1 / 12

Propulsion PDR #2 Brian Barnett Rob Benner Ryan Srogi John Keune Alex Fleck

Propulsion PDR #2 Brian Barnett Rob Benner Ryan Srogi John Keune Alex Fleck. Objectives. Iterative process to match the power needed by the propeller with the power produced by the batteries, motor, and gearbox Choose a propeller for the aircraft

garth
Download Presentation

Propulsion PDR #2 Brian Barnett Rob Benner Ryan Srogi John Keune Alex Fleck

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Propulsion PDR #2 Brian Barnett Rob Benner Ryan Srogi John Keune Alex Fleck

  2. Objectives • Iterative process to match the power needed by the propeller with the power produced by the batteries, motor, and gearbox • Choose a propeller for the aircraft • Develop power requirements for the motor and gearbox

  3. Prop Selection Based on Historical Data

  4. Gold.m Analysis • Iterations were run with different propeller diameters all with pitch to diameter ratio of 2:3 • Gold.m was run with two different propeller sizes from an RPM of 1000 to 3500 • After optimum diameter was selected iterations were run with varying pitch

  5. Highest efficiency at 1500 RPM • Power output much less than 15.3 ft-lbf/sec required • Highest efficiency with required power output achieved is .71

  6. Gold Analysis Results

  7. Gold Analysis Results

  8. Propeller Selection • 15x8 propeller • 3100 RPM • Power output 15.3 ft-lbf/sec • Thrust of .75 lbf • Flight velocity of 20 ft/sec

  9. Gearbox/Motor Requirements • Gearbox • Power output = prop power input = 26.05 ft-lbf/sec • Torque output = .083 ft-lbf • Output RPM = 3100 • Gearbox efficiency = .95 (conservative estimate) • Motor • Power output 27.42 ft-lbf/sec

More Related