Midcourse MTS mv neg OSE P Paschen's Law P channel PCU pos PSD pt GLOSSARY OF TERMS AND ABBREVIATIONS (cont) Used in reference to spacecraft maneuver performed after injection to put S/C on proper course Mobile Tracking Station millivolt(s) Stored Command (from CC&S to other units in S/C) Silicon Controlled Rectifier: see Appendix M Static Phase Error Establishes warmup/full power interval and sync pulses for cameras simulate The time of Agena separation Separation of booster engines from Atlas (see Ledex) Type Approval (testing): see Section IV temperature Refers to area or maneuver when S/C nears its target Shield at top of spacecraft VCO Transmitter Power Supply Stored commands sent to the TV Subsystem from CC&S Cable with connector, from S/C to OSE, that separates at launch microsecond(s) volt(s) Voltage Control Oscillator 2 BIBLIOGRAPHY Information on the Television Subsystem design criteria and operational characteristics, as well as the Ranger 6 flight sequence and operational plans, are contained in the documents listed. JET PROPULSION LABORATORY RA-I Preliminary Flight Performance Report and Failure Analysis Submitted by Spacecraft Data Analysis Team Introduction Edited by A. E. Dickinson February 15, 1962. This report is submitted in accordance with IQM to J. D. Burke from H. M. Schurmeier dated Feb. 1, 1962. It presents the results of the findings to date concerning all discrete spacecraft failures which actually aid occur or which at one time were believed to have occurred during the ormal mission lifetime. The emphasis has been on those performance aspect. which could affect RA-IV, with the result that very little analysis has been done of the spacecraft performance after the vidicon data period. A. General- The spacecraft performance can be divided into three distinct phases: launch, midcourse and terminal. The launch phase was initiated by starting the CC and S timer at two minutes before liftoff. course and terminal phases were initiated by real time ground commands vites selected to optimize the ensuing maneuver sequences under abnormal trajectory conditions. Each phase consisted of a fixed sequence of events to be executed on command from the CC and S. The only variables within these sequences were the duration of the midcourse and terminal maneuver turns, the direction or polarity of each turn, and the velocity increment to be provided by the midcourse motor. These variables were read in to the CC and S register as sets of three stored commands from the ground prior to initiating the midcourse and terminal maneuvers. |