Micro-wind energy

[Stephen Michalik[_2_]]

Saw this on the OZ report... seem applicable to gliders!

http://www.designfax.net/cms/dfx/opens/article-view-dfx.php?nid=4&bid=315&et=featurearticle&pn=03

I could see a pilot throw a line out with 50 of these on/inside a flying tube that recharges a battery in 10 or 15 minutes. Reel the line back in and store for the next recharge. Especially when flying wave eh?

S9

[Andrew Brayer]

On Monday, February 3, 2014 8:42:26 AM UTC-5, Stephen Michalik wrote:
> Saw this on the OZ report... seem applicable to gliders!
>
>
>
> http://www.designfax.net/cms/dfx/opens/article-view-dfx.php?nid=4&bid=315&et=featurearticle&pn=03
>
>
>
> I could see a pilot throw a line out with 50 of these on/inside a flying tube that recharges a battery in 10 or 15 minutes. Reel the line back in and store for the next recharge. Especially when flying wave eh?
>
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> S9

i wonder how much speed they could handle, i don't think i saw that when i scanned the article.

[Wojciech Scigala]

Użytkownik Stephen Michalik napisał:

> I could see a pilot throw a line out with 50 of these on/inside a
> flying tube that recharges a battery in 10 or 15 minutes. Reel the
> line back in and store for the next recharge. Especially when flying
> wave eh?
You can't cheat the physics. This is generating electricity by
increasing drag. If required, it can be done much simpler with a
generator in vent tube.

--
Wojtuś

[[email protected]]

On Monday, February 3, 2014 5:42:26 AM UTC-8, Stephen Michalik wrote:
> Saw this on the OZ report... seem applicable to gliders!
>
>
>
> http://www.designfax.net/cms/dfx/opens/article-view-dfx.php?nid=4&bid=315&et=featurearticle&pn=03
>
>
>
> I could see a pilot throw a line out with 50 of these on/inside a flying tube that recharges a battery in 10 or 15 minutes. Reel the line back in and store for the next recharge. Especially when flying wave eh?
>
>
>
> S9

[[email protected]]

On Monday, February 3, 2014 5:42:26 AM UTC-8, Stephen Michalik wrote:
> Saw this on the OZ report... seem applicable to gliders!
>
>
>
> http://www.designfax.net/cms/dfx/opens/article-view-dfx.php?nid=4&bid=315&et=featurearticle&pn=03
>
>
>
> I could see a pilot throw a line out with 50 of these on/inside a flying tube that recharges a battery in 10 or 15 minutes. Reel the line back in and store for the next recharge. Especially when flying wave eh?
>
>
>
> S9

[[email protected]]

On Monday, February 3, 2014 5:42:26 AM UTC-8, Stephen Michalik wrote:
> Saw this on the OZ report... seem applicable to gliders!
>
>
>
> http://www.designfax.net/cms/dfx/opens/article-view-dfx.php?nid=4&bid=315&et=featurearticle&pn=03
>
>
>
> I could see a pilot throw a line out with 50 of these on/inside a flying tube that recharges a battery in 10 or 15 minutes. Reel the line back in and store for the next recharge. Especially when flying wave eh?
>
>
>
> S9
I have a thought, I'm speaking from an airline pilot point of view and low-time glider pilot with only a smidgen amount of aerodynamic knowledge. But why not take the ADG (air deployed generator) that they use on some Jets, like the DC-10 etc and make something you can deploy with a handle (like for example a sustainer engine type thing but much smaller of course) which could be raised (or lowered ) into the slipstream to charge batteries when altitude or speed is not an issue - lots of excess altitude and airspeed, popping thermals but dead or soon to die batteries. Somebody could design something light-weight with an easily installed mechanism (on the belly or top aft of the canopy) that can be retracted with sealed doors.

[Craig Funston[_2_]]

On Friday, February 7, 2014 4:42:47 PM UTC-8, wrote:
> On Monday, February 3, 2014 5:42:26 AM UTC-8, Stephen Michalik wrote:
>
> > Saw this on the OZ report... seem applicable to gliders!
>
> >
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> >
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> > http://www.designfax.net/cms/dfx/opens/article-view-dfx.php?nid=4&bid=315&et=featurearticle&pn=03
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> >
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> >
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> >
>
> > I could see a pilot throw a line out with 50 of these on/inside a flying tube that recharges a battery in 10 or 15 minutes. Reel the line back in and store for the next recharge. Especially when flying wave eh?
>
> >
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> >
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> > S9
>
> I have a thought, I'm speaking from an airline pilot point of view and low-time glider pilot with only a smidgen amount of aerodynamic knowledge. But why not take the ADG (air deployed generator) that they use on some Jets, like the DC-10 etc and make something you can deploy with a handle (like for example a sustainer engine type thing but much smaller of course) which could be raised (or lowered ) into the slipstream to charge batteries when altitude or speed is not an issue - lots of excess altitude and airspeed, popping thermals but dead or soon to die batteries. Somebody could design something light-weight with an easily installed mechanism (on the belly or top aft of the canopy) that can be retracted with sealed doors.

