The burning rate of HAN-based (hydroxylammonium nitrate) liquid propellants. [Hydroxylammonium nitrate]
To improve the understanding of the physical processes which occur during the combustion of liquid propellants (LP), a strand burner was used to study hydroxylammonium nitrate-based LP flames. By observing the combustion of LP in such an arrangement, much has been deduced of the physical processes that occur during LP ignition and combustion. Combustion experiments were performed in which mixtures of the salts hydroxylammonium nitrate (HAN) and triethanolammonium nitrate (TEAN) in water were ignited by an electric discharge in a vessel at pressures of up to 30 MPa. Results of experiments conducted during turbulent combustion are: (1) the combustion of HAN-based LP occurs in two stages in which the liquid phase decomposition of HAN is followed by the decomposition of TEAN, (2) the turbulent combustion rate of LP 1846 decreases with increasing pressure. This variation of apparent burning rate with pressure, a result which is not seen in single component propellant combustion, is attributed to changes in the stability of the liquid-gas interface with pressure, and (3) a model of the combustion of HAN-based liquid propellants as it occurs in bulk has been presented, showing the reaction sequence of the components of HAN-based liquid propellants. 14 refs., 9 figs., 1 tab.
- Research Organization:
- Sandia National Labs., Livermore, CA (USA)
- DOE Contract Number:
- AC04-76DR00789
- OSTI ID:
- 5353889
- Report Number(s):
- SAND-88-8600; CONF-880802-6; ON: DE88006863
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400800* -- Combustion
Pyrolysis
& High-Temperature Chemistry
45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE
450100 -- Military Technology
Weaponry
& National Defense-- Chemical Explosions & Explosives
ALCOHOLS
AMMONIUM COMPOUNDS
AMMONIUM NITRATES
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
COMBUSTION
COMBUSTION KINETICS
COMBUSTION PROPERTIES
DECOMPOSITION
ETHANOL
FLAMES
FLUIDS
GASES
HIGH PRESSURE
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
IGNITION
INTERFACES
KINETICS
LIQUIDS
NITRATES
NITROGEN COMPOUNDS
ORGANIC COMPOUNDS
OXIDATION
OXYGEN COMPOUNDS
PRESSURE EFFECTS
PROPELLANTS
REACTION KINETICS
THERMOCHEMICAL PROCESSES
WATER