Neo Engine starting and it's sound experience.Spinner cone marking movement.

It's an interesting video of how a neo Engine starts and how a spinner cone marking helps to avoid birds strike during approach and landing(giant eye). Experience the sound on headset.You can also enjoy the eyes persistence of vision.
Here is some interesting question and answer.

What is the rpm of Fan at idle and Max power?

A conventional engine runs the fan and turbine at one speed. The PW1100G-JM allows these components to run at independent speeds. To make this happen, the FDGS sends energy from the N1 rotor through a system of gears, slowing output to the fan. The process alters the normal 1:1 turning ratio to 3:1, or three turns of the N1 rotor for a single revolution of the fan.

Rotor operation speed limits (redline speed limit) - RPM (MAX)
(a) Maximum N1: 100 percent (10047 RPM).
(b) Maximum N2: 100 percent (22300 RPM).

Courtesy: AMM

When Engine is stabilized at Idle RPM following are the basic normal parameters.

Make sure that the parameters at International Standard Atmosphere (ISA) sea level are as follows:.

The EGT is in the range between 914 deg.F (490.00 deg.C) and 1130 deg.F (610.00 deg.C) approximately.
The FF is approximately 600 PPH (270 KPH).

N1 is approximately 19%.

N2 is approximately 59%.

Now calculation starts

N1 19% means 19/100 multiplied by 10047 equals to 1908 RPM

three turns of the N1 rotor for a single revolution of the fan.

So dividing 1908 by 3 equals 636(idle fan rpm).

Rpm of Fan at Max power will be 10047/3 equals : 3349 rpm (3:1 concept)

So my answer is : 636 will be the rpm of fan blade at IDLE power and 3349 will be the fan rpm at max power.

Sources AMM

Видео Neo Engine starting and it's sound experience.Spinner cone marking movement. канала Siju George