Hi All,
I have to agree with all the guys that are in favour of high vis. My aicraft
has red under ailerons and elevator and a Large red rudder and when i watch
other fly it from the ground is Extremely visible and identifiable from long
range. The white ships i have watched it thermal with quite often disappear
through the turns. Mine sticks out like a Qantas Jet with the large red rear
end.
Maybe small high vis doesn't work. Maybe a technical reason it is different
from the cocpit?
I have checked the temps and don't believe its an issue. I don't operate on a
tarmac strip but then have no need to sit there for hours either.
Most of our time at risk is in the air.
I believe one article i read actually said black against white was the best
contrast but dont quote me.
I find flying gliders and GA that the brightly coloured aircraft (particularly
ultralights ,hanggliders and paras) a lot easier to spot than white gliders.
While Flarms may be ok for our small part of sports aviation, there are a lot
more users up there without them. Thank god there not all white.
Maybe it just an eye sight issue as i approach the dreaded 50. ????????
cheers
Laurie S
> From: [email protected]
> Subject: Aus-soaring Digest, Vol 74, Issue 67
> To: [email protected]
> Date: Wed, 25 Nov 2009 08:55:56 +1030
>
> Send Aus-soaring mailing list submissions to
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> Today's Topics:
>
> 1. Electric Fence (Christopher Mc Donnell)
> 2. coloured markings (David Lawley)
> 3. Re: Reflex car launching ([email protected])
> 4. Re: coloured markings (Colin Collyer)
> 5. Re: forum format (Bob Dircks)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Wed, 25 Nov 2009 07:34:47 +1030
> From: "Christopher Mc Donnell" <[email protected]>
> Subject: [Aus-soaring] Electric Fence
> To: <[email protected]>
> Message-ID: <8b0e02ae68af430eb8fe1cfc57a94...@springsmachine>
> Content-Type: text/plain; charset="iso-8859-1"
>
> Surviving the wires of a fence seems to be not the only problem.
>
> http://www.nzherald.co.nz/nz/news/article.cfm?c_id=1&objectid=10611505
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> ------------------------------
>
> Message: 2
> Date: Tue, 24 Nov 2009 21:22:54 +0000
> From: David Lawley <[email protected]>
> Subject: [Aus-soaring] coloured markings
> To: <[email protected]>
> Message-ID: <[email protected]>
> Content-Type: text/plain; charset="iso-8859-1"
>
>
> Hi all,
>
> On the subject of visibility markings.
>
> Some years ago I found one of my comp F3B models hard to see at a distance in
> its all white paint scheme.
>
> I put large flurescent geen/orange and red stripes on the wing-and it made no
> difference.
>
> Even gliders with red noses and rudders are no more visible at a distance. I
> remember reading somewhere once that small distant objects appear gray/black
> regardless of coulouring. The reason now eludes.
>
> Solar cells are fine on an engine cover, as the doors are not carrying any
> structual load. I wonder about solar cells placed on wing roots however!
>
> Dave L
>
> _________________________________________________________________
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> ------------------------------
>
> Message: 3
> Date: Wed, 25 Nov 2009 09:05:26 +1100
> From: [email protected]
> Subject: Re: [Aus-soaring] Reflex car launching
> To: "Discussion of issues relating to Soaring in Australia."
> <[email protected]>
> Message-ID: <[email protected]>
> Content-Type: text/plain; charset=ISO-8859-1
>
> Hi Ron,
> we did some reflex launching at Bacchus a while back (10-15 years?) and it
> was good fun. We
> used aerotow rope, approx 1000 feet if my memory is correct - the stretch
> meant that you could
> actually get (slightly) greater altitude than that. I can't remember the car
> speed as it took off
> down the runway, but 60-70kph sound familiar. You'll just have to try that
> one. The speed was
> certainly a lot less than people think it needs to be.
>
> The really exciting part is after you leave the ground and due to the
> reduction in drag the rope
> starts to shrink (un-stretch) which gives you the same feeling as a cable
> break or loss of power
> with a winch lanch. If you keep the nose down the rope continues to shrink
> and you have a major
> problem, so the solution is to trust in some greater being and just keep
> pulling back and hope that
> the rope really hasn't broken - not a good feeling and goes against all of
> your training. If you pull
> back the rope (eventually) goes tight again and you have a lovely launch.
>
> We did it for a while but then fear took over and we resorted to normal auto
> tow, with heights
> achieved not much less than the reflex.
