Re: [Aus-soaring] re- Not gliding but flying none the less (ToddSandercock)

2009-10-30 Thread DMcD
So the fact that may be someone sitting around a campfire planning how to unleash a horrible death on anyone on the other side of the globe does not scare you to death? What did you do at work today daddy? I just invented some smart weapon which only kills Moslems. How could you sleep at night?

[Aus-soaring] FW: Glider pilots applying their skills to another activity

2009-10-30 Thread Morgan Sandercock
Yes, but an electric tug doesn’t have to carry the equivalent of 100L of avgas like a “conventional” electric aircraft would for cross-country flying. If you allowed regenerative battery charging, the tug could completely exhaust its battery getting to 3000ft and then recharge just enough on

Re: [Aus-soaring] Launch efficiency

2009-10-30 Thread Mike Borgelt
The electric towplane thing caused me to do the following calculation: Glider at 600m(2000 feet) at 60 knots has a bit less than 1 Kw-h of potential and kinetic energy. Assume 5 Kg of fuel to get it there by towplane.(7litres) That fuel has an energy content of 5 x 43 MJ or 215

Re: [Aus-soaring] re- Not gliding but flying none the less (ToddSandercock)

2009-10-30 Thread Mike Borgelt
At 04:47 PM 30/10/2009, you wrote: I did not start this thread, I just commented on the idea of using UAVs to kill people. It seems strange to me that one might accept this as being OK. That being said, I will sign out. DMcD Was war any less popular when you had to club the other guy

Re: [Aus-soaring] FW: Glider pilots applying their skills to another activity

2009-10-30 Thread Mike Borgelt
At 05:07 PM 30/10/2009, you wrote: For the best efficiency as a windmill, the prop needs to have a large diameter and the delta-V (change in velocity along a streamline) needs to be minimised, indicating that a descent at close to minimum-sink speed would be required for maximum energy

Re: [Aus-soaring] Glider pilots applying their skills to another activity

2009-10-30 Thread Mark Newton
On 30/10/2009, at 11:10, tom claffey to...@yahoo.com wrote: Mike raises an interesting point about older cars. We often hear about getting clunkers off the road because of pollution or fuel economy. Which is especially hilarious when applied to clunkers designed during the 70's oil

Re: [Aus-soaring] males over 55l

2009-10-30 Thread Mark Newton
On 30/10/2009, at 11:33, Mike Borgelt mborg...@borgeltinstruments.com wrote: At 10:18 AM 30/10/2009, you wrote: Perhaps explains some things I've noticed at comps over the years! Tom [almost 46] PS: Airline Pilots in this country [unlike almost every other one] don't have mandatory

Re: [Aus-soaring] re- Not gliding but flying none the less (Todd Sandercock)

2009-10-30 Thread Mark Newton
On 30/10/2009, at 11:52, DMcD slutsw...@gmail.com wrote: Just the thing for dropping hand grenades on Taliban campfires (small, quiet, IR sensor) far more cheaply than using Hellfire armed Predators. Just how do you tell the difference between a Taliban campfire and anyone else's

Re: [Aus-soaring] Glider pilots applying their skills to another activity

2009-10-30 Thread Paul Bart
Can you mention some cars that did please? I was not aware of any that did that well then, particularly if size is comparable. Do not get me wrong, I am no friend of Prius. Cheers Paul 2009/10/30 Mark Newton new...@atdot.dotat.org On 30/10/2009, at 11:10, tom claffey to...@yahoo.com

Re: [Aus-soaring] re- Not gliding but flying none the less (Todd Sandercock)

2009-10-30 Thread Mark Newton
On 30/10/2009, at 12:10, Paul Bart pb2...@gmail.com wrote:. So the fact that may be someone sitting around a campfire planning how to unleash a horrible death on anyone on the other side of the globe does not scare you to death? You gotta be kidding, Paul. People who sit around

Re: [Aus-soaring] Glider pilots applying their skills to another activity

2009-10-30 Thread Mark Newton
On 30/10/2009, at 6:52 PM, Paul Bart wrote: Can you mention some cars that did please? I was not aware of any that did that well then, particularly if size is comparable. Do not get me wrong, I am no friend of Prius. The Prius specifications claim 3.9L/100km, which is equivalent to 60

[Aus-soaring] Prius

2009-10-30 Thread John O'Neill
All, Is this thing a glider or sailplane or something that might leave the ground fly? or what has it to do with soaring. JIMSTP9.gif___ Aus-soaring mailing list Aus-soaring@lists.internode.on.net To check or change subscription details, visit:

