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?
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
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
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
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
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
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
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
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
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
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
All,
Is this thing a glider or sailplane or something that might leave the
ground fly? or what has it to do with soaring.
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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
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
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
At 18:07 30/10/2009, Morgan wrote:
Yes, but an electric tug doesnât have to carry
the equivalent of 100L of avgas like a
âconventionalâ electric aircraft would for
cross-country flying. If you allowed
regenerative battery charging, the tug could
completely exhaust its battery getting
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:
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
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
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
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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
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:
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
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
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