karn (03/28/83)
UOSAT SPACECRAFT CONTROL CENTRE
UNIVERSITY OF SURREY, GUILDFORD, SURREY, ENGLAND
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UOSAT SPACECRAFT OPERATIONAL STATUS:
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**** UOSAT BULLETIN-18 1200 GMT 25 MARCH 1983 ****
** S/C NEWS **
SEVERAL UNSUCCESSFUL ATTEMPTS HAVE BEEN MADE THROUGHOUT THE
LAST WEEK TO RELEASE THE SNAGGED CABLES TO THE TIP-MASS BY
ALTERNATELY RETRACTING & EXTENDING THE BOOM. PRECISE
RE-CALIBRATION OF THE NAVIGATION MAGNETOMETER HAS BEEN
NECESSARY BEFORE FURTHER ATTITUDE MANOEUVRES CAN BE ATTEMPTED.
THE SPACECRAFT POWER BUDGET WENT THROUGH A MINIMUM AS THE
PRECESSION CONE PASSED THROUGH THE SUN LINE LAST WEEK, HOWEVER
THE BATTERIES ARE NOW FULLY CHARGED ONCE MORE. FURTHER
ANALYSIS AND EXPERIMENTS WILL CONTINUE TO ATTEMPT TO RELEASE
THE CABLES TO ALLOW GRAVITY STABILISATION.
** S/C ATTITUDE **
THE SPACECRAFT IS CURRENTLY SPINNING IN A STABLE MANNER WITH A
Z-PERIOD OF 110 SECS AND A LARGE NUTATION ANGLE.
** S/C OPERATIONS SCHEDULE **
SATURDAY & SUNDAY......145 MHZ 1200 TELEM/BULLETIN/SPEECH
TELEMETRY
WEEKDAYS...........145/435 MHZ 1200 TELEM; SPEECH; CCD TESTS
..................WHOLE ORBIT DATA DUMPS; MAG & RAD DATA
** THANKS FOR FEEDBACK **
VE2QO, ZL1AOX, JA4GVA, HB9RKR, HB9RJV, JA2GSD, G8EDG, G4LZV,
JH7CKF, K1KSY KA9Q, W7AVE, G6ESK, G3UMF - MANY THANKS FOR DATA
** POST BOX **
JR1SWB DE G3YJO...HOPE TO HAVE TELEMAIL HERE SOON, SORRY FOR
DELAYS IN TRAVEL.
CQ DE G3YJO...QSL CARDS AVAILABLE SOON - SLIGHT DELAY.
*SPACECRAFT ORBITAL DATA*
ORBITS FOR 25TH MARCH
UOSAT OSCAR-8 NOAA-7
ORBIT NO : 8107 25752 9038
EQX TIME : 15:08:17 15:31:06 14:32:19 GMT
EQX LONG : 359.4 189.6 1.1 DEG.W
MEAN HGT : 505.6 905.0 850.0 KM
PERIOD : 94.7218437 103.1670237 101.9106150 MINS
P-DRAG : 5.718E-05 2.166E-06 7.500E-06 *N-REF
LONG INC : 23.6800177 25.7936043 25.4881924 DEGS
L-DRAG : 1.438E-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