Page 186 - Intro to Space Sciences Spacecraft Applications

REFERENCES '1' [j*(OO 47
Spacecrafi Systems
173
EPHEMERIS
MAY BE ON
INFORMATION
,0 THE GROUND
-HAL
CONTROL LOGIC
SENSORS ACTUATORS
OR ClRCUlTRY
L ----_____ 1
OFFSETS CONTROL
AND RATES TOROUES
SPACECRAFT
EOOY

DISTUREANCES
Figure 8-4. Basic attitude reference and control system.
MAGNETIC -
SOLAR RADIATION
GRAVITV GRADIENT -

AERODYNAMIC
1 ,d, I
100 1o.Ooo 100,m

Figure 8-6. Solar radiation propeller torque.