Steady State Analysis of Hydrazine Catalytic Thrusters for Different Types of Catalysts
Interim rept. no. 4, 1 Jan-30 Jun 1975
INSTITUTO NACIONAL DE TECNICA AEROSPACIAL MADRID (SPAIN)
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A theoretical analysis has been made to determine the characteristics of the steady state behaviour of a hydrazine decomposition engine. The model makes use of the simplification that consists in considering that the ammonia decomposition is only important at high temperatures. The results are valid for different types of catalysts with different stoichiometries and reaction rates for hydrazine and ammonia decomposition. Conditions at the chamber exit are obtained analytically as a function of chamber length and other characteristics, in particular expressions are given for fractional ammonia decomposition at the exit and the specific impulse obtained if the outgoing mixture would be expanded to the vacuum. Fluid and particle temperature distributions along the chamber are also calculated keeping, however, fixed a non-dimensional parameter expressing the ratio of the mass and heat transfer from the interstitial fluid to the particle.
- Inorganic Chemistry
- Physical Chemistry
- Liquid Rocket Propellants