1. 1 SHOT II Communication System Experiment University of Minnesota Max Schadegg, Cole Christensen, Ian Macmillen, Steve Haviland June 10 th, 2010 University of Minnesota SHOT II

2. 2 SHOT II Mission Overview June 10 th, 2010 University of Minnesota SHOT II Our SHOT II experiment will demostrate the ability of our radio to transmit experimental data to a ground station. The payload will consist of a power source, a radio, and a microprocessor with data stored on an external memory storage device. The data stored is a sample of experimental data that our nanosatellite's flight computer would package and send to the radio for transmission to the ground. Using the data sample, we want to verify the performance of our radio at high altitude.

3. 3 SHOT II/NS-6 Connection June 10 th, 2010 University of Minnesota SHOT II Our experiment will support our satellite mission by validating the communication hardware that will be on our satellite. We will also validate the software we will be implementing to send large data packets from our satellite to the ground, as well as sending other commands back up.

4. 4 SHOT II Design June 10 th, 2010 University of Minnesota SHOT II -Flight Computer: Gumstix Overo Air -Communication: 2.4 GHz Microhard radios, 2.1 dbi whip antennas, 12 dbi Yagi antenna -Thermal: Resistive heaters, HOBO -Power: CR123A 3V Batteries, 9V for heaters -Total Mass: ~700 grams -Flight string attachment:

5. 5 Expected Results June 10 th, 2010 University of Minnesota SHOT II -The main purpose of this experiment is to validate our communication at high altitudes, but using our initial setup of a whip antenna on the ground, we expect a communication failure at some given range. -One of the main results we would like to take away from this experiment is quantifying this altitude. -We expect this loss of communication to occur somewhere around 40-50 thousand feet.

6. 6 Comm. Demonstration June 10 th, 2010 University of Minnesota SHOT II -Command and Control Demonstration - Payload inspection