Computer Science – Numerical Analysis
Scientific paper
Jan 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993csta.procq....f&link_type=abstract
In its Center for Space Transportation and Applied Research Fifth Annual Technical Symposium Proceedings 00010 p (SEE N96-16940
Computer Science
Numerical Analysis
Artificial Satellites, Mission Planning, Numerical Analysis, Payload Assist Module, Stage Separation, Transporter, Upper Stage Rocket Engines, Cartesian Coordinates, Euler Equations Of Motion, Fixed Point Arithmetic, Inertial Coordinates, Time Measurement
Scientific paper
In this report, the orbital separation between a STAR-48V upperstage motor and the COMET FreeFlyer is investigated. The time from nominal STAR-48 engine burnout is to be determined such that the STAR-48 will not collide with the FreeFlyer once the separation process has been initiated. To analyze this separation, the forces acting upon both the FreeFlyer and the STAR-48 are described in a body fixed coordinate system. These coordinates are then transformed into an Euler coordinate system and then further transformed into a relative inertial coordinate system. From this analysis and some basic assumptions about the Star-48/FreeFlyer vehicle, it can be concluded that the STAR-48 will not collide with the Free Flyer if the separation occurs at 120 seconds after nominal burnout of the STAR-48. In fact, the separation delay could be a shorter period of time, but it is recommended that this separation delay be as long as possible for risk mitigation. This delay is currently designed to be 120 seconds and the analysis presented in this report shows that this time is acceptable.
Fuller Kevin M.
Myers Carter H.
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