Here's an article on a similar concept
http://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=2&ved=0CDQQFjAB&url=http%3A%2F%2Fesoaring.com%2Fbarnes_regen_soari ng_theory.pdf&ei=dIP1UuibMZThoATqw4G4Dg&usg=AFQjCNH5b1tbURKlRaW64vewsSB0N-nu7Q&sig2=5yMiZm863v_U0X2z9Kv2PQ&bvm=bv.60983673,d.cGU

Craig
7Q

[Dan Marotta]

Of course it could be done, but replacing old batteries and/or adding
another battery would be a lot simpler and a whole lot cheaper.


> wrote in message
...
On Monday, February 3, 2014 5:42:26 AM UTC-8, Stephen Michalik wrote:
> Saw this on the OZ report... seem applicable to gliders!
>
>
>
> http://www.designfax.net/cms/dfx/opens/article-view-dfx.php?nid=4&bid=315&et=featurearticle&pn=03
>
>
>
> I could see a pilot throw a line out with 50 of these on/inside a flying
> tube that recharges a battery in 10 or 15 minutes. Reel the line back in
> and store for the next recharge. Especially when flying wave eh?
>
>
>
> S9
I have a thought, I'm speaking from an airline pilot point of view and
low-time glider pilot with only a smidgen amount of aerodynamic knowledge.
But why not take the ADG (air deployed generator) that they use on some
Jets, like the DC-10 etc and make something you can deploy with a handle
(like for example a sustainer engine type thing but much smaller of course)
which could be raised (or lowered ) into the slipstream to charge batteries
when altitude or speed is not an issue - lots of excess altitude and
airspeed, popping thermals but dead or soon to die batteries. Somebody
could design something light-weight with an easily installed mechanism (on
the belly or top aft of the canopy) that can be retracted with sealed doors.

[Dave Springford]

You mean like one of these?

http://store.peakbattery.com/12lfpba.html


and in a completely commercial announcement, I am taking orders for K2 batteries for delivery at the Seniors, Perry and Cordele if anyone is interested in purchasing some of these LiFePo4 batteries and/or chargers.

The K2B12V10EB is a 10 Ah equivalent with built-in battery management system.

Batteries are $150 each and the chargers are $30 each.

email me directly at dave "at" foxonecorp "dot" com with the number of batteries and chargers you wold like.

Dave Springford
www.foxonecorp.com

[Tony V]

On 2/7/2014 8:09 PM, Dan Marotta wrote:
> Of course it could be done, but replacing old batteries and/or adding
> another battery would be a lot simpler and a whole lot cheaper.


And, wouldn't add drag, like the other methods described.

Tony "6N"

[JS]

Seems a bad idea to me.
As Dan suggested, there is no need for all this with good batteries.
A couple of Tenergy or K2 12V 10A/H LiFePO4 would be the best solution. You can do 1000k with a VGA moving map display and transponder (plus the usual assortment of crap) running from pre-flight to flight download. The batteries will still be above 12V afterwards.
Besides the aerodynamic drag and storage problems, what time and money are involved to replace the canopy after a bad deployment or retrieval of one of those generators? It will happen sooner or later.
With that consideration, even phosphate batteries are cheap.
Jim

[Dan Marotta]

My concern with the LiFeP04 batteries concerns my hangar arrangement. Two
of my three batteries require tools or removal of the tail to get them out
of the glider so my glider stays connected to "smart" chargers continuously.
At present, I'm not comfortable with leaving a lithium battery connected all
the time. Is it safe as with the AGM batteries?


"JS" > wrote in message
...
Seems a bad idea to me.
As Dan suggested, there is no need for all this with good batteries.
A couple of Tenergy or K2 12V 10A/H LiFePO4 would be the best solution. You
can do 1000k with a VGA moving map display and transponder (plus the usual
assortment of crap) running from pre-flight to flight download. The
batteries will still be above 12V afterwards.
Besides the aerodynamic drag and storage problems, what time and money are
involved to replace the canopy after a bad deployment or retrieval of one of
those generators? It will happen sooner or later.
With that consideration, even phosphate batteries are cheap.
Jim

[Dave Springford]

Well ... it is not safe to leave any battery on continuous charge inside the glider. All it takes is for the charging circuit in the smart charger to fail and pump too much into the battery and then boom!

However, as long as one believes in the charger, then yes, it is safe to leave the LiFePo4 batteries on their smart charger. The K2 batteries have a Battery Management System (BMS) built into the battery case, so this also helps to regulate the charge.

With both the smart charger and the BMS looking out for the battery it should be safer than the single redundancy of the lead-acid charger.

Another option is to buy a $10 plug-in timer and run the charger through the timer and set it to charge for a limited time period each day. We do this with our tow plane batteries through out the winter to keep them topped-up while the runway is under feet of snow.