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From: Dale Rogers <dale.r@cox.net>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Subject: [FlyRotary] Re: To Fuse or not to Fuse
Date: Mon, 2 May 2005 13:14:19 -0400
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Bill Dube <bdube@al.noaa.gov> wrote:

> The keystone of Bob's endorsement of fuses:
> 
> When the failure manifests itself by opening the breaker or
> fuse likelihood of recovering the system by replacing a
> fuse or pushing in a breaker is very, very small.
> 
> Beneath it all, this is what all the fuse versus circuit breaker 
> discussions hinge on.  It is an incorrect assumption, in my experience.
> 

Bill,

   Part of Bob's position is based on the assumption that 
the overall system is designed with others of his principals in mind.  One of those principals is to wire and fuse 
big enough to avoid putting the wire at risk from ordinary 
failures.  Another is to not have any flight-critical 
systems that are not redundant.

   In my mind, that still doesn't preclude using resettable 
circuit protection for flight-critical systems.  But I 
can't see the sense of putting in breakers for everything.

Regards,                            (___
Dale R.                      |----==(___)==----|
COZY MkIV-R13B #1254               o/ | \o
Ch's 4, 5, 16 & 23 in progress