karn (04/03/83)
UOSAT SPACECRAFT CONTROL CENTRE
UNIVERSITY OF SURREY, GUILDFORD, SURREY, ENGLAND
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UOSAT SPACECRAFT OPERATIONAL STATUS:
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**** UOSAT BULLETIN-19 1200 GMT 30 MARCH 1983 ****
** S/C NEWS **
FURTHER COMMAND STATION FACILITIES HAVE BEEN DEVELOPED TO
SUPPORT ATTITUDE MANOEUVRES DESIGNED TO ATTEMPT TO FREE THE
SNAGGED TIP-MASS MAGNETOMETER CABLES BASED ON THE RELATIONSHIP
BETWEEN THE SCIENTIFIC AND NAVIGATION MAGNETOMETER DATA AND THE
CHANGE IN DYNAMICS OF THE SPACECRAFT COMPOSITE DUE TO CURRENT
BOOM DEPLOYMENT.
IT IS NOT KNOWN WHETHER IT WILL BE POSSIBLE TO CLEAR THE CABLE
PROBLEM, HOWEVER, IF AFTER ALL ATTEMPTS HAVE BEEN MADE WE ARE
UNSUCCESSFUL, ALL IS NOT LOST AS THE SPACECRAFT CAN BE EITHER
SPIN STABILISED OR MAGNETICALLY STABILISED OR, POSSIBLY,
QUASI-GRAVITY GRADIENT STABILISED USING CONTINUOUS ON-BOARD
COMPUTER ATTITUDE CONTROL. IT WILL TAKE A NUMBER OF WEEKS TO
EXHAUST ALL CABLE RECOVERY POSSIBILITIES.
** S/C ATTITUDE **
THE SPACECRAFT IS CURRENTLY SPIN STABILISED WITH A SPIN PERIOD
OF 30 SECS.
** S/C OPERATIONS SCHEDULE **
WED 30 MARCH - MON 4 APRIL.....1200/SPEECH TELEMETRY/BULLETIN
TUES 5 APRIL - THU 7 APRIL.....300 BD ASCII / RTTY TELEMETRY
CURRENT OPERATIONAL CONDITIONS SHOULD INCREASE 145MHZ
AVAILABILITY DURING WEEKDAYS. NEW SOFTWARE IS UNDER TEST WHICH
WILL INCREASE THE RELIABILITY OF LOADING OF THE WEEKEND
BULLETIN PROGRAMS. SUGGESTIONS FOR NEW PRESENTATION FORMATS
FOR THESE WOULD BE WELCOME.
** THANKS FOR FEEDBACK **
K1KSY,B.LINDHOLM,WA2LQQ,W4AUZ,JA4GVA,WD4IXI,HB9RKR,HB9RJV,VE2QO
** POST BOX **
**K1KSY DE G3YJO...THANKS FOR DATA AND PLOTS RECEIVED, VERY
GOOD.
**WA2LQQ DE G3YJO..DOES THE US NEED ANY MORE COPIES OF THE IERE
UOSAT JOURNAL, G3AAJ COULD CARRY IN MAY.
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HAPPY EASTER FROM THE UOSAT TEAM
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*SPACECRAFT ORBITAL DATA*
ORBITS FOR 30TH MARCH
UOSAT OSCAR-8 NOAA-7
ORBIT NO : 8183 25821 9109
EQX TIME : 15:07:18 14:09:37 15:07:57 GMT
EQX LONG : 359.0 169.4 10.7 DEG.W
MEAN HGT : 505.1 905.0 850.0 KM
PERIOD : 94.7183514 103.1668742 101.9100825 MINS
P-DRAG : 5.394E-05 2.166E-06 7.500E-06 *N-REF
LONG INC : 23.6791479 25.7935558 25.4881782 DEGS
L-DRAG : 1.357E-05 7.030E-07 2.000E-07 *N-REF
QSL/POST CARDS CONFIRMING RECEPTION OF UOSAT DATA INCLUDING
STATION DETAILS WOULD BE APPRECIATED FOR SURVEY OF NO. AND
GEOGRAPHIC DISTRIBUTION OF ACTIVE STATIONS
SEND TO: DR.M.N.SWEETING, UOSAT CONTROL CENTRE - THANK YOU