A ramjet nozzle suitable for a wide range of Mach numbers

A ramjet and Mach number technology, applied in ramjet engines, combined engines, mechanical equipment, etc., to reduce fuel consumption, optimize fuel injection schemes, and reduce complexity

Active Publication Date: 2022-07-29
NAT UNIV OF DEFENSE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are currently no suitable nozzles that meet the design requirements of this aspect of the ramjet

Method used

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  • A ramjet nozzle suitable for a wide range of Mach numbers
  • A ramjet nozzle suitable for a wide range of Mach numbers
  • A ramjet nozzle suitable for a wide range of Mach numbers

Examples

Experimental program
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Embodiment Construction

[0042] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0043] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relationship between various components under a certain posture (as shown in the accompanying drawings). The relative positional relationship, the movement situation, etc., if the specific posture changes, the directional indication also changes accordingl...

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Abstract

The invention discloses a ramjet nozzle suitable for a wide Mach number range, comprising an oil supply pipe and a first casing, wherein a first cavity and a second cavity which are not communicated with each other are arranged inside the first shell; The first housing is provided with a first fuel inlet and a first injection port communicated with the first cavity, and a second fuel inlet and a second injection port communicated with the second cavity. The diameter of the injection port is larger than that of the second injection port; the oil supply pipe is connected to the first casing through a communication mechanism. By controlling the communication mechanism to switch between the first form, the second form and the third form, the same fuel supply is realized, and the mutual switching between different injection depths and injection quantities is realized, which reduces the setting of the ramjet fuel pipeline. At the same time, the fuel injection scheme is optimized, so that the engine can obtain better fuel supply, better combustion effect, improved fuel utilization rate, and reduced fuel consumption.

Description

technical field [0001] The invention relates to the technical field of ramjet injection, in particular to a ramjet nozzle suitable for a wide Mach number range. Background technique [0002] Due to its simple structure, high efficiency and no rotating parts, ramjets have been widely used in high-speed aircraft. However, after the ramjet's flight range has been continuously expanded, conventional engine nozzles can no longer meet the needs of the engine. In the past, multiple pipelines were set up on the engine and used in different working conditions, which made the engine oil circuit more and more complicated, and at the same time, there were contradictions in fuel injection in some key sensitive areas. When the injection requirements of the low Mach number segment are met, the fuel nozzle of the high Mach number segment cannot be set there. During the flight stage of high and low Mach numbers, due to the obvious difference between the combustion mode of the combustion ch...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02K7/20
CPCF02K7/20
Inventor 顾瑞孙明波李佩波蔡尊姚轶智
Owner NAT UNIV OF DEFENSE TECH
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