METHOD FOR SPACECRAFT ORIENTATION IN SOLAR-TERRESTRIAL COORDINATE SYSTEM Russian patent published in 2018 - IPC B64G1/24 B64G1/36 

FIELD: astronautics.

SUBSTANCE: invention relates to orientation control of a spacecraft (SC) with solar batteries (SB). Method includes orienting the first axis of a spacecraft towards the center of the Earth by turning around the second and third axes according to information from the orientation device to the Earth. Orientation of the second axis of the spacecraft relatively to the plane of the Sun – Spacecraft – Earth is carried out by creating and maintaining the rotation speed around the first axis of the spacecraft according to information from the angular velocity measurement unit. Sign of this velocity is changed every time the signal decreases from the SB panels. Normal to the surface of the SB is combined with the direction to the Sun by rotating the SB panels around an axis parallel to the third axis of the spacecraft according to the calculated ballistic information using a solar batteries drive. In particular orbital regions: at small and large angles, the Sun – Spacecraft – Earth controls the rotation of the spacecraft around the first axis according to ballistic information and the integral of the speed of the specified rotation (heading angle).

EFFECT: technical result of the invention is to provide a working orientation of the SB panels in the event of a device malfunction targeting the Sun.

1 cl, 3 dwg