I'm curious as to why this discussion showed up here vs. the starved
rec.aviation. rotorcraft? This NG is hurting for any rotorcraft discussion.

--
Stuart Fields
Experimental Helo magazine
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Inyokern, CA 93527
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www.vkss.com
www.experimentalhelo.com


"Richard Riley" wrote in message
...
On Sun, 07 Jan 2007 01:07:59 GMT, cavelamb himself
wrote:

Ron Wanttaja wrote:

On Fri, 5 Jan 2007 12:45:48 -0400, "Juan Jimenez"
wrote:


A quick check on the NTSB site shows eight more accidents between
1/1/1998
and present date. Three of them were fatal. Four in 1998, two in 2000,
two
in 2002, and _nothing_ since then, thank goodness.


A more detailed check shows 16 Mini-500 accidents between 1/1/1998 and
12/31/2000. Same period saw 28 Rotorway accidents.

Between 2002 and 2005, four Mini-500s, 29 Rotorways.

Ron Wanttaja

I'd almost credit those numbers to the difference in rotor inertia.

The Rotorway has a very light (relatively) rotor system with
correspondingly lower rotor inertia.

Big difference between 1-2 seconds to dump the collective vs 4-5.

Maintain thy rotor RPM lest the Earth rise up and smite thee...

An aviation writer friend of mine went to a Robinson training session
a few years ago. He said you had 1.3 seconds to dump the collective
in the R22.

He was thinking of writing an article and calling it "Small Helicopter
Safety: Myth or Fable?"