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  #45  
Old June 15th 07, 09:51 PM posted to rec.aviation.military,rec.aviation.military.naval,sci.military.naval
Vince
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BlackBeard wrote:
On Jun 15, 11:47 am, Pat Flannery wrote:
Vince wrote:

they have noticed that

What they should have noticed is how that side-by-side rotor layout
causes sand and dust to rise around the fuselage during landing,
blinding the pilot.


This differs from any other rotary wing craft how?


very very high disk loading with yaw effects


6. HIGH DOWNWASH VELOCITY

Because of the high disk-loading of V-22, the downwash velocity is about
twice that of any conventional helicopter, and because of the
side-by-side placement of the prop-rotors there are two distinct
downwash wakes that are transverse to the flight direction. This has
several operational implications that bear on safety issues. The most
critical one, I believe, is the effects of downwash on landings at night
in a desert environment – a challenge in any helicopter, but more
difficult, and potentially dangerous, in the V-22.

http://www.g2mil.com/V-22safety.htm