Subject: Comments requested on a Cozy
From: Paul
Date: 11/21/1999, 10:42 PM
To: zz

X-Mozilla-Keys:                                                                                 
Bill Freeman wrote:

I agree with Paul's safety comment, to which I would add -

1)   You'll need **MUCH** more HP!  Not likely to attain 300 kts
TAS w/o different wing design.  Prob need thinner airfoil and less wing
area, then flaps to recover a workable landing speed.  Also note
that dissimilar canard/wing size canards (like the EZ/Cozys) do
flaps poorly.

2)  Please consider the concept of "greenline" speed.   Most aircraft
cruise moderately above the greenline (DEF: no gust or control input can
create a load large enough to fail the structure) speed, so we have
to slow down 10-20 kts in serious turbulence.    Since the Cozy probably
has a greenline much like my Lone EZ (120 KIAS), you would have
to slow down by around 100 KIAS in turbulence depending on altitude
(IAS vs TAS).  Also consider that a serious gust at 100 KIAS *above*
greenline is *very* likely to convert your Cozy into a fiberglass cloud.

Some folks are cruising beyond the design redline of certain composite
airplanes, and are getting away with it.  It certainly eliminates most (or
all ) of the structural margins which are designed to protect you from
gusts, accidental control bumps and errors in construction.  It's your
butt, but *I* wouldn't fly in it.

Regardless of recent Chrysler ads;   The laws of physics will be strictly
enforced.  Ignorance of the law is no excuse.

Defintion:  An aircraft is a set of design compromises flying in close
formation.  You should understand what they are.

Take care.

Bill


 
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