Combustion of PMMA in a solid fuel ramjet

Conference · Wed Jan 01 00:00:00 EST 1986

OSTI ID:5927908

Korting, P A.O.G.; Van der Geld, C W.M.; Vos, J B; Wijchers, T; Nina, M N.R.

The combustion behaviour of polymethyl methacrylate (PMMA) in a solid fuel ramjet was investigated using a connected pipe test facility. At pressures below 0,6 MPa almost no soot is formed, the flame is blueish and the regression rate appears to be primarily controlled by convection. At higher pressures, soot is formed and radiative heat transfer appears to be increasingly important. As a result, the regression rate becomes pressure dependant, while the effect of mass flux on regression rate decreases. Oxygen content in the air and air inlet temperature also affect combustion behaviour. No grain size effect on regression rate is noticed. Spectroscopic measurements demonstrated the presence of OH, C/sub 2/ and CH in the combustion chamber. The combustion efficiency varied between 70 and 76% and can be increased by increasing the size of the aft mixing chamber, the fuel grain length or the oxygen content in the air. Cold flow computer calculations were performed and showed good agreement with experimentally obtained results.

• OSTI ID: 5927908
• Report Number(s): CONF-8606184-
• Resource Relation: Conference: 22. joint propulsion conference, Huntsville, AL, USA, 16 Jun 1986
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
PMMA
COMBUSTION
MONITORING
RAMJET ENGINES
COMBUSTION KINETICS
AIR
COMBUSTION CHAMBERS
COMBUSTION PRODUCTS
COMPUTER CALCULATIONS
CONVECTION
FLAMES
SOOT
SPECTROSCOPY
TEST FACILITIES
VERY HIGH TEMPERATURE
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
ENERGY TRANSFER
ENGINES
ESTERS
FLUIDS
GASES
HEAT ENGINES
HEAT TRANSFER
INTERNAL COMBUSTION ENGINES
KINETICS
MASS TRANSFER
ORGANIC COMPOUNDS
ORGANIC POLYMERS
OXIDATION
POLYACRYLATES
POLYMERS
POLYVINYLS
REACTION KINETICS
THERMOCHEMICAL PROCESSES
330100* - Internal Combustion Engines
400800 - Combustion
Pyrolysis
& High-Temperature Chemistry
990220 - Computers
Computerized Models
& Computer Programs- (1987-1989)