Satellites and subsystems > Attitude > Attitude actuators > Reaction wheels > SSTL GEO Wheel
Key highlights
The SSTL GEO Wheel is a GEO reaction wheel with integrated rad-hard electronics and a 15 year lifetime.
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Last updated: 2023-05-12
SSTL GEO Wheel
Technical specs
reaction torque
200mNm to +/-3900rpm at 48.5V DC
angular momentum storage
12Nms @ +/-5000rpm
angular speed
+/-5000rpm
static unbalance
< 2 g cm
dynamic unbalance
14 g cm^2
mass
< 5.6 g
lifetime
15.25 yr
mechanical vibration
15 Grms X/Y
16 Grms Z
16 Grms Z
shock (qualificaiton)
100Hz 20g
1400Hz 1000g
10000Hz 1000g
1400Hz 1000g
10000Hz 1000g
storage temperature
-35 to 70 C
operating temperature
-30 to 60 C
nominal regulated range voltage
48.5 to 52.5V DC (full performance)
23.5V DC min (reduced performance)
23.5V DC min (reduced performance)
data interface
RS485
power consumption
<5 W (idle)
<180 W (max)
<180 W (max)
update rate
5Hz (internal speed controller)
5 Hz (maximum external telemetry)
5 Hz (maximum external telemetry)
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