A Review of Throttling Technology Development for Large-Thrust Liquid Rocket Engines

• 作者: LI Bin ZHANG Ruiwen ZHANG Miao WANG Haiyan LI Chunhong WANG Kai
• 来源期刊: 中国航天（英文版）
• 年，卷（期）: 2021,（2）
• 所属期刊栏目: NEW GENERATION MEDIUM-LIFT LAUNCH VEHICLE—LM-8
• 页码范围: 14-24
• 页数: 11页
• 语种: 英文
• DOI: 10.3969/j.issn.1671-0940.2021.02.002

摘要

Throttling of large-thrust liquid rocket engines,which can improve mission adaptability of a carrier rocket,reduce risk and facilitate rocket recovery,is a key technology for current and future space development.This paper summarizes the state of the art and trends of throttling technology for large-thrust liquid rocket engines at home and abroad.According to the working principles of propulsion for rocket engines,throttling the propellant flow rate is a major way of adjusting thrust,and regulation devices along with adjustable injectors are primary measures of throttling propellant flow rates.This paper clarifies the working principles of typical regulation devices and adjustable injectors,introduces the regulation schemes of typical large-thrust engines such as YF-100,RD-170,and SSME,and summarizes the main characteristics of current throttleable large-thrust engines.Finally,critical technologies and development trends of throttling are discussed,including combustion stability and reliable cooling of thrust chambers at low thrust levels,turbopump stability,and stable regulation and precise control in a wide range of operating conditions.