# Your question: What is the rpm of a jet engine?

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## What is the rpm of a 777 jet engine?

The GE90—installed on some Boeing 777s—is typical in that the fan stage (N1) rotates at a maximum of 2,550 RPM while the compressor stage (N2) rotates at a maximum of 10,850 RPM. The blade tips, at 11,000 RPM, are well above Mach 1, which partially accounts for the high noise levels of a jet engine.

## How many rpm does a fighter jet engine spin?

“The turbine converts the thermal energy generated by combustion back into mechanical energy. It’s the small turbine blades that spin, and they’re connected to a shaft, which is connected to the compressor itself and the fan,” Attia explained. That turbine shaft spins around 20,000 RPM — which is really, really fast.

## What RPM do jet engines idle at?

You should check the engine manufacturer’s recommendations, but a good setting for most piston-powered airplanes is 600-700 RPM. If it is below 600 or up near 800 or 900 RPM, you should have a mechanic make an adjustment to make sure that your airplane does what you want it to do when you close the throttle.

## What is idle RPM in aircraft?

Idle speed, sometimes simply called “idle”, is the rotational speed an engine runs at when the engine is idling, that is when the engine is uncoupled from the drivetrain and the throttle pedal is not depressed. In combustion engines, idle speed is generally measured in revolutions per minute (rpm) of the crankshaft.

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## What is RPM of a jet engine at takeoff?

High turbines turn anywhere from 8,000 to 15,000 RPM.

## How much horsepower does a 747 have?

The power per engine for the two aircraft is seen to be 14 984 horsepower and 1646 horsepower for the 747 and Super Constellation, respectively.

Characteristic Lockheed 1049G Boeing 747
Number of engines 4 4
Total cruise power, hp 6 585 59 934
Power per engine, hp 1 646 14 984
Dry engine weight, lb 3 675 8 600

## What is that RPM of turbines?

Turbines commonly have either two or three blades mounted on a rotor that sit horizontal to the ground. The turbine blades lift and rotate when the wind blows over them. The blades turn a low-speed shaft at about 30-60 rotations per minute (rpm).

## Is 3000 RPM too high?

3k is not high revs… you car can take more, actually it is good for your car to be pushed higher than that but i would not redline it constantly either. IN my daily commute I usually drive in town or traffic and hardly go above 3000-3500 rpms.

## What should RPM be at 70 mph?

70mph = 2413rpm. how do you know your exact rpm?