| 摘要 |
The invention relates to the field of the supplying propellant gas to ionic propulsion units and in particular to a method for supplying an ionic propulsion unit with a propellant gas originating from a pressurized tank (2) through a supply circuit comprising an all-or-nothing valve (4), and, consecutively downstream of said all-or-nothing valve (4), a high-pressure restrictor (15), a buffer tank (6), and at least one low-pressure restrictor (7). Said method includes the steps of calculating a pressure set value (pc) of the buffer tank (6) on the basis of a flow rate set value (Qc), calculating the difference (&Dgr;&rgr;) between the pressure set value (pc) of the buffer tank (6) and a pressure (pt) measured in the buffer tank (6), calculating a time set value (te) for the opening of the all-or-nothing valve (4) on the basis of said difference (&Dgr;&rgr;) and of a pressure (pr) inside the pressurized tank (15), and opening the all-or-nothing valve (4) in accordance with the opening time set value (tc). The invention further relates to a supplying device (1) capable of carrying out said method. |
