HokieSat Introduction

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Presentation transcript:

HokieSat Introduction Scott Lennox HokieSat Systems Lead slennox@vt.edu May 30, 2002

AFRL Multi-Satellite Deployment NASA Shuttle Hitchhiker Introduction University Nanosatellites Virginia Tech Ionospheric Scintillation Measurement Mission (VTISMM) aka HokieSat Ionospheric Observation Nanosatellite Formation (ION-F) Utah State University University of Washington Virginia Tech University Nanosatellite Program 2 stacks of 3 satellites Sponsors: Air Force Research Labs, NASA’s Goddard Flight Center AFRL Multi-Satellite Deployment System (MSDS) NASA Shuttle Hitchhiker Experiment Launch System (SHELS)

Multiple Satellite Deployment System Mission 3CS Configuration: ION-F USUSat Dawgstar HokieSat Scenario: Multiple Satellite Deployment System

ION-F Mission Investigate satellite coordination and management technologies and distributed ionosphere scintillation measurements Coordinate on satellite design, formation flying, management mission development, science instruments, mission Design and implement internet-based operations centers, enabling each university to control its satellite from a remote location

Design HokieSat 18.25” major diameter hexagonal prism 12” tall 39 lbs (~18 kg) Isogrid Structure Composite Side Panels 0.23” isogrid 0.02” skins

External Configuration GPS Antenna Crosslink Antenna Solar Cells LightBand Pulsed Plasma Thrusters Data Port Camera Downlink Antenna Uplink Antenna Science Patches

Internal Configuration Crosslink Components Cameras Power Processing Unit Torque Coils (3) Magnetometer Camera Pulsed Plasma Thrusters (2) Camera Battery Enclosure Downlink Transmitter Electronics Enclosure Rate Gyros (3)

Component Placement Side 1: Side 3 and Side 4: Side 4: Side 2: Side 5: PPU Aux Port Science Patch 1 (external) Side 2: Torque Coil Camera Uplink Science Patch 2 (external) Side 3: Downlink Side 3 and Side 4: Torque Coil Thruster Side 4: Camera GPS Preamp S Band Filter Side 5: S Band Preamp GPS Circulator/Isolator GPS Switch Side 5 and Side 6: Side 6:

Component Placement cont. Nadir Panel (bottom): CEE Rate Gyros Battery Box Sun Sensor (external) Downlink Ant. (external) Uplink Loop Ant. (external) Zenith Panel (top): GPS NCLT Box Camera Torque Coil Magnetometer (external) Honeycomb (external) GPS Monopole Ant. (external) GPS Patch Ant. (external)

Pulsed Plasma Thrusters Annode Cathode Ultem Isolator Mica-paper / Foil Capacitor Teflon Fuel Bar Spring Ultem 2300 Thruster Assembly Boron Nitride Insulator