New answers tagged piston-engine
1
The principle in general is known as the thermal ramjet: pass the air through a specially-shaped duct and heat it on its way through.
The Meredith effect applies specifically to intermediate circulatory systems which pump a special coolant fluid around in order to heat the air. Inline engines benefit from such systems because most cylinders cannot receive ...
1
1) For any thermal engine, energy efficiency is directly correlated to temperature, while power density is indirectly correlated to temperature as well. Because radiator temperature isn't very high, a jet engine using radiator heat is very inefficient and bulky.
2) For a ICE engine, majority of waste heat is carried away by the exhaust so amount of energy ...
3
Compared to a turbojet engine, the heating (from cylinder fins) of the working fluid (air) in an radial engine is relatively small, and so will be the possible thrust augmentation via the Meredith effect.
Better results can be had by dumping the engine exhaust into the cooling air stream exiting the engine, and directing this blend of spent engine cooling ...
0
a magneto is a coil that reacts to a magnet fitted on the shaft in order to generate electricity for the spark plugs alone. is already set and timed for spark. it is redundant for this reason and independent of the alternator that generates auxiliary electrical power. is a vital component meant to still maintain spark power for emergency situations, but not ...
2
You know, in a gasoline engine, we're putting gasoline and air into a cylinder in the engine, and then stuff happens, and plane goes zoom.
Well, the gas and air won't light itself on fire; it must be lit by something, and at a very specific time.
So, it uses a spark of electricity, in a "spark plug".
This shot of electricity is made the old ...
answered Mar 10 at 19:45
Harper - Reinstate Monica
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15
A mag is in effect a completely self-contained old-style generator/points/coil/distributor ignition system all crammed into a housing the size of two blocks of butter.
The drive off the engine accessory case spins an internal permanent magnet a/c generator, which energizes the primary windings of a built-in ignition coil, whose electromagnetic field is ...
31
A magneto is a gear driven electric generation device connected to the crankshaft of the engine. It supplies the ignition system (spark plugs) with power.
Each engine has two magnetos. Each cylinder has two plugs. Each magneto supplies one plug in each of the cylinders. This makes the ignition system redundant. If a magneto fails, the other magneto can ...
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