Neo Engine starting and it's sound 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 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