He became a member of the managing committee of ELGRA ( European Low Gravity Research Association ) in 1978 , chairman of the German consulting group on fluid physics under low gravity .
Was scientific consultant at ESA , NASA and JAMIC .
He became a member of the managing committee of ELGRA ( European Low Gravity Research Association ) in 1978 , chairman of the German consulting group on fluid physics under low gravity and was scientific consultant at ESA , NASA and JAMIC .