QB50 System Requirements Document

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QB50-SYS-1.5.11. Every science packet shall be tagged with the position of theCubeSat at the time that the RDY line goes high (indicating thatthat packet is ready in the science instrument), accurate to within1 km. Position error estimates shall be provided for each positiontag.QB50-SYS-1.5.12. Every science packet shall be tagged with the real time that theRDY line goes high (indicating that that packet is ready in thescience instrument), accurate to within 1 seconds. Time errorestimates shall be provided for each time tag.QB50-SYS-1.5.13. CubeSats shall be fitted with devices to ensure immediatecessation of their radio emissions by telecommand, wheneversuch cessation is required under the provisions of theseRegulations. (This requirement is adopted from the ITU).QB50-SYS-1.5.14. If UHF is used for uplink, the radio receiver shall have an AdjacentChannel Rejection Ratio (ACRR) of at least 100dB.This is to avoid possible blocking of the receiver or interference from nearby QB50 satellites.Teams should also be aware that such operation will require very quick
1.7 GeneralQB50-SYS-1.7.1.QB50-SYS-1.7.2.QB50-SYS-1.7.3.QB50-SYS-1.7.4.QB50-SYS-1.7.5.The CubeSat shall be designed to have an in-orbit lifetime of atleast 3 months.The CubeSat shall not use any materials that have the potential todegrade during the 2 years storage duration after assembly.Deployment switches shall be non-latching (electrically ormechanically).Remove Before Flight (RBF) and Apply Before Flight (ABF) items,including tags and/or labels, shall not protrude past thedimensional limits of the CubeSat extended volumes (as defined inFigure 2 and Figure 3 ) when fully inserted.All RBF items shall be identified by a bright red label of at leastfour square centimetres in area containing the words “REMOVEBEFORE FLIGHT” or “REMOVE BEFORE LAUNCH” and the name ofthe satellite printed in large white capital letters. (See Figure 4)REMOVE BEFORE LAUNCHQB50 – MYCUBESATFigure 4: Example of RBF labelQB50-SYS-1.7.6.The CubeSat provider shall transfer housekeeping and “quick look”sensor data to the Mission Control Centre (MCC) in near real timefollowing reception on the ground. The format of this data, andthe composition of “quick look” sensor data, is TBD.Mission Control Centre (MCC) InterfaceThe QB50 MCC will perform the following functions:1. Receive “quick look” science data from all of the CubeSat operation centres, from theirrespective CubeSat(s)2. Receive telemetry and house-keeping data from all of the CubeSat operation centres,from their respective CubeSat(s)Issue 3 15 5 February 2013
Page 1 and 2: QB50System Requirementsand Recommen
Page 4: Science Payload Interface Control D
Page 7 and 8: 1. CubeSat System Requirements1.1 S
Page 9: Figure 3: 3U CubeSat extended volum
Page 12 and 13: possibility of using other team’s
Page 16 and 17: 3. Display which ground station is
Page 18 and 19: 2.3 Spacecraft ContaminationQB50-SY
Page 22: 4.1 MechanicalAs shown in Figure 5,
Page 25 and 26: Attachment A: INMS Interface Contro
Page 27 and 28: CHANGE RECORDIssue Date Sections ch
Page 29 and 30: 5.9.4 OBC_SU_ON (0xFB) ............
Page 31 and 32: 2 Normative and Informative documen
Page 33 and 34: CUBESAT side connector to attach to
Page 35 and 36: 4.1.1 SWITCHED Power PinsThe +5, +3
Page 37 and 38: 4.4 Power BudgetThe power budget is
Page 39 and 40: 5.3 Command & Response Handling5.3.
Page 41 and 42: 5.4 Command Packet Structure to Sci
Page 43 and 44: 5.7 SU State Transition DiagramThe
Page 45 and 46: 5.9.2 Script TIME Field - @tTime-ta
Page 47 and 48: 5.9.9 SU_STIM (0x04)This command wi
Page 49 and 50: 5.9.12 SU_CALM (0x07)This command r
Page 51 and 52: 5.9.14 SU_HK (0x09)The HOUSE_KEEPIN
Page 53 and 54: 5.10 Example SU Command Sequence Sc
Page 55 and 56: 7 Attitude ControlThe CubeSat shall
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FIPEX on QB50 Date: 06.02.2013--- D
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Attachment C: m-NLP Interface Contr
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TITLE: QB50 m-NLP Science Unit Inte
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QB50 System Requirements Document

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