Electronic total energy vario

Hi Gang
The electronic TE vario should be possible to implement with modern
electronics today. I have googled this item but have not been able to
find one. Maybe it doesn't exist for whatever reasons. It would sure
simplify some of the complex TE probe systems that stick out of the
empennages of many gliders. Any ideas or thoughts?
Dave

On Jul 18, 6:01*pm, kd6veb wrote:
Hi Gang
*The electronic TE vario should be possible to implement with modern
electronics today. I have googled this item but have not been able to
find one. Maybe it doesn't exist for whatever reasons. It would sure
simplify some of the complex TE probe systems that stick out of the
empennages of many gliders. Any ideas or thoughts?
Dave

Try the Cambridge 302, Westerboer VW911, LX4000, to name a few.
Electronic TE has been around for a long time.

Kirk
66

On 7/18/2011 7:01 PM, kd6veb wrote:
Hi Gang
The electronic TE vario should be possible to implement with modern
electronics today. I have googled this item but have not been able to
find one. Maybe it doesn't exist for whatever reasons. It would sure
simplify some of the complex TE probe systems that stick out of the
empennages of many gliders. Any ideas or thoughts?
Dave


The Cambridge 302 (and I'm sure many others) will do that. see the
manual http://www.cambridge-aero.com/manuals/302_v2.pdf , section 2.2.4.

Tony

There are many choices for electronic TE varios. Most are just about
any of the common flight computer vario systems. I fly with a
Cambridge 302 that is configured for electronic compensation. I have
only my mechanical vario on the TE probe. That way I have two
independent systems. The Cambridge 302 with electronic compensation
works very well for me.
Guy "DDS"

On Jul 18, 5:01*pm, kd6veb wrote:
Hi Gang
*The electronic TE vario should be possible to implement with modern
electronics today. I have googled this item but have not been able to
find one. Maybe it doesn't exist for whatever reasons. It would sure
simplify some of the complex TE probe systems that stick out of the
empennages of many gliders. Any ideas or thoughts?
Dave

I don't think Dave is asking about the 302 since it uses a TE probe.
What I think he's asking about is doing the TE calculation in real-
time in silicon using just the airspeed and altitude data from pitot
and static ports. AFAIK, no variometer has ever taken this approach.

I've wondered about this too since it would do away with almost all
the special variometer plumbing as well as the probe. It would also
eliminate a lot of pneumatic artifacts.

Bill Daniels

On Jul 18, 7:35*pm, Bill D wrote:
On Jul 18, 5:01*pm, kd6veb wrote:

Hi Gang
*The electronic TE vario should be possible to implement with modern
electronics today. I have googled this item but have not been able to
find one. Maybe it doesn't exist for whatever reasons. It would sure
simplify some of the complex TE probe systems that stick out of the
empennages of many gliders. Any ideas or thoughts?
Dave

I don't think Dave is asking about the 302 since it uses a TE probe.
What I think he's asking about is doing the TE calculation in real-
time in silicon using just the airspeed and altitude data from pitot
and static ports. *AFAIK, no variometer has ever taken this approach.

I've wondered about this too since it would do away with almost all
the special variometer plumbing as well as the probe. *It would also
eliminate a lot of pneumatic artifacts.

Bill Daniels

The 302 does not require a TE probe. You can connect the static port
to both the static and TE connections on the 302 and use pure
electronic TE compensation. The 302 was designed to do this very thing
as specified in the documentation.

On Jul 18, 5:01*pm, kd6veb wrote:
Hi Gang
*The electronic TE vario should be possible to implement with modern
electronics today. I have googled this item but have not been able to
find one. Maybe it doesn't exist for whatever reasons. It would sure
simplify some of the complex TE probe systems that stick out of the
empennages of many gliders. Any ideas or thoughts?
Dave

Hi Dave,

The Westerboer 1020 is the latest full featured electronic total
energy vario from Westerboer- Great vario.

Mike

Hi Mike
The Westerboer 1020 vario is just what I may be looking for. Does
anyone have one of these and how good is it in a real glider with some
inaccuracies in the pitot and static systems? I have had a Stemme S10-
VT for 11 years (I just sold it) and the TE probe compensation was
much better than no compensation but still fairly poor. One could
easily demonstrate the stick thermal effect. Obviously the better the
TE compensation the easier it is to soar but my experience of the last
years is that 50% comp is OK but better than 70% comp is a winner.
Again your thoughts and experiences? Thanks.
Dave


On Jul 18, 5:31*pm, Mike wrote:
On Jul 18, 5:01*pm, kd6veb wrote:

Hi Gang
*The electronic TE vario should be possible to implement with modern
electronics today. I have googled this item but have not been able to
find one. Maybe it doesn't exist for whatever reasons. It would sure
simplify some of the complex TE probe systems that stick out of the
empennages of many gliders. Any ideas or thoughts?
Dave

Hi Dave,

The Westerboer 1020 is the latest full featured electronic total
energy vario from Westerboer- Great vario.

Mike

On Jul 18, 9:56*pm, kd6veb wrote:
Hi Mike
* The Westerboer 1020 vario is just what I may be looking for. Does
anyone have one of these and how good is it in a real glider with some
inaccuracies in the pitot and static systems? I have had a Stemme S10-
VT for 11 years (I just sold it) and the TE probe compensation was
much better than no compensation but still fairly poor. One could
easily demonstrate the stick thermal effect. Obviously the better the
TE compensation the easier it is to soar but my experience of the last
years is that 50% comp is OK but better than 70% comp is a winner.
Again your thoughts and experiences? Thanks.
Dave

On Jul 18, 5:31*pm, Mike wrote:



On Jul 18, 5:01*pm, kd6veb wrote:

Hi Gang
*The electronic TE vario should be possible to implement with modern
electronics today. I have googled this item but have not been able to
find one. Maybe it doesn't exist for whatever reasons. It would sure
simplify some of the complex TE probe systems that stick out of the
empennages of many gliders. Any ideas or thoughts?
Dave

Hi Dave,

The Westerboer 1020 is the latest full featured electronic total
energy vario from Westerboer- Great vario.

Mike- Hide quoted text -

- Show quoted text -

As mentioned earlier Dave, I have used the same 1020 in two sailplanes-
no problems in either. Tim, at Wings and Wheels, has info and a copy
of the owner manual on his site.

Mike

On Jul 18, 11:56*pm, kd6veb wrote:

* The Westerboer 1020 vario is just what I may be looking for. Does

As has been pointed out, many varios support electronic TE. Some
interesting info is in the LX166 manual (a vario from LX Navigation):

http://www.craggyaero.com/User%20Gui...ishVer0110.pdf

p.11/12 deal with TE; they say that for electronic TE to work well,
the static source must be close to the pitot.

Borgelt varios seem to only do pneumatic TE.