CDR - Critical Design Review 1 Agenda Launch Vehicle Recovery - PowerPoint PPT Presentation

49er Rocketry Team The University of North Carolina at Charlotte CDR - Critical Design Review 1

Agenda ● Launch Vehicle ● Recovery Overview ● Subscale Flight Analysis ● Payload ● Safety ● Project Plan The University of North Carolina at Charlotte 2 - 49er Rocketry Team

Launch Vehicle Overview Airframe Dimensions Vehicle Summary Target Altitude 4000 ft Booster (ID) 5 in. Total Length 110 in. Payload (ID) 6 in. Loaded Mass 63 lbm Wall Thickness 1/16 in. The University of North Carolina at Charlotte 3 - 49er Rocketry Team

Payload Section Airframe LD Haack Nosecone Length 9 in . Quasi-isotropic Carbon Fiber Material Length:Diameter 1.5 Inner Diameter 6 in. Material ABS Length 64 in. 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

Modular Fin Can ● Airframe Slot Length = 11.75 in. ● Tapered from 1 in. to 0.5 in. ● Forward Radius = 0.25 in. Component Material Fins Polycarbonate Fin Retainer ULTEM 9085 Boattail ULTEM 9085 The University of North Carolina at Charlotte 6 - 49er Rocketry Team

Booster Airframe Quasi-isotropic Carbon Fiber Material Inner Diameter 5 in. Length 30.5 in. Transition 4 in. 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 7 Modular Fin Can 3.63 Section Mass ( lbm ) Computer Vision 3.53 Motor And Retention 16.5 Primary Payload 11.25 Payload 33.5 Booster Airframe 1.70 Payload Airframe 2.57 Total 29.5 Total 33.5 Booster 29.5 Total 63 The University of North Carolina at Charlotte 8 - 49er Rocketry Team

Motor Selection Total Impulse ( lbf/s) 1147 ● AeroTech L2200 Maximum Thrust ( lbf ) 697 ● Thrust to weight ratio of 7.85 at 63 lbm ● Cost: $279.99 Average Thrust ( lbf ) 495 Burn Time ( s ) 2.3 Total Mass ( lbm ) 10.5 Propellant Mass ( lbm) 5.5 The University of North Carolina at Charlotte 9 - 49er Rocketry Team

Stability Total Mass 63.0 63.5 64.0 64.5 65.0 65.5 66.0 ( lbm ) Ballast Mass 0.0 0.5 1.0 1.5 2.0 2.5 3.0 ( lbm ) Static 2.61 2.68 2.75 2.82 2.89 2.96 3.02 Stability Post-Burnout 3.20 3.27 3.35 3.42 3.49 3.56 3.63 Stability The University of North Carolina at Charlotte 10 - 49er Rocketry Team

Flight Profile ● Flight Profile at 63 lbm ● Max. Velocity = 527 ft/s Max. Acceleration = 335 ft/s 2 ● ● Off the Rail Velocity = 64.8 ft/s Wind Speed ( mph ) Simulated Calculated Percent Difference 0 4221 4268 1.10 5 4177 4244 1.57 10 4116 4178 1.48 15 4077 4078 0.02 20 3986 3955 0.78 The University of North Carolina at Charlotte 11 - 49er Rocketry Team

Recovery - Overview 1. Initial separation at apogee with booster drogue deployment. 2. 1 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 s , 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 Booster Main Parachute Drogue Parachutes Size 96 in. Size 15 in . C d 2.2 C d 1.5 Shape Annular Shape Elliptical Descent Rate 12.12 ft/s Booster Payload Main Parachute Descent 93.94 ft/s Rate Size 144 in. Payload C d 2.2 Descent 133.2 ft/s Rate 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 ○ 30 ft. total ● Attachment Hardware ○ 3/16 in. Quick Links ○ ¼ in. Stainless Steel Eyebolt ○ ⅜ 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 3.4. The University of North Carolina at Charlotte 15 - 49er Rocketry Team

Recovery - Subsystem Components Component Payload Booster Section Section Deployment Bag 1 0 Parachute deployment bag Stratologger CF 2 2 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 5 575.7 512.7 535.2 10 1151.5 1025.5 1070.4 15 1727.2 1538.2 1605.5 20 2303.0 2051.0 2140.7 Within NASA requirement of 2,500 ft. Full drift calculations are located in Section 3.5.10. The University of North Carolina at Charlotte 17 - 49er Rocketry Team

