The discussions of safer fence design and ground-looping techniques are very
worthwhile, but if press and other reports are correct perhaps we should also
discuss the merits of launching while downbursts are in the vicinity or on the
strip.
----- Original Message -----
From: Anthony Smith
To: [EMAIL PROTECTED] ; Discussion of issues relating to Soaring in
Australia.
Sent: Tuesday, February 27, 2007 3:49 PM
Subject: Re: [Aus-soaring] RE: Another fatality
Typically it will either:
- ride up the nose and then break through the canopy and
then run along the canopy sides
- or miss the nose (because the nose is too low to collect
the wire) and simply break through the canopy and then
continue at through the canopy at the wires height on the
fence posts.
It is unfortunate that the height of the top strand (or the
electric wire) on a typical fence is also the typical height
of a pilots neck in a glider.
A simple wire cutting device mounted just inside the canopy
would be suitable for the first type of entry. The second
type of entry (which is probably what happened with the
Puchatek) is a lot harder to deal with except for a steel
tube cage inside the canopy to deflect the wires.
The accident that I was first (bystander) on the scene of,
the pilot was lucky and went through the fence at a sideways
angle after a failed last second ground loop. He caught the
wires across his face instead, but survived to be still
flying today.
> Please excuse my ignorance, but where does the wire enter
> the glider?
>
> Can it break through the perspex of the canopy?
> Or does it slip up the nose and enter into the space
> between the canopy and the fuselage?
>
> If the wire enters the glider through the space between
> the canopy and the hull, then it would only take a very
> small cutter inside that space to cut the wire. (Not a
> whole 'roll cage').
>
> Michael
>
>
> > What about the devices the Kiwis use to go through
> > electric fences? I've seen one on a Std Cirrus, the
> > pilot said he'd needed it twice. It was a small device
> > on top of the nose designed to catch wire and cut it.
> >
> > -----Original Message-----
> > From: [EMAIL PROTECTED]
> >
> > Yes in the Netherlands i is compulsory due to very small
> > paddock size.
> > On 27/02/2007, at 7:41 AM, Derek Ruddock wrote:
> >
> > > I believe it has been mandatory for a number of years
> > > in one European county (Holland?) to have wire strike
> > > protectors fitted. These look like mini roll cages,
> > > > with wire breakers, and fit inside the canopy I
> > > remember seeing a glider in Australia (Paul Matthews?)
> > > flying > with one some years ago
>
> > >> -----Original Message-----
> > >> John Parncutt Sent: Monday, 26 February 2007
> > >>
> > >> In the mean time it would not be unreasonable to look
> > > at fence designs, if
> > >> only at the relatively short sections at the ends of
> > the runway >> where
> > > the
> > >> majority of these incidents are likely to happen.
> > >>
>
>
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