[Aus-soaring] Winch vers. Aerotow
Hi All, Thought you might be interested to see this comparison between winch launching and Aerotow. Greig Wanless and Roger Druce on Aerotow with Axel Allgaier and myself on Geelong G/C winch. A great day for winching on Saturday with about 15 -20 knots of wind straight down 27 we were consistently getting 2000ft AGL. http://www.youtube.com/watch?v=Ky1leolUCAY Cheers, John ___ Aus-soaring mailing list Aus-soaring@lists.internode.on.net To check or change subscription details, visit: http://lists.internode.on.net/mailman/listinfo/aus-soaring
Re: [Aus-soaring] Winch vers. Aerotow
John, Now that is REALLY weird ; a video comparison between winch launching and aerotow! I find it hard to believe that you missed the obligatory childhood lecture (often repeated through the years), on comparisons: Apples with apples; oranges with oranges. The aerotow box was a total waste of time, and a major distraction. Nice video of the winch launch though, and good footage of the changed topography of the BM airfield. Did you do any soaring off this or any other launch on the day? What is the consensus of the users on the success (or otherwise) of the recently installed launch strips? Cheers, Gary -- Original Message - From: John Parncutt To: 'Discussion of issues relating to Soaring in Australia.' Sent: Monday, April 26, 2010 6:46 PM Subject: [Aus-soaring] Winch vers. Aerotow Hi All, Thought you might be interested to see this comparison between winch launching and Aerotow. Greig Wanless and Roger Druce on Aerotow with Axel Allgaier and myself on Geelong G/C winch. A great day for winching on Saturday with about 15 -20 knots of wind straight down 27 we were consistently getting 2000ft AGL. http://www.youtube.com/watch?v=Ky1leolUCAY Cheers, John -- ___ Aus-soaring mailing list Aus-soaring@lists.internode.on.net To check or change subscription details, visit: http://lists.internode.on.net/mailman/listinfo/aus-soaring -- No virus found in this incoming message. Checked by AVG - www.avg.com Version: 9.0.814 / Virus Database: 271.1.1/2835 - Release Date: 04/26/10 04:31:00 ___ Aus-soaring mailing list Aus-soaring@lists.internode.on.net To check or change subscription details, visit: http://lists.internode.on.net/mailman/listinfo/aus-soaring
Re: [Aus-soaring] Winch vers. Aerotow
Gary
A quick reply re the acceptance of the two take-off strips is:
The strips are a success. However, really as I see it, it is best to
suspend judgement for a year or two. Time will tell. For example, how
will they stand up in the summer heat to ning-nongs turning a glider on
the spot prior to climbing on board for a launch? Main wheels can screw
the bitumen up in this manouvre!
The earth works which created the strips also left significant areas at
the sides disturbed due to drainage shaping of the ground, and this
combined with the stones broomed (vacuum sweeping was reserved for other
areas of established seal subject to resealing - not to be used on new
seal) off the strips after the sealing process means that we have a fair
bit of small loose stone besides the strips and little grass. Bit by
bit some of this stone gets back on the strips such that we will have to
broom sweep again from time to time using our geriatric kit from
Departmental days. For example, you need the tuggies to observe not
crossing the strip when taxiing, if they can avoid it, so that the tug
doesn't blow stones back onto the strip.
We also have here a K13 and Zephyrus with nose skids. They have to
launch beside the take-off strip and move onto it late in the ground
roll after elevator authority is gained. At this point this seems to
work OK. If we did not do that we would, in my view, see significant
damage. The first time you establish a bitumen seal it looks solid but
really there is not all that much there!
Regards
Roger Druce
On 26/04/2010 8:22 PM, Gary Stevenson wrote:
John,
Now that is REALLY weird ; a video comparison between winch launching
and aerotow! I find it hard to believe that you missed the
obligatory childhood lecture (often repeated through the years), on
comparisons: Apples with apples; oranges with oranges. The aerotow box
was a total waste of time, and a major distraction.
Nice video of the winch launch though, and good footage of the changed
topography of the BM airfield.
