49er Rocketry Team The University of North Carolina at Charlotte Flight Readiness Review 1
Agenda ● Launch Vehicle ● Recovery ● Payload ● Primary Payload: UAS ● Retention and Deployment ● Camera Vision ● Safety ● Project Plan ● Educational Engagement ● Budget The University of North Carolina at Charlotte 2 - 49er Rocketry Team
Launch Vehicle Overview ● Airframe Dimensions ● Target Altitude ● Vehicle Summary ○ Booster (ID) : 5 in. ○ 4000 ft. AGL ○ Total Length: 111 in. ○ Payload (ID) : 6 in. ○ Loaded Mass: 67.7 lbm. ○ Thickness : 1/16 in. The University of North Carolina at Charlotte 3 - 49er Rocketry Team
Payload Section ● LD Haack Nosecone ● Airframe ○ Length: 9 in. ○ Length: 46 in. ○ Aft Diameter: 6 in. ○ Inner Diameter: 6 in. ○ Material: ABS ○ Material: Quasi-isotropic Carbon Fiber The University of North Carolina at Charlotte 4 - 49er Rocketry Team
Secondary Payload Integration ● Computer Vision (CV) ○ Loacates SRA locations on ascent ● Components ○ Camera (4x) ○ Computer ○ Battery ● Mounting ○ Inner mount - 5.5 in. length ○ camera mount - angles camera 30 deg ○ camera shield - teardrop shape ○ All hardware 3D printed from PETG The University of North Carolina at Charlotte 5 - 49er Rocketry Team
Booster ● Airframe ○ Quasi-isotropic Carbon Fiber ○ 56 in. ● Carbon fiber centering rings ● Fiberglass motor tube ● Carbon fiber motor tube sleeve ● Carbon fiber transition The University of North Carolina at Charlotte 6 - 49er Rocketry Team
Modular Fin Can ● Airframe Slot Length: 11.75 in. ● Fins: Polycarbonate ● Tapered from 1 in. to 0.5 in. ● Fin Retainer: ULTEM 9085 ● Forward Radius: 0.25 in. ● Boattail: ULTEM 9085 The University of North Carolina at Charlotte 7 - 49er Rocketry Team
Mass Budget Booster Section Payload Section Component Mass ( lbm ) Component Mass ( lbm ) Nose Cone 2.15 Booster Recovery 5.90 Launch Vehicle Payload Recovery 7 Transition 1.77 GSOS 9.5 Modular Fin Can 3.63 Section Mass ( lbm ) Computer Vision 3.53 Motor And Retention 15.9 Primary Payload 14.05 Payload 38.8 Booster Airframe 1.70 Payload Airframe 2.57 Total 28.9 Total 38.8 Booster 28.9 Total 67.7 The University of North Carolina at Charlotte 8 - 49er Rocketry Team
Motor Selection ● AeroTech L2200 ● Thrust to weight ratio of 7.31 at 67.7 lbm ● Total Impulse: 1147 ( lbf/s) ● Maximum Thrust: 697 ( lbf) ● Average Thrust: 495 ( lbf ) ● Burn Time: 2.3 ( s ) ● Total Mass: 10.5 ( lbm ) ● Propellant Mass: 5.5 ( lbm ) The University of North Carolina at Charlotte 9 - 49er Rocketry Team
Stability Ballasted Mass Static Post-Burnout Total Mass ( lbm ) ( lbm ) Stability Stability 67.7 0.0 3.0 3.73 The University of North Carolina at Charlotte 10 - 49er Rocketry Team
Flight Profile ● Flight Profile at 67.7 lbm ● Max. Velocity: 527 ft/s Max. Acceleration: 335 ft/s 2 ● ● Off the Rail Velocity: 77.6 ft/s Wind Speed ( mph ) Simulated ( ft ) Calculated ( ft ) Percent Difference 0 3766 3875 2.81 5 3740 3854 2.96 10 3723 3797 1.95 15 3659 3711 1.40 20 3621 3604 0.47 The University of North Carolina at Charlotte 11 - 49er Rocketry Team
Recovery - Overview 1. Initial separation at apogee with booster drogue deployment. 2. One second post-apogee, payload drogue deployment 3a. Booster main parachute deployment at 500 ft 3b. Payload main parachute deployment at 500 ft 4. Sections land within 90 sec. , 2,500 ft radius, and 75 ft-lb f of kinetic energy The University of North Carolina at Charlotte 12 - 49er Rocketry Team
Recovery - Parachutes ● Drogue Parachutes ○ Size: 15 in. ○ Cd: 1.5 ○ Booster Descent Rate: 93.94 ft/s ○ Payload Descent Rate: 133.2 ft/s ● Booster Main Parachute ○ Size: 96 in. ○ Cd: 2.2 ○ Shape: Annular ○ Descent Rate: 12.12 ft/s ● Payload Main Parachute ○ Size: 144 in ○ Cd: 2.2 ○ Shape: Annular ○ Descent Rate: 10.53 ft/s The University of North Carolina at Charlotte 13 - 49er Rocketry Team
Recovery - Payload Harness ● 3,600 lbf Braided Kevlar ○ 45 ft total ● Attachment Hardware ○ 3/16 in. Quick Links ○ 1/4 in. Quick Links ○ 1/4 in. Stainless Steel Eyebolt ○ 3/8 in. Stainless Steel Eyebolt ○ Tender Descender Level 3 The University of North Carolina at Charlotte 14 - 49er Rocketry Team
Recovery - Booster Harness ● 3,600 lb f Braided Kevlar ○ 30 ft total ● Attachment Hardware ○ 3/16 in. Quick Links ○ 1/4 in . Stainless Steel Eyebolt ○ 3/8 in . Stainless Steel Eyebolt Full details of the recovery system are located in Section 3.3. The University of North Carolina at Charlotte 15 - 49er Rocketry Team
