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30 APR PAM-D brief: [VIDEO-TAPED] ● parts: cradle, spin table, expendable solid, spacecraft [[sketch]] [[arrow pointing up right]] [[/sketch]] close SUNSHIELD [sketch] [[arrow pointing down]] [/sketch] ● mnvr to ATTITUDE ● OPEN SUNSHIELD ● PREPARE for DRY [[sketch]] [[arrow pointing down]] [[/sketch]] ●CNTL, during coast ●DPLY [[erased sketch]] [[arrow pointing down]] [[/erased sketch]] ●OMS sep mnvrs ● WEIGHT: PAM-D ~ 6500# + spacecraft ~ 2300# [[right curly bracket groups the above 2 lines together]] ~8000# [[next to curly bracket]] • ASE: all on cradle; orbiter interfaces [[underline]]at[[/underline]] cradle • Expendable: sequence system, solid PAYLOAD ATTACH FITTINGS (SEQUENCER, BATTERIES, T/M (if appropriate)) CLAMP BAND SEQUENCER: [[circled]]1[[/circled]] MOTOR IGNITION [[circled]]2[[/circled]] SPACECRAFT SEP(from PAM) [[circled]]3[[/circled]] WEIGHT RELEASE (TUMBLE) [[circled]]4[[/circled]] CMDs TO SPACECRAFT (if req'd) [TIMER STARTED BY SEP from ORBITER] [[arrow pointing to the right]] SEPARATION SWITCHES PROVIDE LOGIC PWR ( 2 BATTERIES, A & B, OPERATE SEQUENCER REDUNDANTLY) [[left margin]]expendable[[/left margin] • SAFE & ARM circuit: enabled by pnl switch (redundant circuits, redundant contacts) - CNTLS • SCA = sequenct cntl assembly (2 redundant SCA's) [[left margin]][[??]][[/left margin]] [[left margin]][[??]][[/left margin]] • (orbiter power)? to spacecraft through slip-ring [[left margin]][[??]][[/left margin]] • T/M option (S-band - onto PL rcdr, or PDI (when available)) ASE: (sunshield, spin table, PL restraints, provides spacecraft monitoring) INTERFACES: MTU GPC PRI PL BUS (pwrs 2 independent buses on cradle) PL RCDR, PDI
Transcription Notes:
I wasn't sure the best way to indicate the arrows, so I marked them as a sketch and described them the best I could. Same goes for the right curly bracket grouping the weights and summing their total.