Structure and mixing properties of combusting monopropellant sprays

Research output: Chapter in Book/Report/Conference proceedingConference contribution


The spray combustion properties of the HAN-based monopropellant LGP 1845 were studied both theoretically and experimentally. Drop size, liquid mass flow rate, and liquid mass flux distributions were measured for pressure-atomized sprays in the atomization breakup regime, burning within a combustion gas environment at pressures of 4.5-5.0 MPa. Two separated flow models were evaluated using the new measurements: a deterministic separated flow model where drop/turbulence interactions were ignored, and a stochastic separa;ed flow model where drop/turbulence interactions were considered using random-walk computations for drop motion. When based on burning rates found from earlier single drop experiments, both models were in reasonably good agreement with the measurements. Separated flow effects are quite important for these sprays, with the length of the liquid-containing region being relatively independent of injector diameter and extending roughly 300 mm from the injector exit for injector diameters of 0.3 and 0.6 mm.

Original languageEnglish (US)
Title of host publication28th Aerospace Sciences Meeting, 1990
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
StatePublished - 1990
Externally publishedYes
Event28th Aerospace Sciences Meeting, 1990 - Reno, United States
Duration: Jan 8 1990Jan 11 1990


Other28th Aerospace Sciences Meeting, 1990
Country/TerritoryUnited States

ASJC Scopus subject areas

  • Aerospace Engineering


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