1. A system for mitigating ERGD events affecting the pitch and roll attitude of a satellite in an inclined, elliptical earth orbit which comprises a plurality of infrared earth sensors for determining satellite roll and pitch connected to means for yaw biasing said infrared earth sensors’s earth scans away from ERGD areas on the earth.
2. A system for mitigating ERGD events affecting the pitch and roll of a satellite in an inclined, elliptical earth orbit which comprises a plurality of infrared earth sensors for determining satellite roll and pitch connected to means for inhibiting at least one of said infrared earth sensors’ scans while said scan passes over ERGD areas on the earth.
3. A system for mitigating ERGD events affecting the pitch and roll of a satellite in an inclined, elliptical earth orbit which comprises a plurality of infrared earth sensors for determining satellite roll and pitch connected to means for using digital integrating rate assembly (DIRA) instead of said earth sensors for satellite roll and pitch determination while said scan passes over such areas.
4. A method for mitigating disturbances in roll and pitch of an earth satellite in an inclined, elliptical orbit, said disturbances arising from ERGD events in earth areas that the satellite’s ES scan traverses, said satellite including infrared earth sensors for satellite roll and pitch attitude control, comprising determining where said areas are located, and mitigating the effect of said ERGD events in said areas.
5. The method of claim 4 further comprising mitigating said disturbances by yaw biasing said satellite and its ES sensors to avoid exposure of said ES sensors to said ERGO areas.
6. The method of claim 4 further comprising mitigating said ERGO disturbances by inhibiting at least one scan of said ES sensors while said satellite’s ES scan traverses said areas.
7. The method of claim 4 further comprising mitigating said ERGD disturbances by ignoring ES data while said satellites scan passes over said areas, and using DIRA’s for pitch and roll positioning during said passage over said areas.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A pop-pin, comprising: a shaft comprising an exterior surface; a first end; a second end; and a first cylinder having a first diameter; a second cylinder having a second diameter smaller than the first diameter of the first cylinder and comprising the second end and a third end; wherein the first cylinder comprises the first end and a fourth end; and wherein the third end of the second cylinder is attached to the fourth end of the first cylinder; and wherein the fourth end of the first cylinder comprises internal screw threads, and wherein the third end of the second cylinder comprises external screw threads and the first cylinder and the second cylinder are configured for threaded engagement; a trigger catch extending perpendicularly to the exterior surface of the shaft; a retention catch extending perpendicularly to the exterior surface of the shaft and disposed between the trigger catch and the first end of the shaft; a handle disposed on the second end of the shaft; and a coil compression spring disposed around the shaft and dimensioned for capture between the handle and the retention catch; wherein the trigger catch extends sufficiently from the exterior surface of the shaft to maintain the spring in an unstable equilibrium position when the coil compression spring is biased against the handle, and wherein the retention catch extends sufficiently from the exterior surface of the shaft to retain the coil compression spring between the handle and the retention catch.
2. The pop-pin of claim 1 wherein the fourth end of the first cylinder comprises external screw threads, and wherein the third end of the second cylinder comprises internal screw threads and the first cylinder and the second cylinder are configured for threaded engagement.
3. The pop-pin of claim 1 wherein the fourth end of the first cylinder comprises the retention catch.
4. The pop-pin of claim 3 wherein the retention catch comprises a shoulder formed by the coupling of the first and second cylinders and defined by the difference in diameters of the first and second cylinders.
5. The pop-pin of claim 3 wherein the handle is a spheroid.
6. The pop-pin of claim 5 further comprising a washer comprising: a first surface having a first hole; a second surface having a second hole; and a channel from the first hole to the second hole; wherein the second cylinder is disposed through the channel such that the first end of the first cylinder and the coil compression spring capture the washer.
7. The pop-pin of claim 3 wherein the handle comprises a T-bar.
8. The pop-pin of claim 3 wherein the handle comprises a planar element.