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7

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 ...


5

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.


3

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 ...


2

In an engine with a mechanical throttle control, there is an idle-stop screw of some form. It ensures that the linkage returns to a specific location when the applied throttle is released. By the same token, a microswitch that is placed to be depressed when on-idle will close (on-circuit) when the throttle linkage commands power above idle. Microswitches are ...


2

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 ...


2

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/...


1

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 ...


1

Restricting the airflow into an air-breathing engine cannot increase its power output. In the case of an internal combustion engine with valves in it, here is the critical fact you are missing: It takes time for the cam system in an engine to push open and then let close the valves in each cylinder. As the engine spins faster and faster, it becomes ...


1

If you shut off the ignition for the cylinder you wish to disable, the action of the piston rising and falling in the cylinder (with no combustion) will tend to load the combustion chamber with motor oil, which then fouls the spark plug- so that when you want to turn that cylinder back on, it refuses to fire. That puts the driver in a perilous situation, if (...


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