Publication Date:
2019-07-13
Description:
Two Galileo dynamic models were developed to simulate the spinup, the main engine burn and the spindown maneuvers for the critical events of the Jupiter orbit insertion and perijove raise maneuver. The dynamic interaction between the spin thruster pulsing frequency, the science magnetometer boom flexible modes and the propellant slosh modes were studied. The prediction of safe orbit insertion was validated in flight. For the perijove raise maneuver, the simulation results indicated that propellant unporting would occur if the original spin thruster duty cycle was not updated. Based on further simulation results, a new duty cycle was selected to prevent propellant unporting. Subsequent Galileo flight data indicated that the perijove raise maneuver was successfully executed.
Keywords:
Spacecraft Design, Testing and Performance
Type:
Paper SO96.5.07
,
Proceedings of 4th International Symposium on Space Mission Operations and Ground Data Systems, volume 2; 2; 791-798; ESA-SP-394-Vol-2
Format:
text
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