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Feasibility of Obtaining GPS/PAM-DII Telemetry from PKM Ignition through PAM-DII Separation
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Abstract
The Shuttle version of the NAVSTAR Block II Global Positioning System (GPS) Space Vehicle (SV) will be injected into the transfer orbit with a Perigee Kick Motor (PKM) contained in an attached PAM-DII stage. Mission “drift” orbit injection will occur near the 4th apogee of the transfer orbit with an Apogee Kick Motor (AKM) burn. Final mission orbit will be attained following any necessary corrections by the Reaction Control System (RCS) which will also be used throughout the SV lifetime for orbit maintenance. A primary concern in the transfer procedure is GPS/PAM-DII separation following PKM burnout because of the possibility of SV and PAM-DII recontact if large coning angles have developed during the burn. Hence, initial flights will need substantial instrumentation to monitor PKM burn and separation data. The most desirable method of instrumentation readout is by telemetry transmission to an Air Force Remote Tracking station (RTS). This paper shows that the PKM burn can be planned to occur within the field of view of an RTS within the desired look angle constraints. A detailed example and an extensive series of mission planning charts are also provided.
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Citation
Friedlander, M., Winn, B., Yang, J., and Shiokari, T., "Feasibility of Obtaining GPS/PAM-DII Telemetry from PKM Ignition through PAM-DII Separation," SAE Technical Paper 861761, 1986, https://doi.org/10.4271/861761.Also In
References
- Chu S. T. et al. “A Velocity Matching Technique for Three-Dimensional Orbit Transfer in Conceptual Mission Design,” The Journal of the American Astronautical Sciences XXVI 4 343 368 October-December 1978
- PAM-DII, Estimated Thrust Time Data from MDAC Furuta D. 4 May 1984
- Payload Integration Plan, Annex 1, JSC-14074 NASA March 1984
- Lee R. Stewart G. PAM-DII Plume Plasma Attenuation, ATM84(9975)-140 The Aerospace Corp. 28 August 1984
- Hendrickson B. NAVSTAR GPS Shuttle Mission Planning Guide 1 and 2 The Aerospace Corp. February 1985