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CRITICAL DESIGN REVIEW. Agenda. Vehicle Design Overview Flight Overview Stability Recovery Subsystem Payload Subsystem Propulsion Subsystem Education Engagement. Budget Timeline Future Work. Vehicle Design Overview. Details Length: 79.3 inches Diameter: 4 inches Weight: 9.8 pounds.
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Agenda • Vehicle Design Overview • Flight Overview • Stability • Recovery Subsystem • Payload Subsystem • Propulsion Subsystem • Education Engagement • Budget • Timeline • Future Work
Vehicle Design Overview Details • Length: 79.3 inches • Diameter: 4 inches • Weight: 9.8 pounds Materials • Airframe: Phenolic Tubing • Fins: Fiberglass
Flight Overview • K454-SK motor • Expected altitude: 5228 ft • Max velocity: 817 ft/s • Mach number: 0.73 • Max acceleration: 363 ft/s • TWR: 13.3 • Drift distance: • 5mph: 520 ft • 10 mph: 1040 ft • 15 mph: 1560 ft • 20 mph: 2080 ft
Stability • Center of Pressure: 64.4 inches • Center of Gravity: 49 inches • Static Stability Margin: 3.8 Cal • Distance to stable velocity: 3.3 feet • Rail exit velocity: 71 ft/s
Recovery Subsystem • 2 StratologgerCF altimeters • TeleGPS tracker • 12 inch drogue deploy at apogee • 60 inch main parachute at 700 feet AGL • 82 ft/s under drogue • Landing at 19 ft/s • Kinetic energy at landing: • 12.5 ft*lbs 9.9 ft*lbs 24.7 ft*lbs
Payload Subsystem • 2 Raspberry Pi computers • Collecting atmospheric data during descent and landing • Video of liquid sloshing: distilled water, saline solution, vegetable oil
Propulsion Subsystem • Pro54 Cessaroni Reload engine mount • AeroPack engine retainer • Fins glued to motor mount tube for strength • Recovery harness mount
Current Status • Subscale flight completed • Materials purchased • Quality control of components • Construction started • Software under development • Education outreach
Educational Engagement • Activity 1: Launch small A and B and C class rockets for 6-8 graders • Activity 2: Balloon rocket for K-3 students, Coke and Mentos Demonstration for K-5 graders • Activity 3: G class rocket demonstration for 12th grade physics class
Future Work • Continue construction • Continue testing • Continue education engagement • Finalize software • Scout location and time for full scale launch • Pursue more funding