Abstract
Two times of TR-1A sounding rocket combustion experiments have been carried out to explore the flame propagation mechanism in the droplet-vapor-air mixtures. From these experiences, how to carry out the good combustion science in the space are discussed considering the microgravity combustion history and the organization system of space experiments. The most important point for the researchers is the good explanation of their science to the space agencies and the hardware makers. On the other hand, that for the space agencies and the hardware makers is the flexible operation for the scientific demand.
