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The P-POD Payload Planner's Guide

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P-<strong>POD</strong> <strong>Payload</strong> Planner’s <strong>Guide</strong>: Revision B – 5/15/00 16 of 19<br />

<strong>The</strong> Poly Picosatellite Orbital Deployer has been designed to provide a reliable and<br />

inexpensive solution to picosatellite deployment in space. It is the intent that universities<br />

and industry will be able to use the P<strong>POD</strong> as a means of deploying standardized<br />

multifunctional satellites in space. <strong>The</strong> Cal Poly WESTEC team has developed<br />

picosatellite specifications for universities and industry wishing to use the P<strong>POD</strong> to<br />

deploy space bound experiments. <strong>The</strong>se specifications can been seen in DWG 220-112-<br />

001 in Appendix B. An exploded view of the P<strong>POD</strong> mechanical assembly is shown in<br />

DWG 610-102-001. It uses a pin-puller actuator to release the spring-loaded door. A<br />

compression spring provides the initial force to deploy three CubeSats loaded in the<br />

P<strong>POD</strong>. <strong>The</strong> picosatellites will be loaded into the device using the configuration shown in<br />

DWG 610-103-001.<br />

Design Criteria<br />

<strong>The</strong> following criteria was used in the development of the P<strong>POD</strong>:<br />

• Temperature Extremes: -40°C to 65°C<br />

• Maximum Force during Launch: 15g’s<br />

• Mass of the deployer must be equal to or less than 1.50 kg [3.3 lb]<br />

• <strong>The</strong> satellites will weigh no more than 1kg<br />

• <strong>The</strong> satellites will be 10cm X 10cm X 10cm<br />

• Must ensure that the picosatellites will not tumble upon launch<br />

• Must deploy the satellites at an exit velocity of no greater than 0.3 m/s [1 ft/s] (the<br />

slower the better but they must get out)<br />

• Must provide a faraday cage to shield against any premature transmission from the<br />

picosatellites<br />

• Must not be a threat to any other mission aboard the rocket<br />

• Must be able to accommodate satellites with solar panels mounted on the external<br />

walls<br />

P<strong>POD</strong> Design Results<br />

Material: 7075-T7351 AL<br />

Mass (empty): 1.67kg [3.7 lb]<br />

Fasteners: 6-32 machine screws and lock washers<br />

Spring Specs: Constant = .85 lb/in<br />

Free Length = 15 in.<br />

Solid Ht. = 1.5in

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