Universal spacecraft attitude steering control system

Details Universal spacecraft attitude steering control system Universal spacecraft attitude steering control system

1995-05-15

1997-12-02

Kashnikow, Andres

Aeronautics and astronautics

Spacecraft

Attitude control

244176, 364434, B64G 128, G06G 770

Patent

active

056927070

ABSTRACT:
A method and system of attitude steering and momentum management for a spacecraft suitable over a wide range of orbit altitude and inclination parameters and a similar wide range of mission steering profiles is provided. The system utilizes two active momentum wheels positioned with their spin axes nominally coaligned on the spacecraft pitch axis. Each wheel is pivoted by jackscrew type mechanisms which allow the angular momentum to be tilted (e.g. within the range 0-45.degree. from the nominal alignment with respect to the spacecraft body). The spacecraft control processor generates wheel torque commands for the wheel speed electronics and jackscrew drive commands for the platform assemblies in order to adjust the speed and amount of tilt of the momentum wheels. The invention provides a two-momentum wheel array that allows use of either momentum bias steering or large angle zero-momentum steering and accommodates multiple orbit geometries and varying degrees of attitude steering agility.

REFERENCES:
patent: 3741500 (1973-06-01), Liden
patent: 3999729 (1976-12-01), Muhlfelder et al.
patent: 4723735 (1988-02-01), Eisenhaure et al.
patent: 4735382 (1988-04-01), Pinson
patent: 5042753 (1991-08-01), Atlas
patent: 5112012 (1992-05-01), Yuan et al.
patent: 5261631 (1993-11-01), Bender
patent: 5315158 (1994-05-01), Danielson

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