Recap of EOSS-128/129

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Student Payload Systems

Santa Clara University



University of Minnesota

Communication Experiment

Our experiment will demonstrate 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.

University of Texas at Austin

Texas 2-Step

The experiment will test verification, sensors, radios, cameras, and antennas.

Texas A&M University

AggieSat Balloon Communications Test

The primary objective is to Provide a high altitude RF test of representative lab communications hardware in preparation for AggieSat�s 2 & 3. The goal is successful data transmission from maximum altitude of a scientific balloon and measure received signal strengths for a prototype flight COMM system using representative lab hardware and link configuration. This data will be used to confirm and improve link budgets.  The secondary objective of this test is to expose supporting prototype hardware for AggieSat 2 and 3 to a near space environment.

Washington University - St. Louis

WashU Balloon Payload

Work in progress.

Utah State University


Test of comm system.

University of Colorado at Boulder

DANDE Communication System Test

An end-to-end test of the DANDE communication subsystem. It will involve the COSGC ground station sending data to and receiving data from the payload at the two frequencies and data rates. The data rates will be in the planned 70cm and 2m ranges but each payload will have to be allocated a separate frequency separated by at least 10-15 MHz. The payloads will also all have to agree to uplink and downlink in the same bands.

Pennsylvania State University

NittanySat Attitude Determination Test

The attitude determination sensors for NittanySat consists of solar sensors and a magnetometer. This instruments will be tested along with the real time attitude solution performed by our computer.

Boston University

BUSAT Magnetometer

The item to be flow is the BUSAT magnetometer and data control system

Montana State University


MSU proposes to fly a variation of its Communications and its Command and Data Handling (CHD) Subsystems, with the intention of also flying the ADCS board. Communications will use a Hamtronics transmitter and receiver pair, receiving (uplink) on 145.98 MHz and transmitting (downlink) on 437.445 MHz. These frequencies are acceptable according to the SHOT Workshop User�s Guide (UN5-0003). MSU participants will include licensed Ham operators. Along with the Tx and Rx boards, a Kantronics TNC will fly to packetize the data from CDH.  One of the objectives of the StratoBuoy balloonsat is to understand what it will take to make the TNC, Tx, and Rx circuit boards space flight ready by removing components for unnecessary functions and by changing out non-space-flight components. Prior to modifying the boards for flight, they will be assembled into a working system and be characterized for later comparison with the flight modified boards.  The ADCS circuit board will run the three axis magnetometer planned for use on SpaceBuoy. ADCS will not be computing the orientation of StratoBuoy on the balloon flight. Data taken by the magnetometer will be transferred to the CDH file system and relayed down to the ground upon uplink command.  Command and Data Handling (CDH) will run a command scheduler to operate StratoBuoy. Data from ADCS will be stored in the CDH file system along with housekeeping data from CDH and ADCS. The command scheduler will also operate a periodic beacon, which will contain housekeeping data and identification. CDH will parse and process uplinked commands, and will downlink data when commanded from the ground.  The overall goal of StratoBuoy is to test intended SpaceBuoy hardware and design concepts. All StratoBuoy work is intended to contribute to the success of SpaceBuoy.

Michigan Tech University

Oculus Gyroscope Functionality Test

The Oculus Project at MTU would like to test the attitude estimation capabilities of three gyroscopes against images from an earth facing camera which will act as a reference point. One additional potential minor objective would be to charge a battery from a solar cell identical to those which will be on the Oculus. If possible we would like to be the bottommost payload.