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Sep 3 7:39pm PDT |
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Home » Projects » Photon Torpedo |
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TEAM University of Illinoi... |
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EVENTS attended Sunrayce 97 |
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USERS project members Willis, Sean |
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Photon Torpedo |
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| Related Content (7) | ||||
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| Wind Tunnel - rear quarter Photo by Sean Willis created 5/18/1998 submitted 2/22/2003 08:57:21 PM Drag and "streamline" data acquisition at Amoco Research Center wind tunnel, May 1998. Vehicle is Photon Torpedo, UIUC's entry into Sunrayce '97. Attempting to locate areas of flow separation, and develop methods to reduce drag on future design derivatives. Note linear bearings under all three wheels, and load cell under rear wheel. | |
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| Rotating Fairing Mechanism Photo by Sean Willis created 6/18/1997 submitted 9/9/2003 09:01:09 PM Rotating Front Fairing, UIUC Photon Torpedo. Carbon fairing included embedded Al c-channel which encompassed a "bearing strap" comprised of shower door rollers oriented both horizontally and vertically. A fiberglass strap was mounted across the fairing, with slots for two bolts (mounted to the suspension upright) to ride in and actually rotate the fairing. Worked surprisingly well... | |
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| Wind Tunnel Testing, Front Fairing Modified Photo by Sean Willis created 5/21/1998 submitted 9/9/2003 08:49:27 PM Front Fairing Extension Wind Tunnel Test for UIUC Photon Torpedo. In an attempt to delay or eliminate stagnation behind the rear fairings, an additional fiberglass mockup of a fairing extension was added to the vehicle and tested for both flow pattern and overall drag reduction. Tests were qualitatively successful, with this photo exhibiting turbulent attached flow. | |
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| On Road Aerodynamic Testing Photo by Sean Willis created 11/9/1997 submitted 9/9/2003 08:43:31 PM Original tuft testing for post race analysis on UIUC Photon Torpedo. The car was run at speed on a rural road (Royal, IL) and stationary observers and chase car attempted to diagnose aerodynamic difficulties. As seen in this photo, stagnation occurs behind the front wheel fairings. Also, vortex pattern at trailing edge of car was implying overall lift on the vehicle. | |
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| Original Al Chassis, Photon Torpedo Photo by Sean Willis created 2/9/1997 submitted 9/9/2003 08:39:14 PM Original Aluminium frame for the 1997 UIUC Photon Torpedo. Frame weighed on the order of 30 lb, but later suffered structural failure while towing back from testing. Mismatched wall thickness on the connection point of the rear suspension subframe did not allow for full weld penetration, and significant loading in the trailer led to catastrophic failure. Later added 80lb of steel reinforcements to ensure safety for the race. | |
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| Upper Body Mold Skeleton Photo by Sean Willis created 10/5/1996 submitted 9/9/2003 09:04:46 PM Upper Body plug skeleton, UIUC Photon Torpedo. Made from plywood cross sections laser cut based on Pro-E cross sections and assembled directly onto a sacrifical work table. Eventually filled with foam, covered with drywall compound, painted, and sanded to finish before shooting chopped strand fiberglass mat for the final body mold. | |
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| Automatic Static Charger Photo by Sean Willis created 6/19/1997 submitted 9/9/2003 08:56:04 PM Photo of UIUC Photon Torpedo Static Charger, taken on first day of Sunrayce '97 at Rose-Hulman. The charger was built with an automated sun tracking system, which used a series of photodiodes placed at the base on both sides of a tall "shade wall". When the wall was normal to the sun, so shade was cast on the diodes and their differential output was zero. When the wall was offset, one side receifed relatively more light, and the voltage difference drove a control circuit to actuate the stand. Heave, finicky, and cumbersome to operate, but it did work after a fashion. | |
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