The invention relates to a test bench (1) for a stellar sensor, characterized in that it comprises: - a stellar sensor (2) comprising a protective baffle (3), - a collimator (7) mounted on one end of the protective baffle (3), - a screen (5) able to displa...

The method involves comparing a reference image (R) of a scene with a secondary image (S) of the scene acquired by an imaging system, where the images consist of exposures of the scene acquired by the imaging system. Movement direction of an observation sa...

The spacecraft (1) has an estimation device (5) whose gyrometer (9) measures an instantaneous rotational velocity vector of the spacecraft relative to an inertial reference frame, and spatially spaced magnetometers (15) measure a vector of magnetic field p...

The method involves capturing a first set of star images (14) using a capturing head (6) of a star sensor (4) at frequency in a successive manner, where the sensor comprises another capturing head (5) for capturing a second set of star images (10) at anoth...

The system has an auxiliary tank (140) that is in direct contact with a main tank (10) through a pressurizing circuit (14) such that gas i.e. inert gas, in the auxiliary tank is continuously released with gas contained in upper volume of the main tank, whe...

A fuel such as hydrazine is stored in a main tank (2) under nitrogen pressure (3,4). After filtering (10) the fuel is pumped (12) to booster motors (1) in parallel with supply from a small secondary tank (13) which is under sprung bellows pressure (8,15). ...