Investigation of a small solid fuel ramjet combustor

Journal Article · Thu Jun 01 04:00:00 EDT 1989 · J. Propul. Pow.; (United States)

DOI:https://doi.org/10.2514/3.23148· OSTI ID:5893140

Levy, Yeshayahou; Gany, Alon; Zvuloni, Roni

Experimental and analytical investigations of a small solid-fuel ramjet (SFRJ) combustor were conducted. A static test system with a 25-kW electrical air heater simulated the air temperature and pressure encountered in flight at a Mach number of 3 at sea level. The transparent polymethylmethacrylate fuel used in the tests permitted continuous video photography, revealing the local fuel-regression-rate behavior and the instantaneous ignition and combustion phenomena. The results demonstrated high combustion efficiency and indicated peculiar local and average fuel-regression-rate correlations. The analysis indicated that the specific conditions resulting from the low Reynolds number range in small SFRJ motors, in contrast to large combustors, enhance the effect of the sudden-expansion heat-transfer regime relative to the boundary-layer regime. 14 refs.

• Research Organization: Technion - Israel Institute of Technology, Haifa
• OSTI ID: 5893140
• Journal Information: J. Propul. Pow.; (United States), Journal Name: J. Propul. Pow.; (United States) Vol. 5; ISSN JPPOE
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
ANALYTICAL SOLUTION
CHEMICAL REACTIONS
COMBUSTION
COMBUSTION CHAMBERS
COMBUSTION PROPERTIES
EFFICIENCY
ENERGY TRANSFER
ENGINES
ESTERS
EXHAUST GASES
FLUIDS
FUEL-AIR RATIO
GASEOUS WASTES
GASES
HEAT ENGINES
HEAT TRANSFER
INTERNAL COMBUSTION ENGINES
ORGANIC COMPOUNDS
ORGANIC POLYMERS
OXIDATION
PMMA
POLYACRYLATES
POLYMERS
POLYVINYLS
RAMJET ENGINES
REYNOLDS NUMBER
THERMOCHEMICAL PROCESSES
WASTES