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?

"5/9/2007 - EGLIN AIR FORCE BASE, Fla. -- The Air Force Research
Laboratory Rapid Reaction Team has successfully integrated and tested
a science and technology solution to the Air Force Special Operation
Command helicopter brownout problem.

In late 2005, Lt. Gen. Michael Wooley, AFSOC commander, asked the AFRL
commander to find a solution to a problem that is killing his Airmen
-- rotary wing brownouts.

More than 30 AFSOC rotary wing aircraft and 60 servicemembers have
lost their lives due to reduced visibility conditions during landing
in desert environments. Many of the aircraft losses have been
attributed to a condition that helicopter pilots refer to as
"brownout."

"Brownout conditions occur during landing and take-offs from sand or
dirt. The sand and dirt is blown up off the ground and blinds the
helicopter pilots to the surrounding area, much like being in a
whiteout during a blizzard," said Eric Werkowitz, the effort's program
manager who is from the Munitions Directorate here. "

BB

I guess everybody has some mountain to climb.
It's just fate whether you live in Kansas or Tibet...