>
> Terry
>
>
> On Wed, Nov 25th, 2009 at 12:07 AM, Ron Sanders <[email protected]> wrote:
>
> > Does anybody remember the old "reflex launch" I am not sure if it
> > was
> > ever legal but at Cunderdin I can remember sitting in a Kooka and
> > upon
> > the ready advice the car took off straight down the runway at full
> > bore with no uptake of the slack or anything---the shock was
> > absorbed
> > by a flexible (nylon??) rope section which somewhat later after its
> > rapid extension would give back all that energy after which you then
> > did a "normal" auto tow. I am after approximate lengths of rope and
> > stretch part that people might have used in those days if anyone
> > remembers.
> >
> > Might do it again for a laugh one day!!!!!!
> >
> > Ron
> > _______________________________________________
> > Aus-soaring mailing list
> > [email protected]
> > To check or change subscription details, visit:
> > http://lists.internode.on.net/mailman/listinfo/aus-soaring
> >
> >
> >
>
>
>
>
>
> ------------------------------
>
> Message: 4
> Date: Wed, 25 Nov 2009 09:22:07 +1100
> From: Colin Collyer <[email protected]>
> Subject: Re: [Aus-soaring] coloured markings
> To: "'Discussion of issues relating to Soaring in Australia.'"
> <[email protected]>
> Message-ID:
> <7d60f780d0d4e042acbbd11bdba666684635077...@aeromail.aerosonde.internal>
>
> Content-Type: text/plain; charset="us-ascii"
>
> Hi All
> Re David L's note, my experience is just the opposite. I fly free flight, and
> seeing the models from a distance is important, as you can't time it if you
> can't see it. Generally dark colours on the bottom to stand out against sky,
> and bright colours on the top and 'sides' to stand out on the ground. Silver
> Mylar ( reflective ) is the best method of 'spotting' models at a distance as
> it flashes at least once every circle. Top of tips and fuselage sides work
> best
> Also I fly Scale gliders, and definitely white is not a high vis colour.
> Models with big block rego on the bottom stand out much better.
> To make fluros work, they need to be of a fair area, and outlined in thick
> black, and are better for looking down on, not up.
> The atmosphere and relationship between the sun and viewer has more effect
> than all of the above !
> There was a Kooka at Bordertown white with red tips (nearly half span) with
> big bold GNZ on the bottom, and it could be seen for miles...... maybe that's
> the answer
> Cheers
> Col
>
> -----Original Message-----
> From: [email protected]
> [mailto:[email protected]] On Behalf Of David Lawley
> Sent: Wednesday, November 25, 2009 8:23 AM
> To: [email protected]
> Subject: [Aus-soaring] coloured markings
>
> Hi all,
>
> On the subject of visibility markings.
>
> Some years ago I found one of my comp F3B models hard to see at a distance in
> its all white paint scheme.
>
> I put large flurescent geen/orange and red stripes on the wing-and it made no
> difference.
>
> Even gliders with red noses and rudders are no more visible at a distance. I
> remember reading somewhere once that small distant objects appear gray/black
> regardless of coulouring. The reason now eludes.
>
> Solar cells are fine on an engine cover, as the doors are not carrying any
> structual load. I wonder about solar cells placed on wing roots however!
>
> Dave L
> ________________________________
> Brought to you exclusively by Windows Live Download new and classic emoticon
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> ------------------------------
>
> Message: 5
> Date: Wed, 25 Nov 2009 09:25:45 +1100
> From: Bob Dircks <[email protected]>
> Subject: Re: [Aus-soaring] forum format
> To: "Discussion of issues relating to Soaring in Australia."
> <[email protected]>
> Message-ID:
> <[email protected]>
> Content-Type: text/plain; charset="iso-8859-1"
>
> It seems I'm not doing it wrong, just that I've bbe spoilt by real forum
> format.
>
> Would this group consider a change to a real forum ?
>
> This is 20th century stuff!
>
> Bob
>
> On Wed, Nov 25, 2009 at 1:20 AM, Mark Newton <[email protected]> wrote:
>
> >
> >
> > On 24/11/2009, at 22:35, Bob Dircks <[email protected]> wrote:
> >
> > Am I doing it wrong ?
> >>
> >
> > Yep.
> >
> >
> > .......OR......... am I suggesting that the forum finds a supplier of
> >> better format ?
> >>
> >
> > Aus-Soaring is a mailing list, not a web forum. You're supposed to interact
> > with it using your mail client.
> >
> > It's entirely possible that you've found some third-party web gateway, but
> > that's nothing to do with us, and if it feels clumsy you'd best complain to
> > whoever is providing it.
> >
> > - mark
> > _______________________________________________
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> > http://lists.internode.on.net/mailman/listinfo/aus-soaring
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> End of Aus-soaring Digest, Vol 74, Issue 67
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