180 likes | 300 Views
Joseph Burns, Tom Fox, Augustine Isitor , Nick Schuyler. High Altitude Balloon Instrument Survival Package. Team Members. Joseph Burns, Team Leader Tom Fox, Parachute P acking Augustine Isitor , AVMap operation Nick Schulyer , Flight Predictions.
E N D
Joseph Burns, Tom Fox, Augustine Isitor, Nick Schuyler High Altitude Balloon Instrument Survival Package
Team Members • Joseph Burns, Team Leader • Tom Fox, Parachute Packing • Augustine Isitor, AVMap operation • Nick Schulyer, Flight Predictions All team member’s responsibilities include • Solidworks designing • Earning amateur radio licenses • Package content programming • Package construction • Material testing
Goals • Gather acceleration data to model CFD simulations • Ensure operation and survival of all electronics • Achieve a successful parachute deployment • Use as much automation as possible in fabrication • Test new tracking equipment • Gain practical field experience
Design of Package • Ballutedesign • Torroidal device to maintain stability • Solidworks used for design • Components fabricated in Epilog Laser Cutting Machine • Use of a removable subassembly for ease of installation and maintenance • Keep remanufacturable components in reserve • Must withstand high impulses in ascent and descent, and withstand extreme environments
Skeleton Design • Material chosen was “LitePly” for skeleton • Webbed I-Beam shape chosen as main rib structures • Liteply was coated with CA glue to provide water resistance and act as an adhesive
Table 1. Material Comparison (Matbase) Fabrication of Skeletal Structure • Assembly was completed with “MonoKote” skin for aerodynamics • Elastic cords chosen as shock absorbers • Parachute lines are attached via 2 points of contact to elastic cords and main package ribs • Styrofoam was chosen for lid with wooden washers • Foam nose added to absorb impact
Design and Fabrication of Removable Frustum • Paper-Foam composite board for mounting of electronic components • Nylon hardware chosen • Contains all electronics for versatility and simplicity
Selection of I Beam over Box Beam • Box beam was originally selected • I-Beam was chosen as its replacement • 28 % reduction in weight with maximum 15% reduction in strength • Faster manufacturing and treatment • Box Beam had stress concentrators and was more brittle
Parachute Deployment • Lid is attached to parachute via clip • Lid is detached by NiCr cutters • Ejected lid will drag out parachute then will detach • Lid is disposable and will fall at low speeds
Testing of Package • Package was dropped 13 meters with various configurations • Testing showed that • 4 points of attachment of parachute deployment clip to lid was best • Subsection and contents survived if no parachute deployed • Calculated terminal velocity, depending on Cd, varies from 14.3 to 16.5 m/s for package with no parachute
Testing for Effectiveness in Cold • All primary electronics were subjected to extreme cold (-40° C) • Insulation was applied as needed • Devices were required to continue working after soaking for >3 hours, 4 hour operation was achieved
Method of Operation • Balloon launched with packages • Units tracked via GPS • Signal sent to drop primary package • Control package descends independently after balloon bursts and is tracked separately • Falling package pulls pin to start 10 minute timer on lid and parachute release • Altitude is monitored, signal is sent to package to release lid and parachute at 60,000 feet • Arrested descent until landing • Package retrieval
Electronic Pack Reliability • Redundant tracking components • Automated and manual triggering of parachute deployment • Quad redundant parachute deployment Intuitive Circuts DTMF-8 Yaesu VX-8G/R RCP Electronics RTrak-HAB Logomatic V2 Vectornav VN-100DV
Tracking of Package • Package has two APRS systems that transmit GPS data on two frequencies • Yaesu GPS has hardware set altitude limit of 18000 m, or 59055 feet, OR speed of 1800 kph, or 1181 mph, before cutout due to regulation • RTrak HAB APRS has 18000 m, or 59055 feet, AND speed of 1800 kph, or 1181 mph limits before cutout • Command package has tracking as well
Dr. Joseph C. Slater P.E. – Advisor Nicholas Baine – Graduate Advisor Stephen Mascarella – Volunteer Expert Steve Overmyer– Volunteer Expert Bruce Rahn– Volunteer Expert Teams 19 Mile High Club, Chutes and Giggles, Foxhound Acknowledgments Questions?
References • References • Adminstration, Federal Aviation. Federal Aviation Regulation (FAR) PART 101. 2 17, 2011. • Andrews Space, Inc. Ballute Reentry Technology. 2008. http://www.andrews-space.com/content-main.php?subsection=MTA0. • Bishop, Jennifer, Chris Byers, and Brandon Kirby. "Shape Memory Polymer Composite Deployment in Near Space Environments:A sub project of theWSU High Altitude Balloon Program." 2007. • Corbett, Michael, John Holtkamp, Sean Stevens, Jessica Williams, and Brian Wirick. "High Altitude Balloon Project." 2006. • Corbett, M, “High Altitude Balloon Flight Path Prediction,” 31st Dayton-Cincinnati Aerospace Sciences Symposium, March, 2006. • Corbett, M, Williams, J, and Holtkamp, J, “Design of a High Altitude Balloon Payload,” 2nd Annual Dayton Engineering Sciences Symposium, October 2006. • Design and Launch of a Reentry Vehicle for Near Space Experimentation. Wright State University, 2009. • Holtkamp, J.C., Williams, J.M., and Corbett, M, “Design of High Altitude Balloon,” 31st Dayton- Cincinnati Aerospace Sciences Symposium, March, 2006. • Kirby. B, Byers, C, Mascarella, S, Pestak, T, Bishop, J, Yelamarthi, K, Wolff, M, Slater, J, Mawasha, PR and Wu, Z, “Engineering Research in Space using a High Altitude Balloon: an Interdisciplinary Senior Design Project,” ASEE-NCS Conference, 2007. • Mawasha, PR and Yelamarthi, K, “Project Management in an Interdisciplinary Senior Design Team,” ASME International Mechanical Engineering Congress and Exposition, 2007. • Mawasha, PR, Yelamarthi, K, Wolff, M, Slater, J, and Wu, Z, “An Integrated Technology Project and its Potential Impact on Interdisciplinary Undergraduate Engineering Experience,” 114th Annual ASEE Conference & Exposition, 2007. • Sharra, Besmira, and Casey Richardson. "Design and Launch of a Balloon Re-entry Vehicle for Free Fall Experimentation." 2010. • Slater, Dr. Joseph C. Main Page. January 6, 2011. http://www.cs.wright.edu/balloon/index.php?title=Main_Page&action=history. • Snyder, B, Bozeman, J, Ilenbiluan, O, Rahn, D, Andras. M, and Yelamarthi, K, "Deployable Truss in a Near Space Environment," ASEE-NCS Conference, 2008. (2nd place, student papers). • Yelamarthi, K, Mawasha, P. R, Rowley, B. A and Bazzoli, T. L, “The Temperature Satellite Project: The Integration of Engineering Experience to First year Students,” ASEE/NCS Spring Conference, April 2004. • Yelamarthi, K, Maurer, J, and White, B, “The Temperature Satellite Project,” NASA’s Great Midwestern Regional Space Grant Meeting, November 2004.