KEY ISSUES OF CREATING A CLOSED CYCLE LRE WITH DEEP THRUST THROTTLING

Paper number

IAC-14,C4,P,30,x21543

Author

Mr. Volodymyr Shulga, Yuzhnoye State Design Office, Ukraine

Coauthor

Mr. Oleksandr Prokopchuk, Ukraine

Coauthor

Mr. Alexandr Dibrivny, Yuzhnoye State Design Office, Ukraine

Year

2014

Abstract

Creating liquid rocket engines with deep thrust throttling (to 10% of main mode thrust) is one of the pressing tasks nowadays. These LREs will first of all find their application in landing-takeoff module propulsion systems. Additionally LRE throttling mode may be used to provide soft landing of reusable first stages of launch vehicles. 
Taking into account that the closed cycle turbopump fed LRE design is currently mastered and has reached a high reliability level, allowing to substantially increase the mass-performance characteristics of the system, development of such LREs with deep thrust throttling becomes the pressing tasks. Yuzhnoye SDO specialists have earlier developed a similar RD857 engine with 14 tf thrust for the second stage of intercontinental ballistic missile 8K99.
The paper presents main technical solutions, allowing to provide ten times throttling of a closed cycle LRE.

Abstract document

IAC-14,C4,P,30,x21543.brief.pdf

Manuscript document

IAC-14,C4,P,30,x21543.pdf (🔒 authorized access only).

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