Propulsion Preliminary Design Review Phoenix Aerospace Propulsion Team

Propulsion Preliminary Design Review Phoenix Aerospace – Propulsion Team Brian Darr – Lead Jon Peterman Andy Wiratama 12/6/2020 Phoenix Aerospace AAE 451 – Fall 2001 1

Objectives Preliminary selection and analysis of propulsion system - Motor Speed Control Batteries Propeller Gearbox Preliminary cost analysis of propulsion system 12/6/2020 Phoenix Aerospace AAE 451 – Fall 2001 2

Moto. Calc Inputs Wing & Airfoil - Wing sizes calculated from constraint analysis Calculations for one wing since Moto. Calc assumes one wing One wing calculations are conservative due to 50% theoretical drag reduction for tandem wing configuration Airfoils from preliminary selection (Selig, Wortmann, …) Area = 1272 in 2 Span = 100. 8 in Cl = 0. 55 Airframe - Weight = 52 oz. (structure, radio gear, rate gyro) No landing gear (negligible effects when compared to configuration with landing gear) Flying Field - Altitude = 600 ft Temperature = 72° F (Mollenkopf temperature ? ) 12/6/2020 Phoenix Aerospace AAE 451 – Fall 2001 3

Propulsion Inventory Model Electronics Turbo 10 GT - No longer available Still used for analysis Astro Cobalt - High current draw Large battery pack for endurance Max. Cim Max 15 - High current draw Large battery pack for endurance Graupner Speed 400 - Under powered Requires large battery pack to attain flight speed Kyosho Le Mans 240 S - Under powered Requires large battery pack to attain flight speed 12/6/2020 Phoenix Aerospace AAE 451 – Fall 2001 4

Propulsion Configurations Model Electronics Turbo 10 GT - - - Battery: Panasonic 3000 Ni. MH; 6 cells Speed Control: Generic High Rate ESC; 0. 003 Ohms; 0. 7 oz Drive System: Generic 17 x 10 in Propeller; 6: 1 Gearbox Weight - Moto. Calc predicted weight: 70. 8 oz - Constraint predicted weight: 81. 6 oz Predicted endurance - At design point, 100% throttle: 8 min 45 sec - Max endurance, 74% throttle: 30 min 54 sec Cost: - Motor cost: $65. 00 (MSRP) - No speed controller purchase required Moto. Calc Opinion - Motor not at peak efficiency, battery weight would increase to reach peak efficiency Sedate flyer with possible aerobatic maneuvers 12/6/2020 Phoenix Aerospace AAE 451 – Fall 2001 5

Propulsion Configurations Kyosho Endo. Plasma 16 T - - - Battery: Panasonic 3000 Ni. MH; 6 cells Speed Control: Generic High Rate ESC; 0. 003 Ohms; 0. 7 oz Drive System: Generic 16 x 10 in Propeller; 6: 1 Gearbox Weight - Moto. Calc predicted weight: 71. 1 oz - Constraint predicted weight: 81. 6 oz Predicted endurance - At design point, 100% throttle: 7 min 18 sec - Max endurance, 66% throttle: 32 min 30 sec Cost: - Motor cost: $24. 99 (Tower Hobbies) - Speed controller purchase may be required Moto. Calc Opinion - Motor not at peak efficiency, battery weight would increase to reach peak efficiency Sedate flyer with possible aerobatic maneuvers 12/6/2020 Phoenix Aerospace AAE 451 – Fall 2001 6

Propulsion Configurations Kyosho Atomic Force 17 T - - - Battery: Panasonic 3000 Ni. MH; 7 cells Speed Control: Generic High Rate ESC; 0. 003 Ohms; 0. 7 oz Drive System: Generic 16 x 11 in Propeller; 6: 1 Gearbox Weight - Moto. Calc predicted weight: 73. 1 oz - Constraint predicted weight: 81. 6 oz Predicted endurance - At design point, 100% throttle: 6 min 41 sec - Max endurance, 61% throttle: 36 min 46 sec Cost: - Motor cost: $24. 99 (Tower Hobbies) - Speed controller purchase may be required Moto. Calc Opinion - Battery temperature exceeds suggested maximum temperature limit Sedate flyer with possible aerobatic maneuvers 12/6/2020 Phoenix Aerospace AAE 451 – Fall 2001 7

Propulsion Configurations Trinity Sapphire 17 T - - - Battery: Panasonic 3000 Ni. MH; 6 cells Speed Control: Generic High Rate ESC; 0. 003 Ohms; 0. 7 oz Drive System: Generic 15 x 10 in Propeller; 6: 1 Gearbox Weight - Moto. Calc predicted weight: 72. 8 oz - Constraint predicted weight: 81. 6 oz Predicted endurance - At design point, 100% throttle: 7 min 29 sec - Max endurance, 60% throttle: 38 min 33 sec Cost: - Motor cost: $27. 99 (Tower Hobbies) - Gearbox will need to be purchased - Speed controller purchase may be required Moto. Calc Opinion - Motor operates efficiently at full throttle Sedate flyer with possible aerobatic maneuvers Best performance of analyzed propulsion systems 12/6/2020 Phoenix Aerospace AAE 451 – Fall 2001 8

Summary & Conclusions Summary of Moto. Calc results Conclusions - Trinity Sapphire appears to be the best propulsion to meet design requirements All four design will be analyzed using other methods (eg: gold. m) Design requirements achievable with low cost, low weight propulsion system 12/6/2020 Phoenix Aerospace AAE 451 – Fall 2001 9