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ME 441 Senior Design

ME 441 Senior Design. CUA Hovercraft – Class of 2008-2009. Current Status 11/6/08. Joe Cochrane, Aldo Glean, James McMahon, Omar Monterrubio, Kalin Petersen. Status Overview. Hull Lift engine Lift fan Skirt Thruster housing Alternator testing. Hull.

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ME 441 Senior Design

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  1. ME 441 Senior Design CUA Hovercraft – Class of 2008-2009 Current Status 11/6/08 Joe Cochrane, Aldo Glean, James McMahon, Omar Monterrubio, Kalin Petersen

  2. Status Overview • Hull • Lift engine • Lift fan • Skirt • Thruster housing • Alternator testing

  3. Hull • Location/space debate in McCarthy • Need to build a rolling table or cart to assemble hovercraft on • Cart built and hull assembled by Thursday 11/13/08

  4. Lift Engine • Modified current engine mount for facilitated access • Investigate and finalize carburetor modification by Tuesday 11/18/08

  5. Lift Fan Impeller model from last year’s hovercraft was determined to be sufficient Ordered on Thursday 10/30/08 Estimated arrival by Wednesday 11/19/08

  6. Skirt • Assemble pattern by Tuesday 11/11/08 • Trip to Cambridge Canvas & Sail Loft postponed till Friday 11/14/08 due to schedule conflicts

  7. Thruster Housing • All materials have been purchased • Galvanized steel (0.01” thick) purchased for housing shroud • Construction of housings to be completed by Tuesday 11/18/08

  8. Alternator Testing Test performed on 11/5/08 (see figures) Current engine to alternator pulley ratio of 3.5 to 2.625

  9. Alternator Testing • Attempted using a pulley ratio of 5 to 2.625 • The belt slipped and the engine stalled because it was loaded down by the alternator • Subsequent tests using different alternator ratios with the goal of producing higher output voltage performed by Thursday 11/13/08

  10. Questions? For more information: http://students.cua.edu/51mcmahon/CUA_Hovercraft_2008_2009/

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