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Arizona State University Autonomous UAV Project

Kyler Marutzky Motor and Battery Analysis. Arizona State University Autonomous UAV Project. Objective. Motor capable of powering a 20 lb. aircraft. Provide enough energy to the motor for a minimum 40 minute flight. Motor capable of attaining airspeeds of 40 mph. Motors Considered. Electric

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Arizona State University Autonomous UAV Project

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  1. Kyler Marutzky Motor and Battery Analysis Arizona State UniversityAutonomous UAV Project

  2. Objective • Motor capable of powering a 20 lb. aircraft. • Provide enough energy to the motor for a minimum 40 minute flight. • Motor capable of attaining airspeeds of 40 mph.

  3. Motors Considered • Electric • Brushless • Gas • 2-stroke engine

  4. Why Electric? • Less vibration to the rest of aircraft • Photos are being taken. • Center of gravity doesn’t change throughout flight. • Advancements in RC electric motors have made them very efficient.

  5. Configuration • Pusher • Ducted Fan • Puller • Chosen for this application • Twin engine

  6. Motor • Hacker A60-16M • 2276 max Wattage • 65 max Amperage • 35 max Volts • Fully capable of lifting a 20 lb. aircraft. • Over compensated size • Future endeavors.

  7. Type of Battery • Lithium Polymer • Light weight • Capable of supplying more energy than NiMH and Cadmium batteries.

  8. Battery Needed • Capable of supplying up to: • 1500 Watts (~50 Watts/lb., ~20lb aircraft) • 35 Volts • 65 Amps • Flight constraints: • Capable of supplying enough energy to sustain a 40 minute flight. • Capable of providing enough power to the motor for 40mph airspeeds.

  9. Battery Chosen • 9s3p Lithium Polymer • 9-3 cell batteries • 3 cells in series • 3x3x3 cells in parallel • Cell • 4.3 Amp/Hour • 3.7 Volts

  10. Calculations • Peak power to motor • Watts = Current * Volts • Current = 4.3 Amps * 9 = 38.7 A • Volts = 3.7 * 9 = 33.3V • Power = 38.7A * 33.3V = 1288 Watts • Duration of flight • Flight time = Amperage/(Amperage/Hour) • Battery Amperage = 38.7 A/Hour • Average motor amps = 32.1A • Flight time = 32.2A/(38.7A/H) = .83 Hours

  11. In-Flight Analysis

  12. Questions?

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