CubeSat Team Final Presentation Team Members: Dylan Blackshear Todd Estep Gregory Lemmer Trevor McCarthy Juan Parducci Kimberly Scheider Nathan Schwinn
De-Orbit Device Speakers: Todd Estep, Juan Parducci, Kimberly Scheider
Problem Statement
Background Information NASA Echo 1 Satellite
Introduction Main Objective Develop a satellite de-orbit system Parameters Inexpensive Reliable Minimum Weight and Volume
Nitinol
Prototype Construction
Conclusions & Future Work Viable Inflation Technique Precise Benzoic Acid Measurements Attachment Mechanism CubeSat and P-Pod Launcher Integration Sounding Rocket Flight ?v=1X3rVFHgKys&feature=yout u.be ?v=1X3rVFHgKys&feature=yout u.be (14:30)
De-Orbit Deployment System Greg Lemmer Nathan Schwinn
Overview of P-POD Launchers California Polytechnic State University (Cal Poly) first developed a P-Pod Launcher Simplistic design consisting of a rectangular frame and spring Designed for 1U-3U
O-POD Requirements Withstand 25 G Loads Launch CubeSat at 1.6 m/s Minimal Weight Design Successfully pass vibration test
O-POD Sounding Rocket Designed for the RockSat-X Program Size and weight of O- POD can be used in most sounding rocket flights RockSat-X Deck Plate Dimensions
O-POD Components Top/Bottom Plates Side Plates Back Plate Pusher Plate Spring Ring
O-POD Component Weight Aluminum 7075-T651 High Strength to Density Ratio Ease of Manufacturability
O-POD Spring Design
O-POD Launch Spring
Computer Model O-POD History O-POD 1.0
O-POD O-POD 2.0 O-POD 2.1
O-POD O-POD 4.0 O-POD 4.1
O-POD 4.0 Stress Analysis Max deflection: 3.78e-3 cm 37.8 μm
O-POD 4.0 Vibration Analysis Mode 7 Frequency: Hz Max deflection: 1.75 cm Mode 10 Frequency: 137 Hz Max deflection: 2.79 cm
O-POD Future Work Vibration Testing Center of Gravity Testing Quick Release Mechanism Spring Redesign (depends on final satellite mass)
Sounding Rocket Team Electronics/Communications Members: Trevor McCarthy Dylan Blackshear
ASIM Device Appliqué Sensor Interface Module Contents: AT90USB1287 Microprocessor 48 input/output pins USB Port Located microprocessor datasheet Unable to locate ASIM datasheet
Input/Output Pins 48 total pins Divided into six ports (A…F), each with eight pins (0...7) All ports serve as 8-bit bidirectional input/output ports Only ports D, E, and F are also able to serve external interrupt functions*. No datasheet located, or port labeling of ASIM. Understanding the location of these ports and pins is crucial in the development of C-code. Team used trial and error method to map all input/output ports and pins.
ASIM Map Sketch
Data Acquisition/Commands The AVR-Studio is useful in initializing ports and pins, and defining them as I/O. Must be used in conjunction with Putty terminal to actively send a command or subscribe to an incoming data source.
Future Work Further understanding of the Putty terminal software, and it’s ties with the AVR-studio and xTEDS. Datasheets, “.hex” files, “.c” files, and xTEDS that proved useful are stored for use by future teams. With the help of Joshua Birch, a corrected CubeFlow Manual has been created.
Questions?