Parametrical Investigation of Transverse Injection in a Dual-Bell Nozzle During Altitude-Varying Conditions

IF 1.7 4区工程技术 Q2 ENGINEERING, AEROSPACE

Journal of Propulsion and Power Pub Date : 2023-08-02 DOI:10.2514/1.b39077

Brian Legros, L. Léger, A. Kourta, A. Chpoun, M. Sellam

引用次数: 0

Abstract

The dual-bell nozzle (DBN) is a rocket nozzle concept that could provide a substantial payload gain. The present paper focuses on the impact of radial secondary injection on DBN behavior during its ascent and descent in the atmosphere. The influence of the secondary injection settling chamber (cavity) volume is discussed. The positive influence of the cavity volume on the DBN behavior during transition phases has been exposed, and its effects during retransition were shown to be negligible. The use of secondary injection allowed the transition nozzle pressure ratio to be increased by nearly 24%, and the lateral forces were reduced to less than 1% of the nozzle thrust. A first approach regarding secondary injection optimization is finally proposed.

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高度变化条件下双钟形喷嘴横向喷射的参数化研究

双钟形喷嘴(DBN)是一种火箭喷嘴概念，可以提供可观的有效载荷增益。本文主要研究径向二次喷射对DBN在大气中上升和下降过程的影响。讨论了二次注射沉降室(腔)体积的影响。在转变阶段，空腔体积对DBN行为的积极影响已经暴露出来，而在再转变期间，它的影响被证明是可以忽略不计的。二次喷射的使用使过渡喷嘴的压力比提高了近24%，横向力降低到喷嘴推力的1%以下。最后提出了二次注入优化的第一种方法。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Propulsion and Power 工程技术-工程：宇航

CiteScore

4.20

自引率

21.10%

发文量

审稿时长

6.5 months

期刊介绍： This Journal is devoted to the advancement of the science and technology of aerospace propulsion and power through the dissemination of original archival papers contributing to advancements in airbreathing, electric, and advanced propulsion; solid and liquid rockets; fuels and propellants; power generation and conversion for aerospace vehicles; and the application of aerospace science and technology to terrestrial energy devices and systems. It is intended to provide readers of the Journal, with primary interests in propulsion and power, access to papers spanning the range from research through development to applications. Papers in these disciplines and the sciences of combustion, fluid mechanics, and solid mechanics as directly related to propulsion and power are solicited.