Lausch

oats

attitude determination hammars

attitude control har0har8

initial state

pinal stat6

ssousNce duration

attitude constraints

ground support

malfunctions

ras-3

june to, 1973

1-axi3 dtottal sum sensors; rax is onitat sun schsofoi panorama scanner '

colo oas thrust-er: extendable antennas: u8ra. ton oamp8r qoom

3-axis. gravity-gradient stabi-uzco circular. lunar (01sit; 4 antennae deployed to 239 m: negligible at. t1tude rates

5 months

power ano thermal IN taanslunar 0r8it; antenna deployment sequsnceo to mini* mice attitude li8ra* ttonsftsocm sending; moon light. tng conditions slot. abu por pas oata prior to initial antenna deployment

OPEN-LOOP, REALTIME GRAPHtCS DISPLAYS TO MONITOR GAS JET MANEUVERSANO TO tNITIATB AN TEN. NA OEPLOYMSNT

su» interference «n pas oata. 3-axis su« sensor pailure at um spin rate. apparent failure op all antennas to fully opploy. counter.which os ter. mined 0ir8ctt0n 0» precession. smpteo ouring maneuver. os8pin jets w pulsed mode remains don beyond presst tims interval

«gm

APRIL 9.191®

3-axis otcrr At sun sensor: maonetom» fiter

z-aiis electro* magnst; extendable boom; pitch axis momentum wheel; magnst. t caj.lv anchors d boo* current damper

random orientation: tousle rath lb s3 than 0.srpm

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