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Forum: Rotorheads

23rd Feb 2012, 14:24

Replies: 18

Mi26 Downwash Velocity

Views: 7,398

Posted By lucaberco

Thanks, dClbydalpha!! :D

Thanks, dClbydalpha!!

:D

Forum: Rotorheads

23rd Feb 2012, 11:49

Replies: 18

Mi26 Downwash Velocity

Views: 7,398

Posted By lucaberco

Thanks, WillDAQ! Just FYI, the application...

Thanks, WillDAQ!

Just FYI, the application is a major motion picture. One of the big action sequences involves an Mi26. Asking this question is due diligence for all the obvious safety reasons,...

Forum: Rotorheads

23rd Feb 2012, 10:37

Replies: 18

Mi26 Downwash Velocity

Views: 7,398

Posted By lucaberco

Thanks, Coyote! One final go-over; because I...

Thanks, Coyote!

One final go-over; because I think it's making sense.

√(Weight÷Rotor Diameter) x (Rotor Diameter x 2)

Is this correct? I'm assuming the 210 figure that you used was the Mi26...

Forum: Rotorheads

23rd Feb 2012, 08:59

Replies: 18

Mi26 Downwash Velocity

Views: 7,398

Posted By lucaberco

Hi there Coyote!! Thanks for taking the...

Hi there Coyote!!

Thanks for taking the time. So if I take the loaded weight of 109,350 lbs, per your calculations, it would look something like this:

√109,350÷8,656.8 x 210 = 51.50 fps, or...

Forum: Rotorheads

23rd Feb 2012, 07:44

Replies: 18

Mi26 Downwash Velocity

Views: 7,398

Posted By lucaberco

Mi26 Downwash Velocity

Could some kind soul please check my math? I need to calculate an approximate figure for downwash velocity for the Mi26 (!!)

So:

Following the law that Force = (Mass) x (Acceleration), rotor...

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