Measured particulate behavior in a subscale solid propellant rocket motor

Autor: David W. Netzer, W. D. Brennan, D. L. Hovland
Rok vydání: 1992
Předmět:
Zdroj: Journal of Propulsion and Power. 8:954-960
ISSN: 1533-3876
0748-4658
DOI: 10.2514/3.23578
Popis: Particle size distributions were measured in the combustion chamber, exhaust nozzle, and exhaust plume of a small, two-dimensional rocket motor that utilized aluminized propellants. Various nozzle contours and pressures to 4.36 MPa were utilized. For pressures less than approximately 2.4 MPa, D32 of the multimodal size distributions entering the nozzle decreased with increasing pressure. Above 2.4 MPa, the higher propellant burning rates significantly reduced particle agglomeration and increased C* efficiency. At higher pressures, D32 entering the nozzle was quite small (2-6 /u.) and monomodal, and did not vary appreciably with pressure. During tailoff, D32 was significantly larger than during the steady burn, indicating another possible source for plume signature variations. Exhaust particle D32 was 1.2-1.6 /* (with a
Databáze: OpenAIRE