3-AXIS ATTITUDE READOUT
System Components:
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OPTICAL ENERGY TECH.
ONE OR TWO SUN SENSORS
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OPTICAL ENERGY TECH.
ONE IR EARTH SENSOR
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MICRO AEROSPACE SOLUTIONS
ONE MEMS IMU
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Predicted System Performance:
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ATTITUDE READ-OUT ERROR ~ DEGREES
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ORBIT REVOLUTIONS
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OPERATION FUNCTION:
• Sun Sensors Correct IMU Drift Whenever Sun is Seen
• Earth Sensors Correct Yaw Drift
• Kalman Filter Maintains Attitude During Dark Orbit Period
ADDED COMPONENTS FOR ATTITUDE CONTROL
ALAMEDA APPLIED SCIENCES' VACUUM ARC THRUSTERS
THRUSTER PARAMETERS:
• Vacuum Arc Thrusters (VAT) Provide a Very High Specific Impulse ( ISP = 1,500 Sec.)
• A Pair of These Thrusters Can Provide the Following Estimated Attitude Control Parameters for Spacecraft of Various Masses:
| Spacecraft Mass |
VAT System Power |
Time for 90° Maneuver |
Estimated System Mass |
| 10 Kgrams. |
10 watts |
2.34 hours |
2 Kgrams. |
| 100 Kgrams. |
100 watts |
3.30 hours |
4 Kgrams. |
| 500 Kgrams. |
200 watts |
5.22 hours |
8 Kgrams. |
LINKS TO COMPONENT MANUFACTURERS:
Micro Aerospace Solutions, Inc. of Melbourne Florida
http://www.Micro-A.net
Alameda Applied Sciences Corp of San Leandro, CA
http://www.AASC.net
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Click here to find out about INFRARED (IR) BLACKBODY SOURCES
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