Abstract: The invention relates to an assistance system (1, 25) for providing support in situation-dependent planning and/or guidance tasks of a controlled system (2), comprising a state detection unit (3) for detecting at least one state (5, 5a) of the controlled system (2), an acoustic receiving unit (9, 27), which is designed to receive acoustic voice signals of voice communication (24) between at least two persons (21, 22), and a voice processing unit (7), which is designed to detect voice information (10) regarding the controlled system (2) from the received acoustic voice signals, wherein the state detection unit (3) is designed to adapt the detected state (5) and/or a predicted state (5a) of the controlled system (2) that can be derived from the current state, according to the detected voice information (10).

Abstract: A system in which a surface tension device is connected at the outlet of the propellant tanks, said surface tension device having surface tension gas barrier means, the presence of gas bubbles at the inlet of said surface tension device is detected and a detect signal is produced, said detect signal indicating that the propellant tanks are empty. The detect signal then causes the spacecraft thrusters to be fed from an auxiliary propellant tank. The latter can be implemented inside a main propellant tank.