Re: [Aus-soaring] FW: Glider pilots applying their skills to another activity

2009-10-30 Thread Catherine Conway
Actually I started this thread to show that gliding was getting a bit of publicity from the quote to the media by Simon. I though that was good. I didn't mean to start an electric car argument - sorry Cath Sent from my iPhone On 30/10/2009, at 5:56 PM, Mike Borgelt

[Aus-soaring] What the Keepit Comp is all about

2009-10-30 Thread Dave Shorter
In case you haven't seen what those competing at Lake Keepit will be flying over next week, have a look at this YouTube clip http://www.youtube.com/watch?v=3_-ULY8qV94 - courtesy of John and Geraldine Clark and a few intrepid Keepit pilots. (That's the glider you're flying Andrew) PS

[Aus-soaring] [Advertising] - German soaring calendar 2010

2009-10-30 Thread Mike Cleaver
G'Day All Once again I have been persuaded to offer the German Segelflug Bildkalender wall calendars for sale in Australia this year, and hope to have them by the time I get home from Lake Keepit, or soon afterwards. These popular picture calendars again feature full colour photos on fine

Re: [Aus-soaring] Electric tugs (was applying skills to another activity)

2009-10-30 Thread Mike Cleaver
At 18:07 30/10/2009, Morgan wrote: Yes, but an electric tug doesn’t have to carry the equivalent of 100L of avgas like a “conventional” electric aircraft would for cross-country flying. If you allowed regenerative battery charging, the tug could completely exhaust its battery getting

Re: [Aus-soaring] Electric tugs (was applying skills to another activity)

2009-10-30 Thread Todd Sandercock
A winch would have to be the most efficient for sure. Would be interesting to work out how much better it is than a tow plane though. Does anyone have any figures on the fuel consumption of a winch?? Todd From: Mike Cleaver wom...@netspeed.com.au To:

Re: [Aus-soaring] Electric tugs (was applying skills to another activity)

2009-10-30 Thread Mark Newton
On 30/10/2009, at 22:31, Todd Sandercock todd_soar...@yahoo.com.au wrote: A winch would have to be the most efficient for sure. Would be interesting to work out how much better it is than a tow plane though. Does anyone have any figures on the fuel consumption of a winch?? Yes. The

Re: [Aus-soaring] Electric tugs (was applying skills to another activity)

2009-10-30 Thread Jim Staniforth
Great topic.   For reference, the self-launching sailplane uses about 3 litres for a three thousand foot launch, including taxiing.   I'm amazed that all the upper surfaces of the Antares aren't photovoltaic. Wouldn't do much for the current (sorry) launch, but during the flight could recharge

Re: [Aus-soaring] Electric tugs (was applying skills to another activity)

2009-10-30 Thread emilis prelgauskas
On 30/10/2009, at 10:31 PM, Todd Sandercock wrote: Does anyone have any figures on the fuel consumption of a winch?? 1 litre / launch incl. all return drive and associated running around ___ Aus-soaring mailing list

Re: [Aus-soaring] Electric tugs (was applying skills to another activity)

2009-10-30 Thread David and Justine Olsen
much^4 On 31 Oct 2009, at 06:39, emilis prelgauskas wrote: On 30/10/2009, at 10:31 PM, Todd Sandercock wrote: Does anyone have any figures on the fuel consumption of a winch?? 1 litre / launch incl. all return drive and associated running around

Re: [Aus-soaring] Electric tugs (was applying skills to another activity)

2009-10-30 Thread Pam Kurstjens
All you need to know: http://www.skylaunchuk.com/ Their winch with retrieve cable can easily launch 30 gliders an hour from a single drum From: aus-soaring-boun...@lists.internode.on.net [mailto:aus-soaring-boun...@lists.internode.on.net] On Behalf Of David and Justine Olsen Sent:

Re: [Aus-soaring] Electric tugs (was applying skills to another activity)

2009-10-30 Thread Catherine Conway
I was very impressed by this and had the opportunity to drive the retrieve winch in September -Cath On 31/10/2009, at 8:49 AM, Pam Kurstjens wrote: All you need to know: http://www.skylaunchuk.com/ Their winch with retrieve cable can easily launch 30 gliders an hour from a single drum

Re: [Aus-soaring] re- Not gliding but flying none the less (Todd Sandercock)

2009-10-30 Thread Paul Bart
2009/10/30 Mark Newton new...@atdot.dotat.org On 30/10/2009, at 12:10, Paul Bart pb2...@gmail.com wrote:. So the fact that may be someone sitting around a campfire planning how to unleash a horrible death on anyone on the other side of the globe does not scare you to death? You gotta