Did you do any soaring off this or any other launch on the day?
What is the consensus of the users on the success (or otherwise) of
the recently installed launch strips?
Cheers,
Gary
-- Original Message -
*From:* John Parncutt <mailto:jparn...@bigpond.net.au>
*To:* 'Discussion of issues relating to Soaring in Australia.'
<mailto:aus-soaring@lists.internode.on.net>
*Sent:* Monday, April 26, 2010 6:46 PM
*Subject:* [Aus-soaring] Winch vers. Aerotow
Hi All,
Thought you might be interested to see this comparison between
winch launching and Aerotow.
Greig Wanless and Roger Druce on Aerotow with Axel Allgaier and
myself on Geelong G/C winch.
A great day for winching on Saturday with about 15 -20 knots of
wind straight down 27 we were consistently getting 2000ft AGL.
http://www.youtube.com/watch?v=Ky1leolUCAY
Cheers,
John
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Checked by AVG - www.avg.com
Version: 9.0.814 / Virus Database: 271.1.1/2835 - Release Date:
04/26/10 04:31:00
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Re: [Aus-soaring] Winch vers. Aerotow
Reminds me of:
"You take your boots off before you come into the house." :-)
- Original Message -
From: Roger Druce
To: aus-soaring@lists.internode.on.net
Sent: Wednesday, April 28, 2010 6:12 PM
Subject: Re: [Aus-soaring] Winch vers. Aerotow
Gary
A quick reply re the acceptance of the two take-off strips is:
The strips are a success. However, really as I see it, it is best to suspend
judgement for a year or two. Time will tell. For example, how will they stand
up in the summer heat to ning-nongs turning a glider on the spot prior to
climbing on board for a launch? Main wheels can screw the bitumen up in this
manouvre!
The earth works which created the strips also left significant areas at the
sides disturbed due to drainage shaping of the ground, and this combined with
the stones broomed (vacuum sweeping was reserved for other areas of established
seal subject to resealing - not to be used on new seal) off the strips after
the sealing process means that we have a fair bit of small loose stone besides
the strips and little grass. Bit by bit some of this stone gets back on the
strips such that we will have to broom sweep again from time to time using our
geriatric kit from Departmental days. For example, you need the tuggies to
observe not crossing the strip when taxiing, if they can avoid it, so that the
tug doesn't blow stones back onto the strip.
We also have here a K13 and Zephyrus with nose skids. They have to launch
beside the take-off strip and move onto it late in the ground roll after
elevator authority is gained. At this point this seems to work OK. If we did
not do that we would, in my view, see significant damage. The first time you
establish a bitumen seal it looks solid but really there is not all that much
there!
Regards
Roger Druce
On 26/04/2010 8:22 PM, Gary Stevenson wrote:
John,
Now that is REALLY weird ; a video comparison between winch launching and
aerotow! I find it hard to believe that you missed the obligatory
childhood lecture (often repeated through the years), on comparisons: Apples
with apples; oranges with oranges. The aerotow box was a total waste of time,
and a major distraction.
Nice video of the winch launch though, and good footage of the changed
topography of the BM airfield.
Did you do any soaring off this or any other launch on the day?
What is the consensus of the users on the success (or otherwise) of the
recently installed launch strips?
Cheers,
Gary
-- Original Message -
From: John Parncutt
To: 'Discussion of issues relating to Soaring in Australia.'
Sent: Monday, April 26, 2010 6:46 PM
Subject: [Aus-soaring] Winch vers. Aerotow
Hi All,
Thought you might be interested to see this comparison between winch
launching and Aerotow.
Greig Wanless and Roger Druce on Aerotow with Axel Allgaier and myself on
Geelong G/C winch.
A great day for winching on Saturday with about 15 -20 knots of wind
straight down 27 we were consistently getting 2000ft AGL.
http://www.youtube.com/watch?v=Ky1leolUCAY
Cheers,
John
--
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No virus found in this incoming message.
Checked by AVG - www.avg.com
Version: 9.0.814 / Virus Database: 271.1.1/2835 - Release Date: 04/26/10
04:31:00
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