Accession Number:

AD0862209

Title:

Study of Additive Effects on Hydrazine Combustion and Combustion Stability at High Pressure.

Descriptive Note:

Final rept. 2 Jan-31 Dec 68,

Corporate Author:

DYNAMIC SCIENCE IRVINE CA

Personal Author(s):

Report Date:

1969-11-01

Pagination or Media Count:

62.0

Abstract:

A study has been performed to relate the effects of fuel additives to combustion rates and combustion instability in hydrazinenitrogen 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 hydrazinenitrogen tetroxide rocket engine. Author

Subject Categories:

  • Combustion and Ignition
  • Liquid Rocket Propellants

Distribution Statement:

APPROVED FOR PUBLIC RELEASE