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all modern helicopters use jet turbine engines.
if you look at older helicopters, they suddenly changed from lattice construction with one or two people on board to multi-occupancy solid bodied ones.
this is when most manufacturers changed from piston to jet engines (during the Vietnam War it was noticeable (watch old episodes of MASH or the film apocalypse now)
a few very small and self-build helicopters still use piston engines and are generaly 4 to 8 cylinders... the problem is they're relatively low powered compared to jet turbines and massively heavier.
What else can I help you with?
Can thermosteel be used to repair a pitted cylinder wall?
No. If it minor pitting, honing the cylinder may be enough. If it is deep, it will need to be bored and an oversize piston used or the cylinder can be sleeved.
How do you replace a starter in a 1994 Toyota truck 2whdr 4-cylinder R22 engine with the manufacture date of 1994 which is asking for a 1995 part?
it may have a used engine from a 95 truck put in it. Or, it could be a late 1994, and Toyota was installing 1995 starters on the last of the production run for that year.
How three ignition coils are used on a six cylinder engine with direct fire ignition?
if it is direct fire wasted spark each coil has 2 posts for spark plug wires and fires twice per revolution, so one coil would run cylinder 2 and than 6 or whatever the opposing cylinder would be. 3 coils would run a total of 6 cylinders. generally direct fire only refers to not having a distributor
When do you have to use a oversize headgasket?
After the cylinder head or block have been skimmed. For example. An engine has overheated and the cylinder head has been warped. The head is removed and milled so that the mating surface is flat again. The thickness of the oversized gasket will depend on the amount of material removed. If a thicker gasket wasn't used, the compression ratio may be raised or the pistons may come into contact with the valves
Is the word Round an adjective?
It is, when used to mean shaped like a circle or cylinder
Number of cranks in a six cylinder engine?
No of cranks used in 6 cylinder engine
How many spark plug is used in four stroke and four cylinder engine?
Generally there is one spark plug per cylinder.
Will an autometer number 19304 tachometer work on a 20hp Kohler twin engine?
A tachometer works by measuring how many time a spark plug fires. If the tachometer is designed to determine the rpm of an 8 cylinder engine it will not show the correct speed of a 2 cylinder engine. If I remember correctly if the tachometer designed for an 8 cylinder is used on a 4 cylinder engine it will show twice the number of actual rpm. So an 8 cylinder tachometer used on a 2 cylinder engine will show 4 times the actual rpm of the 2 cylinder engine. If you check around there are special tachometers designed for 2 cylinder engines.
What metals are used to make engine cylinder?
alloys
What was the twin engine lockheed electra used for?
Pratt & Whitney nine cylinder radial engine
Which motors can lift a helicopter?
Many motors are suitable. A Compact Radial 2 cylinder engine used in many kit helicopters can give you 60 hp.
How many cylinder is used in two wheeler?
Depends!!In fact, most of the two wheelers have single cylinder engine but some, like Harley Davidson V3 heart has double cylinder engine which consume space and seems bulky.Some bikes may have two exhaust pipes coming-out from the same cylinder, seems like having two cylinders.
What unit of measure can be used when testing engine compression and cylinder leakage?
When testing engine compression and cylinder leakage, the unit of measure commonly used is pounds per square inch (psi). Compression tests typically measure the pressure generated within each cylinder when the engine is cranked, while cylinder leakage tests quantify the amount of air escaping from the cylinder under pressure. Both measurements help assess the engine's health and efficiency.
What are the effects of a spark plug not working?
A spark plug is used to ignite the fuel/air mixture inside the cylinder of an internal combustion engine. If the spark plug isn't working, the cylinder won't fire. In a multi-cylinder engine, this will result in rough running and loss of power. In a small, single cylinder engine, this will result in the inability to start the engine.
What is a head gasket used for on a 1999 Ford Expedition?
The head gasket is used to seal between the engine cylinder head and the engine block
How many cylinders are in a 2-stroke engine?
The number of cylinders in a 2-stroke engine can vary widely depending on the design and application of the engine. 2-stroke engines can have a single cylinder, but they can also be configured with multiple cylinders, such as twins or larger multi-cylinder setups. Common examples include small single-cylinder engines used in motorcycles and chainsaws, as well as larger multi-cylinder engines used in some outboard motors and performance vehicles. Ultimately, the specific number of cylinders is determined by the engine's intended use and design.
How are internal and external combustion different?
In terms of engines, an external combustion engine such as a steam engine burns fuel outside of the pressure cylinder used to drive the piston. An internal combustion engine such as a petrol or diesel engine burns the fuel inside the pressure cylinder used to drive the piston.
