QB50 System Requirements Document

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2.3 Spacecraft ContaminationQB50-SYS-2.3.1. The CubeSat shall withstand a total contamination of 3.1mg/m 2(TBC before CDR) at all phases of the launch vehicle groundoperation and in flight.2.4 Electromagnetic Compatibility (EMC)QB50-SYS-2.4.1. During prelaunch processing and launch, the spacecraft onboardequipment and ground support equipment (GSE) shall sustain theelectromagnetic fields of up to 10V/m (TBC) within 10 kHz to 40GHz.Issue 3 18 5 February 2013
3. Qualification and Acceptance Testing Requirements for LaunchThe launch vehicle (LV) for QB50 is pending approval by EC/ REA. As it is not certain what thefinal selection will be, a launcher envelope is provided to which the CubeSats should bedesigned. This chapter describes the qualification testing requirements. These requirements arethe worst case among the six considered launch vehicle: VEGA, Cyclone-4, Dnepr, PSLV, Rokotand Soyuz.These values might change before the CDR following the design of the deployment system byISIS. Depending on the quality assurance policy, the acceptance testing requirements will beeither at the CubeSat level (acceptance testing each CubeSat as a standalone) or at a Systemlevel (CubeSat integrated with the launch structure and in launch configuration). This will beclarified before CDR. Until then, it is recommended that the CubeSat teams consider the givenvalues and test conditions for the design of their CubeSats.3.1. Quasi-static and G-loadsThe orientation with respect to the launch vehicle interface is not yet defined. And since thismay vary from team to team, all the CubeSats shall be qualified against the maximum load onall three axes.QB50-SYS-3.1.1.CubeSat shall withstand accelerations of up to 8.3g in all three axes.3.2. Resonant FrequencyQB50-SYS-3.2.1. The CubeSat shall pass a resonance survey and the lowest naturalfrequency of the CubeSat shall be > 90Hz.3.3. Sinusoidal VibrationQB50-SYS-3.3.1. The CubeSat shall pass the sinusoidal vibration tests as per Table 3(TBC before CDR).Table 3: Sinusoidal vibration test characteristicsFrequency, HzAmplitude, g5 1.812 1.845 1.845 360 360 2200 2200 12000 1Issue 3 19 5 February 2013
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Page 4: Science Payload Interface Control D
Page 7 and 8: 1. CubeSat System Requirements1.1 S
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Page 14 and 15: QB50-SYS-1.5.11. Every science pack
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Page 27 and 28: CHANGE RECORDIssue Date Sections ch
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Page 35 and 36: 4.1.1 SWITCHED Power PinsThe +5, +3
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QB50 System Requirements Document

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