One distinctive feature of the P-38 Lightning is its counter-rotating propellers. In most single engine aircraft, several aerodynamic forces combine to pull the plane to the left, a set of effects pilots learn early as “turning tendencies.” With twin engines, designers can cancel out much of this behavior by having the propellers spin in opposite directions. On the P-38, the blades rotate outward at the top, which balances the forces from each engine and eliminates a critical engine. The result
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Boats have COUNTER-ROTATING PROPELLERS: This is an example of an inboard vessel with twin engines. This is called a twin screw. Each propeller spins counter to one another when they are in forward. This mitigates what is called side effect. If both propellers spin the same way when in forward, the boat would drift to one side, causing the captain to need to correct steering often.#howtoboating #howto #boating #boat #yachting #yacht #driving #drive #props #right #left #inboard | How to boating
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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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Aviator_Raza on Instagram: "Gear mechanism of a counter-rotating propeller In a counter-rotating propeller system, engine power is transmitted to a reduction gearbox that uses a planetary gear mechanism to drive two coaxial propellers in opposite directions. The engine shaft drives a central sun gear, which meshes with multiple planet gears rotating inside a ring gear. The gearbox splits power such that the planet carrier drives one propeller while the ring gear drives the second propeller throu
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