Future of aviation, or flash in the pan??

On 2/1/20 9:25 AM, wrote:
On Saturday, February 1, 2020 at 10:23:42 AM UTC-5, Martin Gregorie wrote:
On Sat, 01 Feb 2020 05:25:44 -0800, unclhank wrote:

On Friday, January 31, 2020 at 7:27:53 PM UTC-5, Eric Greenwell wrote:
Dave Nadler wrote on 1/31/2020 12:15 PM:
On Tuesday, January 28, 2020 at 9:59:56 AM UTC-5,
wrote:
How hard could it be?

Here's an update from another skilled practitioner:
http://www.streifly.de/news-e.htm

Any idea what the "electromagnetic disturbances" are disturbing?

Some controllers use Hall sensors for position sensing and phase
control.
Others sense back EMF generated by the motor to do the controlling. If
those signals aren't "clean", not so good stuff happens.
That is the "simple" explanation.
UH

Indeed, two problems: the above and what seems to have been an
overheating problem with the original controller.

A later post explains that they are switching to a better, heavier duty
controller, but it is physically bigger and/or needs a different mounting
system, so they have to redesign the system almost from scratch to fit
everything into the fuselage. Watch this space...


--
Martin | martin at
Gregorie | gregorie dot org

I have gone through the same thing, abandoning one controller for another and then doing all the integration again.
You can't buy experience, but you DO pay for it.
UH


The folks on the Islander conversion project say they're doing
everything with off-the-shelf components. Can't you just run down to
Grainger and pick up something suitable? Heck there may still be one in
an attic in Connecticut you could use.

kinsell wrote on 2/1/2020 8:43 AM:
On 2/1/20 9:25 AM, wrote:
...
system, so they have to redesign the system almost from scratch to fit
everything into the fuselage. Watch this space...


--
Martin*** | martin at
Gregorie* | gregorie dot org

I have gone through the same thing, abandoning one controller for another and
then doing all the integration again.
You can't buy experience, but you DO pay for it.
UH


The folks on the Islander conversion project say they're doing everything with
off-the-shelf components.* Can't you just run down to Grainger and pick up
something suitable?* Heck there may still be one in an attic in Connecticut you
could use.

Adding self-launching to a single-seat sailplane (especially the small, light
Libelle!) that was not designed for it is going to be a significant project,
whether you are using electric, jet, or ICE. Changing propulsion systems is likely
easier, which is the case in the Islander.

--
Eric Greenwell - Washington State, USA (change ".netto" to ".us" to email me)
- "A Guide to Self-Launching Sailplane Operation"
https://sites.google.com/site/motorg...ad-the-guide-1

On Saturday, February 1, 2020 at 11:59:46 AM UTC-5, Eric Greenwell wrote:
kinsell wrote on 2/1/2020 8:43 AM:
On 2/1/20 9:25 AM, wrote:
...
system, so they have to redesign the system almost from scratch to fit
everything into the fuselage. Watch this space...


--
MartinÂ*Â*Â* | martin at
GregorieÂ* | gregorie dot org

I have gone through the same thing, abandoning one controller for another and
then doing all the integration again.
You can't buy experience, but you DO pay for it.
UH


The folks on the Islander conversion project say they're doing everything with
off-the-shelf components.Â* Can't you just run down to Grainger and pick up
something suitable?Â* Heck there may still be one in an attic in Connecticut you
could use.

Adding self-launching to a single-seat sailplane (especially the small, light
Libelle!) that was not designed for it is going to be a significant project,
whether you are using electric, jet, or ICE. Changing propulsion systems is likely
easier, which is the case in the Islander.

--
Eric Greenwell - Washington State, USA (change ".netto" to ".us" to email me)
- "A Guide to Self-Launching Sailplane Operation"
https://sites.google.com/site/motorg...ad-the-guide-1

They are all significant projects because of the lack of developed, compatible, proven, and documented components.
A few years from now that will be a much smaller issue.
UH

Having done some industrial D.C. Drives before.....getting bits is "sorta easy", controlling it (back feed from a windmilling prop) can be another.
Then add in low volumne for our use, whole new rats nest.
Even a "done deal" can be an issue as UncklHank has found on the -24E project. In his case, European time difference, lack of English as a prime language, shipping time back and forth, etc., etc.,.......figure it out.
Electrifying a US sailplane from gas is a project....period.....

On 2/1/20 10:12 AM, wrote:
On Saturday, February 1, 2020 at 11:59:46 AM UTC-5, Eric Greenwell wrote:
kinsell wrote on 2/1/2020 8:43 AM:
On 2/1/20 9:25 AM, wrote:
...
system, so they have to redesign the system almost from scratch to fit
everything into the fuselage. Watch this space...


--
MartinÂ*Â*Â* | martin at
GregorieÂ* | gregorie dot org

I have gone through the same thing, abandoning one controller for another and
then doing all the integration again.
You can't buy experience, but you DO pay for it.
UH


The folks on the Islander conversion project say they're doing everything with
off-the-shelf components.Â* Can't you just run down to Grainger and pick up
something suitable?Â* Heck there may still be one in an attic in Connecticut you
could use.

