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Forum: Rotorheads

24th Feb 2012, 09:31

Replies: 18

Mi26 Downwash Velocity

Views: 7,389

Posted By spheritech

Crab, My mistake for air density which is 1,225...

Crab,
My mistake for air density which is 1,225 kg/m3 as you pointed out.
Concerning the use of induced velocity insted of free stream velocity I believe the truth is somewere in between. It...

Forum: Rotorheads

23rd Feb 2012, 15:24

Replies: 18

Mi26 Downwash Velocity

Views: 7,389

Posted By spheritech

The formula is: downwash= 2*sqrt{gross...

The formula is: downwash= 2*sqrt{gross weight*g/{2*density*rotor surface}} 2 times the theoretical induced velocity

For your example
-gross weight =28200 kg
-g=9,81m/s2
-density=1 (ISA sea...

Forum: Rotorheads

8th May 2010, 12:12

Replies: 1,141

Helicopter crash off the coast of Newfoundland - 18 aboard, March 2009

Views: 340,765

Posted By spheritech

horror box: "The Puma has only a limited icing...

horror box: "The Puma has only a limited icing clearance, in some ops and no blade de-icing capability at all"

As a matter of fact, the AS332 was the first helicopter to be certified by FAA for...

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