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Analysis of Propeller Design and Motor Selection for Fall 2006 Team Project

This document outlines the key aspects of the propulsion system designed by Team 4, including the geometric properties of the propeller, motor specifications, and power supply considerations. The team selected a propeller with a diameter-to-pitch ratio of 0.8, achieving an advance ratio of 0.9713, with specific operating parameters such as a speed of 129.3 ft/s and a thrust coefficient of 0.8. The chosen motor is a Rimfire Brushless Outrunner, complemented by A123 Racing Lithium-Ion batteries and a Castle Creations Phoenix-80 speed controller, with an overall cost estimation for the components provided.

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Analysis of Propeller Design and Motor Selection for Fall 2006 Team Project

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  1. Propulsion QDR 2 AAE 451 Fall 2006 Team 4 Tung Tran Mark Koch Matt Drodofsky Matt Lossmann Ravi Patel Ki-bom Kim Haris Md Ishak Andrew Martin

  2. Overview • Geometric Propeller properties • Motor Selection • Power Supplies • Cost Breakdown

  3. Propeller Geometries • Chose a P/D of 0.8. • This yields an advance ratio of 0.9713

  4. Propeller Properties • τ = .8 • V = 129.3 ft/s • J = .9713 • β = 57.85º Where: Tau = P/D R = propeller radius

  5. Motor Selection • Rimfire Brushless Outrunner • 42 – 60-800 • 11.1V – 18.5V • 60 Amps Continuous Current • Weight – 9.5 oz. • Kv – 800 RPM/V • Power – 1.48hp • Price - $79.99

  6. Battery Selection • A123 Racing Lithium Ion batteries • 5 cells • 70A continuous discharge • 2300mAh per cell • 3.7 V per cell • 70 grams per cell • Cost - $60.00

  7. Horsepower Calc

  8. Speed Controller • Castle Creations Phoenix-80 Brushless Motor Control • 80A continuous power • BEC of 3A • Price - $135.99

  9. Cost Estimation • Motor - $79.99 • Speed Controller - $135.99 • Batteries – $60.00 • Propeller - $2.49 • Total with Speed Controller – $278.47 • Total without Speed Controller – $142.48

  10. Questions?

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