Publicado 6 números por año
ISSN Imprimir: 2150-766X
ISSN En Línea: 2150-7678
Indexed in
COMBUSTION BEHAVIOR AND THERMOCHEMICAL PROPERTIES OF JA2 PROPELLANT
SINOPSIS
JA2 is a commonly used gun propellant for various weapon systems. Knowledge of its combustion behavior is useful for system design application. The burn rate of JA2 propellant was determined as a function of pressure, 0.69 ≤ p ≤ 41.4 MPa (100 ≤ p ≤ 6,000 psi), and initial temperature, 25°C ≤ Ti ≤ 60°C. Burn rate plot shows slope breaks at 6.9 MPa (1,000 psi) and 4.5 MPa (650 psi) for the initial temperatures of 25°C and 60°C, respectively. At high pressures, P > 40 MPa (6,000 psi), measured burn rates were found to agree with the Army's closed bomb data. The steady-state burn rates also agreed with the instantaneous burn rates obtained from X-ray radiography measurement conducted at various chamber pressurization rates. The burning surface temperature and temperature sensitivity (σp) were also deduced. The rapid decay of σp with an increase in pressure for p < 20 MPa and extremely low values of σp at pressures greater than 20 MPa explains the lack of dynamic burning of JA2 propellant.
-
Ferrara Peter, Risha Grant, Boyer Eric, Bourdin Caroline, Kuo Kenneth, Effect of Gap Width on Combustion Behavior of Two Opposing Propellant Surfaces, 39th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit, 2003. Crossref