The papaer describes analyses of the data obtained in our aircraft pool-boiling experiments performed at Bretigny, France in December 1989, placing the focus on possible effects of residual acceleration on the vapor-bubble behabior as well as the heat transfer characteristics. In the experiments, the appratus including a boiling call filled with subcooled n-pentane was fixed onto the cabin floor of the aircraft during some parabolic flights, but it was freely floated in the cabin during other parabolic flights. Thus, the experiments provided us with two classes of data each reflecting one of the two oscillatory acceleration levels different from each other by more than one order of magnitude. Analyses of the whole data revealed a significant difference between the two classes in the frequency of bubble departure from the heater surface, but no detectable difference in the heat transfer coefficient averaged over the heater surface.
The behavior of RF discharge in argon gas at 150 and 300 Torr under low gravity 10-3 G were observed by means of a drop tower. The influence of convection on the discharge column is analyzed from dynamical VTR images.