The P-POD Payload Planner's Guide

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P-POD Payload Planner’s Guide: Revision B – 5/15/00 6 of 19 3. CUBESAT PHYSICAL AND ELECTRICAL REQUIREMENTS This section of the document shall provide the physical (overall shape, size, weight) and electrical requirements for the CubeSats traveling aboard the P-POD2 system. The supplier testing criteria for the CubeSats is also outlined in this section, and should be used by CubeSat designers to design, construct, and test the satellites before delivery to Cal Poly. Any CubeSat that meets all of the requirements and passes all of the required tests shall be considered flight worthy by the P-POD team. Note: Once the design of P-POD1 is complete, requirements shall also be set forth for flight aboard that system as well. 3.1. Dimensions The CubeSat shall conform to the shape and size specified in the CubeSat specification drawings in Appendix A. 3.2. Mass Properties The CubeSat shall have a maximum mass of one kilogram. A requirement for the location of the center of mass for each CubeSat has not been established, but design teams should consult with Cal Poly before finalizing any design. 3.3. Materials All CubeSats must be constructed of, and contain, only NASA space qualified materials. Please refer to the Cal Poly Integration Team for questions concerning materials. No explosive devices or materials shall be used unless explicitly approved by the P-POD team. All surfaces that are designated on the CubeSat requirements specifications as rail interfacing shall be constructed to minimize friction at the rail/CubeSat interface. All CubeSat shells shall be constructed of 7075 Aluminum to avoid any thermal mismatch between the deployer and CubeSat. 3.4. Electrical Requirements The CubeSats shall have no external electrical wire connections to the P-POD system. 3.5. Testing Requirements A modified, single CubeSat version of the deployer will be provided to each CubeSat design team to allow full environmental testing of the CubeSats. This “Test-Tube” will have mounting brackets for a 3-axis shake table test, and also will serve as the shipping container for the CubeSat.
P-POD Payload Planner’s Guide: Revision B – 5/15/00 7 of 19 3.5.1. Vibration Tests The CubeSats shall successfully complete an independent vibration test simulating the expected launch load conditions. 3.5.2. Thermal Vacuum Tests The CubeSats shall successfully complete an independent thermal vacuum test simulating in-orbit conditions. 3.5.3. Electromagnetic Interference Testing The CubeSats shall successfully complete an independent electromagnetic interference test. 3.5.4. Integration Tests The CubeSats shall successfully complete a vibration test after integration with the P- POD2 system. The CubeSats shall successfully complete a thermal vacuum test after integration with the P-POD2 system. The CubeSats shall successfully complete a electromagnetic interference test after integration with the P-POD2 system. NOTE: The P-POD team must approve all independent testing and proof of results must be provided at time of delivery. 3.6. Adverse Affects of P-POD 3.6.1. Thermal Affects The CubeSat operations shall not thermally affect P-POD2 in any adverse manner. 3.6.2. Electrical Affects The CubeSat operations shall not interfere with operations of the P-POD2 electrical system in any way. 3.6.3. Radio Frequency (RF) Effects The CubeSat operations may not interfere with the P-POD2 communication system in any way.
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