Layout method for 10 N thrusters of high orbit satellite platform

Abstract

The invention relates to a layout method for 10 N thrusters of a high orbit satellite platform. The assembly positions of the thrusters are not limited to facing and backing a floor and are symmetrically laid out by taking service life middle-period centroid positions as references. The layout of the 10 N thrusters is limited according to demands of users, solar wings, antennas, sensors, actuating mechanisms and the like. In the method, the requirements in all the aspects of reducing plume influence of the thrusters, avoiding structural interference, improving operation efficiency of the thrusters, saving propellants and the like are reasonably considered. The phenomenon that two 10 N thrusters are combined and matched to control pitching or yawing is prevented; the problem that large interaxial coupling exists in the daily attitude control due to thruster asymmetry is solved; when paired thrusters maintain eastward / westward positions or southward / northward positions, the maximum disturbance moment is reduced; the capability of handling faults of ignition and orbital transfer of 490 N engines is greatly improved; the operation efficiency of the thrusters is improved; and the propellants are saved.

Description

technical field [0001] The invention relates to a layout method of a satellite thruster. Background technique [0002] In order to meet the stiffness requirements of satellite-rocket docking for high-orbit satellites, the position of the center of mass is usually lower than the geometric center. The coordinates of the thruster layout position are the coordinates of the center of the thruster nozzle in the satellite mechanical coordinate system OXYZ, which is fixed. The origin of the satellite mechanical coordinate system is the center of the docking surface of the satellite and the arrow. The center of mass in the mass characteristics is relative to the satellite mechanical coordinate system. The positive direction of the X-axis points to the positive normal of the east panel of the satellite, and the positive direction of the Y-axis points to the positive normal of the south panel of the satellite. The positive direction of the Z-axis points to the positive normal direction...

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Problems solved by technology

[0004] The thruster layout of this high-orbit platform satellite adopts the method of designing different installation angles of the thrusters on the floor and the back floor to reduce the interference moment when the position is maintained. When the height of the bearing cylinder is changed from 3800mm to 4400mm, The ability to carry the user's payload can be increased by 400kg, but the difference in the moment arm between the floor and back floor thrusters is too large. If the thruster layout of the existing platform is still used, the interference torque will be too large when the paired 10N thrusters maintain the position. Large (up to about 7Nm), resulting in low efficiency of the thruster

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