe; the power device comprises a turbine power engine, a powder rocket engine and a scramjet engine which are sequentially arranged in the gas conveying direction; a pre-cooling pipeline is arranged in the air inlet pipeline, and the tail end of the pre-cooling pipeline extends into the barrel body pipeline to contain the turbine power engine into the pre-cooling pipeline; and the part of the pre-cooling pipeline located in the air inlet pipe has a built-in drainage piece inside the pipe body. Characteristics of all engines are fully utilized, full-flow-channel integrated compact design of the power system is achieved with the minimum mass cost and space cost, wide-range stable and reliable work of the power system is achieved, meanwhile, different types of fuel of all the engines are combined, and the characteristic of multiple working media is realized.

Description

technical field [0001] The invention belongs to the technical field of power devices, and in particular relates to a multi-working medium efficiency matching combined power system in a wide speed range. Background technique [0002] Ramjet is the preferred propulsion system for hypersonic vehicles such as missiles. Ramjet is currently divided into liquid fuel ramjet, solid fuel ramjet and solid rocket ramjet. The technology of the liquid fuel ramjet engine is mature, the fuel flow adjustment is relatively easy, the specific impulse is high, and the engine combustion efficiency is high. The solid fuel ramjet has the advantages of high specific impulse, good performance in high-speed flight, small size, low cost and simple structure. The solid rocket ramjet has good reliability, easy maintenance and use, and short combat response time, so it is more suitable for airborne launch. Accordingly, these engines also have some disadvantages. The liquid fuel ramjet has disadvantage...

AI Technical Summary

Problems solved by technology

The current combined power design is mostly based on the idea of ​​direct combination and binding of structure and function. On the basis of the individual work of various engines, only mechanical combination is carried out from the structure, and there is a lack of deep integration between the working cycle parameters of various engines and fuel, work, etc. It is difficult to achieve the ideal work efficiency due to the full utilization of quality

This kind of design idea is difficult to realize in engineering. The structural design of movable and thermal components, the combination of various engine units (modals) and working systems, and the layout design of aircraft body and engine are all facing great challenges.

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