Study of Additive Effects on Hydrazine Combustion and Combustion Stability at High Pressure.
Abstract
A study has been performed to relate the effects of fuel additives to combustion rates and combustion instability in hydrazine/nitrogen tetroxide rocket engines. Measurements of hydrazine drop combustion rates were made in a free flight drop burner at conditions encountered in actual rocket engine environments. Ammoniun nitrate additive in hydrazine was observed as a drop shattering agent under free flight conditions and the 'critical concentration' for shattering was estimated. These effects were analytically extrapolated to stability trends in a Transtage type rocket engine and showed stability to increase with increasing concentrations of ammonium nitrate. A series of engine firings were made with several concentrations of ammonium nitrate which demonstrated that additives could influence the stability of a hydrazine/nitrogen tetroxide rocket engine. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1969
- Accession Number
- AD0862209
Entities
People
- Bernard P. Breen
- Thomas C. Kosvic