Ofeq-2 orbit, attitude, and flight evaluation
Abstract
The most significant events and phenomena that occurred during the Ofeq-2 flight are evaluated in this work. Particular attention is paid to the physical and technological factors which affected its orbital lifetime. Comparison of Ofeq-2 telemetry results with prelaunch estimations and with Ofeq-1 flight data are presented. The satellite's orbit and mission characteristics are defined and the principal systems of Ofeq-2 are described. Topics addressed include the interaction between the spinner's attitude with respect to the sun and consequent electric power generation. The coning angle development history, the role of the solar data evaluation, and the factors influencing drag are also analyzed. All of these affected the Ofeq-2 power outage-recovery event. The orbit determination and the coning angle evolution estimation methods are discussed in some detail. A brief report on radiation effects on computer RAM (random access memory) is also given. An integrative systems engineering approach summary of the telemetry data reconstruction and analysis concludes the paper.
- Publication:
-
Israel Society of Aeronautics and Astronautics, 32nd Annual Conference on Aviation and Astronautics
- Pub Date:
- February 1992
- Bibcode:
- 1992isaa.conf..266G
- Keywords:
-
- Nutation;
- Orbit Calculation;
- Satellite Instruments;
- Satellite Lifetime;
- Spacecraft Power Supplies;
- Telemetry;
- Unmanned Spacecraft;
- Aerodynamic Drag;
- Israeli Space Program;
- Numerical Integration;
- Orbit Insertion;
- Spin Stabilization;
- Spacecraft Design, Testing and Performance