Recovery - Subsystem Components Payload Booster Component Section Section Deployment Bag 1 0 Stratologger CF 2 2 Parachute deployment bag Telemega 1 0 B.P. Charge Wells 2 4 Nomex Blankets 1 2 Tender Descender L3 CF Bulkhead 0 2 PerfectFlite StratologgerCF AL Bulkhead 1 1 The University of North Carolina at Charlotte 16 - 49er Rocketry Team
Recovery - Drift Wind Speed Booster Drift Payload Drift With UAS Payload Drift Without UAS (mph) (ft) (ft) (ft) 0 0 0 0 5 476.9 518.2 540.7 10 953.8 1036.5 1081.4 15 1430.6 1554.7 1662.0 20 1907.5 2073.0 2162.7 Within NASA requirement of 2,500 ft. Full drift calculations are located in Section 3.4.9. The University of North Carolina at Charlotte 17 - 49er Rocketry Team
Recovery - Kinetic Energy and Descent Time Landing KE Section (ft-lb f ) Booster 25.56 Booster Payload with UAS Payload without UAS Booster Recovery 8.95 (s) (s) (s) Payload with UAS 67.38 65.03 70.67 73.73 Within NASA requirement of 90 sec. Payload without UAS 46.69 Nosecone .47 Within NASA requirement of 75 ft-lb f Full calculations are located in Section 3.4.7 and 3.4.8. The University of North Carolina at Charlotte 18 - 49er Rocketry Team
Recovery - Tracking Tracker Frequency Location Comm Specialists, Inc 222.330 MHz Booster Shock Cord RC-MP Comm Specialists, Inc 223.010 MHz Payload Shock Cord RC-MP Full specifications are located in Section 3.3.10. The University of North Carolina at Charlotte 19 - 49er Rocketry Team
Vehicle Demonstration Flight Results Launch Day Conditions - 02/22/2020 ● 5 mph crosswind ● 50 °F ● 0.072 lb/ft^3 air density Onboard Equipment ● AeroTech L2200 ● Camera Vision ● UAS ● 4 Perfectflite StratologgerCFs ● 1 Altus Metrum TeleMega The University of North Carolina at Charlotte 20 - 49er Rocketry Team
Vehicle Demonstration Flight Results Apogee (ft) Time to Apogee (s) Velocity (ft/s) Acceleration (ft/s^2) 4098 16.7 920 308 The University of North Carolina at Charlotte 21 - 49er Rocketry Team
Vehicle Demonstration Flight - Recovery Payload Section Booster Section Apogee: 4180 ft. Apogee: 4099 ft The University of North Carolina at Charlotte 22 - 49er Rocketry Team
Vehicle Demonstration Flight - Recovery Payload Section Booster Section ~2190 ft. drift ~1850 ft. drift Full results are located in Section 5.1.2. The University of North Carolina at Charlotte 23 - 49er Rocketry Team
Vehicle Demonstration Flight - Recovery Vehicle Section Landing Velocity (ft/s) Payload 83.2 Booster 14.1 Vehicle Section Landing Kinetic Energy (ft-lbf) Nosecone 332.6 Payload 678.5 Booster 45.4 Booster Recovery 26.8 Full analysis of the flight is Located in Section 5.1.2. The University of North Carolina at Charlotte 24 - 49er Rocketry Team
Test Plan Full vehicle test plans are located in Section 7.1. The University of North Carolina at Charlotte 25 - 49er Rocketry Team
Requirements Verification - Vehicle Full Vehicle Verification Requirements Located in Section 8.4. The University of North Carolina at Charlotte 26 - 49er Rocketry Team
Team Derived Requirements - Vehicle Full Vehicle Verification Requirements Located in Section 8.4. The University of North Carolina at Charlotte 27 - 49er Rocketry Team
Payload Overview The University of North Carolina at Charlotte 28 - 49er Rocketry Team
Deployment Operation Path The University of North Carolina at Charlotte 29 - 49er Rocketry Team
UAS Operation Path 5. UAS lands outside 1. UAS travels to flight and waits for altitude of 25 ft. sample collection signal. 2. UAS navigates towards SRA GPS 6. UAS receives coordinate. sample collection signal, lands in 3. UAS implements CV SRA, and collects once within 50 ft of sample. SRA. 7. UAS transports 4. UAS arrives at SRA. sample 10 ft away from SRA. The University of North Carolina at Charlotte 30 - 49er Rocketry Team
UAS Overview ● Weight: 6.30 lbs ● Thrust (total): 19.4 lbf ○ Thrust-to-weight ratio: 3.1 ● 20 minute mixed flight time ● Carbon fiber plate frame ● Autonomous control with manual override ● Auxiliary Control Surfaces (ACS) The University of North Carolina at Charlotte 31 - 49er Rocketry Team
UAS System Overview The University of North Carolina at Charlotte 32 - 49er Rocketry Team
UAS Dimensions - Folded 16.0 in . 4.79 in . 1.00 in . 1.25 in . 5.43 in. 5.43 in . 33 The University of North Carolina at Charlotte - 49er Rocketry Team
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