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The University of Nebraska–Lincoln team presents a preliminary design review for a launch vehicle aimed at achieving an altitude of 5,280 feet while employing a dual-deployment recovery system. This mission includes deploying a payload at 1,500 feet and ensuring that all components are recoverable for relaunch. Key elements include stability, flight simulation, vehicle safety, and advanced recovery systems utilizing avionics such as the Perfectflite StrattoLogger and Raven altimeters. The project emphasizes hands-on engineering experience and collaboration through outreach events.
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Preliminary Design Review NASA University Student Launch Initiative University of Nebraska–Lincoln 2012-2013
Team Overview • Mission • Build a launch vehicle to reach an 5,280 feet altitude • Use a dual-deployment recovery system • Deploy a payload at 1,500 feet • Recover all components in a relaunchable condition
Kinetic Energy Landing Velocity Terminal Velocity Ejection Charge is set for 1500ft Ejection Charge is set for 1000ft
Stability Characteristics • OpenRocket Model • Will need to be verified • Mass (with motor): 35.9 lbs • CG: 66.9 inches • CP: 77 inches
Launch Characteristics • Candidate Motors • 75mm diameter • Aerotech L1520T-P • Simulation Parameters • 10 foot guide rail • Rail velocity: 43.32 feet/sec • Thrust-to-weight ratio: 10.72
Nosecone • Characteristics • Von Kármán (LD-Haack) • 5.5:1 Fineness • Communications • BRB 900 GPS Transmitter • Antenna
Transition Assembly • Components • 2 6-inch bulkheads • One small step for man • One 6-inch diameter polycarbonate plate • One GoPro camera • Two eyebolts • Material • Alumium case • Dimensions • Length – 6”
Avionics • Components • PerfectfliteStrattoLogger • Featherweight Raven • Concept of Operation • Activated by external key switches • Primary charge fired by both altimeters • Secondary charge fires 5 seconds later by Raven
Recovery • Mounting • Nosecone Tethered to Transition • Transition Tethered to Booster • Forged U-Bolts • Concept of Operations • Drogue @ Apogee • Main @ 1,500-Feet
Booster Assembly • Components • 98mm MMT + Retaining Ring • Fins x 3 • Coupler • Material • Carbon Fiber • Fiberglass (8oz) • Dimensions • Length 50 inches
Fins • Material • 1/8-inch G10 fiberglass • Fiberglass • Vinyl Ester Resin • Construction • Laser cutting • Hand sanding • Vacuum Bagging • Assembly • Mounting to MMT • Bond to booster • Tip to tip
Outreach • Previous Activities • Engineering Week • Astronomy Day • Lockheed Martin Space Day • Current Collaboration • Water rocketry • Hosting Robotic Competition • Connect a Million Minds