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Multi-stage charging solid fuel ramjet engine

A ramjet and solid fuel technology, applied in ramjet engines, mechanical equipment, etc., can solve problems such as poor matching of flight height and flight speed, and single parameter change law

Pending Publication Date: 2021-04-16
BEIJING POWER MACHINERY INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The engine gas flow rate, engine margin, engine thrust and other parameters of a single type of charge have a single change rule, and the matching between the engine performance and the flight altitude and flight speed is poor, and there is a contradiction between high performance and high margin

Method used

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  • Multi-stage charging solid fuel ramjet engine
  • Multi-stage charging solid fuel ramjet engine
  • Multi-stage charging solid fuel ramjet engine

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Embodiment Construction

[0018] In order to enable those skilled in the art to better understand the solutions of the present application, the technical solutions of the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0019] see figure 2 , which is a structural schematic diagram of a multi-stage charge solid fuel ramjet provided by the present invention. A multi-stage charge solid fuel ramjet engine, comprising an air inlet 1, a charge combustion chamber 2, a supplementary combustion chamber 3 and a nozzle 4, and the charge combustion chamber 2 is cast against the wall with mutual Cascaded two-stage charges 5, wherein the burning rate, geometric size, pressure index, calorific value, density and drug type of the first-stage charge 6 and the second-stage charge 7 are not completely the same, and can be determined according to the overall index of the shell It is required to carry ou...

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Abstract

The invention provides a multi-stage charging solid fuel ramjet engine. According to the multi-stage charging solid fuel ramjet engine, through multi-stage charging performance matching, different geometric dimensions, burning rates and other parameters are selected for each stage of charging, and the problem that the matching between the engine performance and the flight height and flight speed is poor is solved; self-adaptive work of the solid fuel ramjet engine in a large airspace and a wide speed domain is achieved, and the performance of the engine is greatly improved; the use conditions of the engine are widened, and a feasible technical way is provided for future ultra-long range ramjet extended-range projectiles.

Description

technical field [0001] The invention belongs to the technical field of solid fuel ramjet engines, in particular to a multi-stage charge solid fuel ramjet engine. Background technique [0002] The solid fuel ramjet (abbreviated as SFRJ) is a ramjet in which the incoming air reacts directly with the solid charge poured against the wall to form primary gas, and the primary gas is recombusted in the afterburner chamber. SFRJ has the advantages of high specific impulse, high reliability, low cost and certain performance self-adjustment ability, etc., and has a good application prospect in the range extension of artillery shells. [0003] Such as figure 1 As shown in Fig. 1, after the cannon is fired, the ramjet works in succession until the cannonball rises to a high altitude, and the engine works. The working height range of the gun-fired solid fuel ramjet is 0km~10km, and the working speed range is Ma2.2~Ma3.5. As the shell climbs, the height of the engine increases, the spe...

Claims

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Application Information

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IPC IPC(8): F02K7/10
Inventor 高鲲鹏李海波常煜辉
Owner BEIJING POWER MACHINERY INST
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