QB50 System Requirements Document

FIPEX on QB50 Date: 06.02.2013--- DRAFT---- Issue: 1.0.2ICD Page: 23 / 255. Attitude ControlThe CubeSat shall provide attitude control during measurement with a pointing accuracy of+/-10° and pointing knowledge of +/-2° (TBC).6. Cleanliness and ContaminationAll materials shall meet or exceed the following outgassing criteria:TML ≤ 1.0% .CVCM ≤ 0.1% .Where possible, materials shall be selected from ESA and NASA approved lists andprocessed in such a way as to minimize contamination.7. Handling, Operating and Ground ConditionsThe Science Unit shall be handled in a cleanroom environment (class 100.000, ISO 8). ESDprotection protocols shall be followed (details TBI).The sensor unit mounted with tests sensors can be fully operated under standardenvironmental conditions for ground testing. In operation (Full operation mode of the sensorunit) the sensitive element of the sensor is heated to about 600 degree. Therefore noflammable materials shall be placed nearby. The sensor should not be touched.Sensor Units with Flight sensors shall only be operated under low pressure conditions(max. allowed pressure 10 -4 bar). Flight sensors must not be touched.8. Storage ConditionsThe sensor unit with tests sensors should be stored under constant standard conditions(about 20 degree, relative humidity < 80%). The storage time should not exceed 2 years.Flight sensors (and sensor units with flight sensors attached) can only be stored for 3 monthunder these specified conditions.Is a storage time of more than 3 month necessary the sensors must be stored under anitrogen protection atmosphere during the whole storage time.9. ThermalAt least one thermal sensor will be used to monitor the temperature inside the CubeSatenclosure. This will be in addition to the thermistors in the Science Unit which are used forscientific measurement.Name:ILR-RFS_FPXQB50_ICD_1000