95K views · 690 reactions | What are Counter-Rotating Propellers | factpilot6 | Facebook
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These Louisianans used an airboat to zoom around town as winter storm brings ice and snow to the southern U.S. https://abcn.ws/3diHXT0 | ABC News
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Austin's Airboat, 427ci LS, 4.5L Whipple Supercharger Austin has recently finished building his custom airboat. He was able to acquire his Borowski engine locally about a year ago. Austin knew it would take a lot of torque to get his 80-inch propellers spinning. This Whipple supercharged LS was ideal for the task having 1,100 lb-ft of torque across the RPM band. Getting them spinning is one thing. Spinning them fast is another thing. This LS can rev. Austin’s gear box has the props spinning 3,00
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Austin's Airboat, 427ci LS, 4.5L Whipple Supercharger Austin has …
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Contra-rotating propellers boost ship propulsion efficiency by over 10 percent compared to conventional designs. Read the full story at 🔗 https://sci.sx/682012081 In this video: How the propellers spin in opposite directions during a test run in the cavitation tunnel at the Norwegian Ocean Technology Centre. Credit: Norwegian University of Science and Technology 📸 Follow us on Instagram for more exciting content https://www.instagram.com/sciencex.physorg/ #MaritimeInnovation #EnergyEfficiency
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5.7K views · 15 reactions | Contra-rotating propellers boost ship...
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221K views · 1.1K reactions | How Reversible Propellers Enhance Ship...
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What are COUNTER-ROTATING PROPS: There is a big difference between these two boats. The first boat shown has one prop for each engine. Each engine spins counter to one another to avoid side effect. If both props spin the same way in forward, the stern will drift to one side, making a difficult to handle. The other vessel has two engines with two props each. Each engine has its own counter rotating blades. #howtoboating #howto #boating #propellers #props #engines #blades #captain #sideeffect #wal
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