The Future of Cryogenic Propulsion

Paper number

IAC-14,C4,1,7,x26190

Author

Mr. Christophe Bonhomme, Centre National d'Etudes Spatiales (CNES), France

Coauthor

Mrs. Sandrine Palerm, Centre National d'Etudes Spatiales (CNES), France

Coauthor

Mr. Yann Guelou, Centre National d'Etudes Spatiales (CNES), France

Coauthor

Mr. Jjean-noël Chopinet, Snecma, France

Coauthor

Mr. Patrick Danous, Snecma, France

Year

2014

Abstract

As the French Space Agency, CNES is funding an ambitious program to identify, develop and evaluate the technologies and skills that will enable to design cost efficient future launchers. This program deals together with, researches for mastering complex physical phenomena, set ups of robust and efficient numerical tools for design and justification, and identification of innovative manufacturing processes and hardware. It starts from low Technical Readiness Level (TRL 2) up to a maturation of TRL 6 with the use of demonstrators, level that allows to be ready for a development.

This paper focuses on cryogenic propulsion activities conducted with Snecma and French laboratories to prepare next generation engines. The physics in that type of hardware addresses a large range of highly complex phenomena, among them subcritical and supercritical combustion and possible associated High Frequency oscillations in combustion devices, tribology in bearings and seals, cavitation and rotordynamics in turbopump. The research activities conducted to master those physical phenomena are presented. Moreover, the operating conditions of these engines are very challenging, both thermally and mechanically. The innovative manufacturing processes and designs developed to cope with these conditions while filling cost reduction requirements are described. Finally, the associated demonstrators put in place to prepare the implementation of these new technologies on future engines are presented.

Abstract document

IAC-14,C4,1,7,x26190.brief.pdf

Manuscript document

IAC-14,C4,1,7,x26190.pdf (🔒 authorized access only).

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