Abstract
The present report briefly introduces recent parabolic flight experiments on high-pressure droplet combustion. Dependence of burning characteristics of single fuel droplets both on ambient pressure and on gravitational acceleration was examined. Ignition delay of 1-octadecanol droplets had a minimum at an ambient pressure near to the critical pressure of the fuel. The ignition delay was not affected by residual reduced gravity. Burning rate constant of methanol droplets increased monotonically with increasing ambient pressure. Residual gravitational acceleration of the order of 10- 2 G induced an appreciable influence on the burning rate constant. Variation of burning rate constant as Gr1/4 was confirmed experimentally by varying gravitational acceleration and ambient pressure.
