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I want to add to answers an obvius but commonly overloked source of vibration, compressed air vibration. Air as it moves through engine gets compressed violantly and then goes through ignition and expansion till it exits the cylinder through exhust manifold and catalic converter. it vibrates so intensly that it can potentially bust the exhust canister in an ...


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The common denominator in ICE and jet engines is probably imbalances of rotating masses. ICE's have additional vibrations which are due to the firing of the different cylinders. The firing itself is a source of vibration. Depending on the condition of the engine and the fuel, the vibrations can intensify. As additional source of vibration is the torque ...


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From out-of-balance forces, caused by rotating and / or reciprocating masses. Lots of published theory about this. A quick google search gave the following: https://www.researchgate.net/publication/322720390_A_new_closed-form_method_for_inertia_force_and_moment_calculation_in_reciprocating_piston_engine_design https://www.sciencedirect.com/topics/...


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Yes, indeed it creates a reaction torque equal and in opposite direction in the frame of the airplane. All the engine mounts have diagonal braces designed to transfer the propeller's torque to the wing or mount. It is immediately noticeable in a helicoper with a disabled rudder propeller and will cause imminent danger of crash because it causes the copter to ...


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The engine mount (connection) is responsible for the maximum horizontal force on the plane including the effect of the thrust, and its weight. ADD: The pictures below show how the engine is attached (mounted) to the pylon, which is attached to the wing. The simple connections (19a & 19b) make me hesitate to think they can resist the torque (rotated ...


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For every action there is an equal, but opposite, reaction. Never found a case that this is not true. Torque reaction on the P51 even caused uneven tire wear: https://www.aopa.org/news-and-media/all-news/2007/august/pilot/north-american-aviation-p-51d-mustang So, if you open the bonnet or hood of a car and run the engine with it in neutral, then blip the ...


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Yes - for certain applications. Low-energy, low-temperature, small installations, possibly 'accessory' power where providing a bit of weak rotary power to some point of machinery would be difficult but a good heat gradient is at hand and can be utilized - generally things where you have a heat source above your alcohol boiling point but not providing nearly ...


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Although, there is a perfectly acceptable answer, I wanted to give another perspective (/analogy) that sprung to mind (See at the end of the answer). in the mean time: TL;DR: the plane brakes are probably on. Take the example the embraer 170 specs which has one of the shortest take off distances of a commercial plane: the take off distance is between 1150 ...


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Brakes are used. And tyre wedges are also used. Turbo prop has the blades feathered to not produce any thrust. A jet is producing enough mass flow to run and little thrust.


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