国際宇宙ステーションのインスタグラム(iss) - 7月19日 02時59分

“A floating sphere of fire comes alive in FLEX-2." #Reid

The Flame Extinguishment - 2 (FLEX-2) experiment is the second experiment to fly on the ISS which uses small droplets of fuel to study the special spherical characteristics of burning fuel droplets in space. The FLEX-2 experiment studies how quickly fuel burns, the conditions required for soot to form, and how mixtures of fuels evaporate before burning. Understanding these processes could lead to the production of a safer spacecraft as well as increased fuel efficiency for engines using liquid fuel on Earth. This test experienced flame oscillations, which appear as a hole in the flame shell that repeatedly opens and closes. These oscillations create asymmetries in the flame, resulting in a force imbalance on the droplet, and cause the droplet to move out of the camera’s field of view. NASA PAO

#nasa #nasajsc #spacestation #internationalspacestation #explore #exploration #spacegram #Exp40 #science #fire #flame

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