| OCR Text |
Show 188 urethane propellant about 350°C at all fluxes was 325°C for UBZ, PBAA binder. to Solution compared the mathematical model used to compute these pre-ignition temperatures, included dependent physical extinction constants impossible coefficient, but such included conductivity as to and a temperature thermo constant It diffusivity. was determine the accuracy of the computed temperatures. to Ignition of Translucent Propellants with Intense Surface a: Cooling An additional set of ignition experiments using translucent propellants heated radiatively to and cooled a of jet N2 completed was determine whether subsurface chemical reactions could be stimulated. The propellants same ignition experiments have used in these were since temperature-dependent three of the each of propellants, UAQ, cooling the surface with temperature from rising reactions UBZ a means of previous was known to The fact that temperature lead one to that hope N2 and thus preventing jet of to the ignition temperature, subsurface Since these ignition. out losses had a portion to shown in is experiments the mechanism used unavoidably blocks estimating such in by the surface a schematic, Figure F-16. coolant propellants coefficients. could be stimulated and result the surface in the as and UCI have extinction coef The assembled apparatus used in flux, experiments these extinction ficients which decrease with the by to of position the radiant be devised. The |
