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Most Recent Contest Entries (3 total)
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New Technology Provides Reliable, Less Expensive, Dynamic Control Of Air And Watercraft Propeller Pitch |
Page Views: 266 |
Transportation |
| G Paul Baker JR, Denham Springs, LA US |
Votes: 11 |
10/17/2008 |
Currently, propeller pitch control uses three approaches: it is based upon either hydrolic oil pressure, mechanical control using lateral motion along the axis of the drive shaft, or electric motor control with the drive motor embedded in the hub. All three of these techniques are either expensive to manufacture and install, or expensive to maintain due to high wear rates or the close machine tolerances required.
The First Image is a conceptual sketch of the Angular
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Bedbug Camper |
Page Views: 110 |
Consumer |
| Mark Lorris, Byron Center, MI US |
Votes: 3 |
10/17/2008 |
Introduction
Aside from the bed-on-wheels “teardrop” designs popular in the 1940’s, there is at present no commercially available hard-shell camping trailer light enough to enable towing by a small car. Although 1 in 12 U.S. households with vehicle ownership already have an RV, not every young (or middle-aged, or old) couple who would like to get away for a weekend wants or needs a fifth-wheeler (which needs a truck to haul it), 4000-lb trailer, or motor
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Grail Pneumatic Two-Stroke Engine |
Page Views: 15,544 |
Transportation |
| Matthew Riley, Wichita, KS US |
Votes: 6 |
09/10/2008 |
White Paper Grail Pneumatic Two-Stroke Engine
This is a proposed clean emissions pneumatic two-stroke engine that does not have normal Two-Stroke cross contamination of oil and fuel (oil and fuel are not mixed).
Intake occurs when piston moves up by creating a vacuum under Piston Check Valve (6) (closed) and Piston (8) within the Engine Crankcase (16), (One-way) Intake Reed Valve & Throttle Plate (9) (IRVTP 9 opens) allow outside ambient air to enter Engine Crankcase (16). Simultaneously
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