Recovery - Kinetic Energy and Drift Landing KE Section (ft-lb f ) Booster 23.58 Booster Payload with UAS Payload without UAS Booster Recovery 3.17 (s) (s) (s) Payload with UAS 69.28 78.51 72.98 69.92 Within NASA requirement of 90 sec. Payload without UAS 48.27 Nosecone .33 Within NASA requirement of 75 ft-lb f Full calculations are located in Section 3.5.8 and 3.5.9. 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 The University of North Carolina at Charlotte 19 - 49er Rocketry Team

Subscale Flight Results First Subscale Flight Second Subscale Flight Component Recorded Simulated Percent Difference Component Recorded Simulated Percent Difference Apogee (ft) 1605 1670 3.9% Apogee (ft) 1662 1672 0.6% Max. Velocity Max. Velocity 330 340 2.9% 335 328 2.1% (ft/s) (ft/s) Time to Apogee Time to Apogee 10.5 10.6 0.94% 10.5 10.5 0% (s) (s) The University of North Carolina at Charlotte 20 - 49er Rocketry Team

Subscale Flight Results Third Subscale Flight Component Recorded Simulated Percent Difference Apogee ( ft ) 1600 1662 3.7% Max. Velocity 342 329 3.8% ( ft/s ) Time to Apogee 10.5 10.6 0.94% ( s ) The University of North Carolina at Charlotte 21 - 49er Rocketry Team

Subscale Flight Results - Recovery First Flight Second Flight Value Recorded Theoretical Percent Difference Value Recorded Theoretical Percent Difference Apogee ( ft ) 1605 1670 3.9% Apogee ( ft ) 1662 1672 0.6% Descent Time ( s ) 38 36.5 3.9% Descent Time ( s ) 37.2 40.2 7.5% Landing KE ( ft-lb f ) Landing KE ( ft-lb f ) 62 52 16.0% 60 50 16.7% The University of North Carolina at Charlotte 22 - 49er Rocketry Team

Subscale Flight Results - Recovery Third Flight Value Recorded Theoretical Percent Difference Apogee ( ft ) 1600 1662 3.7% Descent Time ( s ) 36 39.4 8.6% Landing KE ( ft-lb f ) 60 50 16.7% Full analysis of subscale flights is Located in Section 3.3. The University of North Carolina at Charlotte 23 - 49er Rocketry Team

Payload Overview The University of North Carolina at Charlotte 24 - 49er Rocketry Team

Deployment Operation Plan The University of North Carolina at Charlotte 25 - 49er Rocketry Team

UAS Operation Plan 1. UAS travels to flight 5. UAS lands outside altitude of 25 ft and waits for sample collection 2. UAS navigates signal towards SRA GPS 6. UAS receives coordinate. sample collection signal, lands in 3. UAS implements SRA, and collects CV once within 50 sample ft of SRA 7. UAS transports sample 10 ft away 4. UAS arrives at SRA from SRA The University of North Carolina at Charlotte 26 - 49er Rocketry Team

Payload Systems Overview The University of North Carolina at Charlotte 27 - 49er Rocketry Team

UAS Overview ● Weight: 5.80 lbs ● Thrust (total): 18 lbf ○ Thrust-to-weight ratio: 3.1 ● 11.2 minute mixed flight time ● Carbon fiber construction ○ Additively manufactured electronics mounts The University of North Carolina at Charlotte 28 - 49er Rocketry Team

UAS Dimensions - Folded 16.0 in . 4.79 in . 1.00 in . 1.25 in . 5.43 in. 5.43 in . 29 The University of North Carolina at Charlotte - 49er Rocketry Team

UAS Dimensions - Unfolded 12.1 in . 14.4 in . With Propellers 16.6 in Width = 28.6 in . Length = 26.4 in . Height = 5.86 in . 5.86 in . Diagonal = 33.9 in . The University of North Carolina at Charlotte 30 - 49er Rocketry Team

UAS Frame ● 3 Plate Carbon Fiber ○ 0.0625 in . thick ○ High Modulus Twill Weave ● Female-Female Threaded Aluminum Standoffs ● Modularity allows for ease of assembly The University of North Carolina at Charlotte 31 - 49er Rocketry Team