Adding self-launching to a single-seat sailplane (especially the small, light
Libelle!) that was not designed for it is going to be a significant project,
whether you are using electric, jet, or ICE. Changing propulsion systems is likely
easier, which is the case in the Islander.

--
Eric Greenwell - Washington State, USA (change ".netto" to ".us" to email me)
- "A Guide to Self-Launching Sailplane Operation"
https://sites.google.com/site/motorg...ad-the-guide-1

They are all significant projects because of the lack of developed, compatible, proven, and documented components.
A few years from now that will be a much smaller issue.
UH


Yep. Salvation is always just a couple years away. Now we have a
battery-powered 737 killer on the horizon. Undoubtedly using
off-the-shelf components.

http://sustainableskies.org/wright-e...als-big-plans/

Maybe they should get the puddle-jumpers working first before biting off
projects like this.

I saw a picture the other day of an electric super charger connected to
a diesel generator.Â* It was probably a gag, but who knows?Â* These
electronazis never seem to say just where the electricity comes from.

On 2/4/2020 7:09 AM, kinsell wrote:
On 2/1/20 10:12 AM, wrote:
On Saturday, February 1, 2020 at 11:59:46 AM UTC-5, Eric Greenwell
wrote:
kinsell wrote on 2/1/2020 8:43 AM:
On 2/1/20 9:25 AM, wrote:
...
system, so they have to redesign the system almost from scratch
to fit
everything into the fuselage. Watch this space...


--
MartinÂ*Â*Â* | martin at
GregorieÂ* | gregorie dot org

I have gone through the same thing, abandoning one controller for
another and
then doing all the integration again.
You can't buy experience, but you DO pay for it.
UH


The folks on the Islander conversion project say they're doing
everything with
off-the-shelf components.Â* Can't you just run down to Grainger and
pick up
something suitable?Â* Heck there may still be one in an attic in
Connecticut you
could use.

Adding self-launching to a single-seat sailplane (especially the
small, light
Libelle!) that was not designed for it is going to be a significant
project,
whether you are using electric, jet, or ICE. Changing propulsion
systems is likely
easier, which is the case in the Islander.

--
Eric Greenwell - Washington State, USA (change ".netto" to ".us" to
email me)
- "A Guide to Self-Launching Sailplane Operation"
https://sites.google.com/site/motorg...ad-the-guide-1

They are all significant projects because of the lack of developed,
compatible, proven, and documented components.
A few years from now that will be a much smaller issue.
UH


Yep.Â* Salvation is always just a couple years away.Â* Now we have a
battery-powered 737 killer on the horizon.Â* Undoubtedly using
off-the-shelf components.

Â*Â* http://sustainableskies.org/wright-e...als-big-plans/

Maybe they should get the puddle-jumpers working first before biting
off projects like this.




--
Dan, 5J

Dan Marotta wrote on 2/4/2020 9:38 AM:
I saw a picture the other day of an electric super charger connected to a diesel
generator.* It was probably a gag, but who knows?* These electronazis never seem
to say just where the electricity comes from.

That picture might be from Australia, where the roads in the outback are long, the
small towns along them are very isolated, and their electricity comes from diesel
generators. The diesel powered charging stations are very efficient, and electric
cars using them use no more fuel than a comparable gas car or diesel car. Of
course, the initial 100-300 miles of the trip is from the car's battery (charged
from the grid), so the overall trip might use very little diesel.

--
Eric Greenwell - Washington State, USA (change ".netto" to ".us" to email me)
- "A Guide to Self-Launching Sailplane Operation"
https://sites.google.com/site/motorg...ad-the-guide-1

But where did the diesel fuel for the charging station come from and how
was it delivered?Â* My point for not being very supportive of electric
vehicles is the lack of acknowledgement of all the fossil fuels that
went into the mining, manufacturing, disposal, electrical generation,
etc., spent on these vehicles.Â* I think they're technologically terrific
but the complete story is never told.Â* Some day, just not today...

A friend sent me a link from Europe stating that charging station prices
would increase by 500% starting this past January 31.Â* Can anyone from
Europe chime in and say if that was real or fake?

On 2/4/2020 11:01 AM, Eric Greenwell wrote:
Dan Marotta wrote on 2/4/2020 9:38 AM:
I saw a picture the other day of an electric super charger connected
to a diesel generator.Â* It was probably a gag, but who knows?Â* These
electronazis never seem to say just where the electricity comes from.

That picture might be from Australia, where the roads in the outback
are long, the small towns along them are very isolated, and their
electricity comes from diesel generators. The diesel powered charging
stations are very efficient, and electric cars using them use no more
fuel than a comparable gas car or diesel car. Of course, the initial
100-300 miles of the trip is from the car's battery (charged from the
grid), so the overall trip might use very little diesel.


--
Dan, 5J