PD BLOWER POLAR MOMENT OF INERTIA WR2

[hirschaplin]

Hello,

I recently procured a PD blower with 2-lobe rotors. Part of the agreement, the vendor provided a blower data sheet. When I study the data sheet I see that they provide the POLAR MOMENT OF INERTIA (WR2): 29 LB-FT2 for the blower.

What does POLAR MOMENT OF INERTIA (WR2): 29 LB-FT2 mean and how can I use this information? Why do they provide this information to me?

 

[1503-44]

Polar moment of inertia is needed to calculate the moment (force x distance, or torque) and the time needed to accelerate an object to a given rotational speed.
It is the equivalent of Force = Mass x acceleration for rotational dynamics, rather than linear dynamics.

https://en.m.wikipedia.org/wiki/Moment_of_inertia

--Einstein gave the same test to students every year. When asked why he would do something like that, "Because the answers had changed."

 

[1503-44]

https://blog.orientalmotor.com/moto...cd9409ca|29f9d0cf-31a4-4208-888f-afa84f6535ce

https://blog.orientalmotor.com/moto...6abde034|773a672a-9bbb-411d-ae39-0276910ef191

https://blog.orientalmotor.com/motor-sizing-basics-part-3-acceleration-torque-and-rms-torque

--Einstein gave the same test to students every year. When asked why he would do something like that, "Because the answers had changed."