Themi

I'm looking for some info on THEMI: How do they work,
what's the technology used, etc. Can you help?

http://search.ninemsn.com.au/results...RM=AS5&q=THEMI

= http://www.eglider.org/themi.htm

"Mathilde Akar" wrote in message
...
I'm looking for some info on THEMI: How do they work,
what's the technology used, etc. Can you help?

Mathilde Akar wrote:
I'm looking for some info on THEMI: How do they work,
what's the technology used, etc. Can you help?

How about this:

http://patft.uspto.gov/netahtml/srchnum.htm
Look for patent number 6,089,506

In article , Mathilde Akar
writes

I'm looking for some info on THEMI: How do they work,
what's the technology used, etc. Can you help?

How about looking at the IGC-approval document for this recorder.
IGC-approval documents for all recorders are available through:

www.fai.org/gliding/gnss

--
Ian Strachan
Chairman IGC GFA Committee

Hi Mathilde,

The Themi manual explains it to a certain extent. It is available on my web
site he
http://www.cumulus-soaring.com/themi.htm

It uses GPS position and pressure altitude data to estimate where the center
of the thermal is. It then uses LED indicators near the top of the
instrument panel to guide you to the center. A friend of mine uses a Themi
in his DG-1000 and likes it.

Good Soaring,
Paul E. Remde
Cumulus Soaring, Inc.
http://www.cumulus-soaring.com
1-952-445-9033
3M Tape, Airpath Compasses, Birecki Software, Cambridge Aero Instruments,
Walter Dittel Radios, EMTAC GPS, Filser, flyWithCE, Garmin, Garrecht
Volkslogger, Glide Navigator II, Goddard, ICOM Radios, ILEC, Intercomp, LX
Navigation, Power-Sonic Batteries, RAM, Rikaline GPS, Scheffel Automation
Themi, Schumacher Chargers, Schweizer, SeeYou & SeeYou Mobile, StrePla &
pocket*StrePla, Tasman Varios, Transplant GPS, United Instruments
Altimeters, Vertex Standard Radios, Winter, Xenotronix Chargers

"Mathilde Akar" wrote in message
...
I'm looking for some info on THEMI: How do they work,
what's the technology used, etc. Can you help?

One of my concerns about some devices is the amount of attention needed from
the pilot. Head-down looking at an instrument time, must be kept to a
minimum for safety reasons.

Themi uses two bright, LED lights mounted near the top of the instrument
panel (typical) so they are in your field of view.
The light or lights, only come on if Themi has a suggestion to make, so the
light(s) are easy to notice without ever looking at them.

Themi is most valuable on blue days, or at low altitudes, when clouds are of
little help. Themi really works!

Detailed information can be found on our web site www.eglider.org.

Tom Knauff
Knauff & Grove Soaring Supplies

Themi uses two bright, LED lights mounted near the top of the instrument
panel (typical) so they are in your field of view.
The light or lights, only come on if Themi has a suggestion to make, so
the
light(s) are easy to notice without ever looking at them.


Better yet, they ought to develop a STEREO audio vario. Hear the tone in
your left ear, turn left, or turn right when you hear it in your right ear.
Even better would be quadra-pnonic... The tone would appear to eminate from
the center of the lift... left, right, front, or back, you would know where
the lift was without ever looking at he panel.

Guy Byars

Themi does exactly that with lights, while you listen to your audio vario
and watch outside for clues of lift and other aircraft.
Just for claification, Themi does not find thermals. It only directs you to
the center of the best lift it experiences after you have found one. At
least one champion of the USA's Nationals uses it.

Tom Knauff

"Guy Byars" wrote in message
...

Themi uses two bright, LED lights mounted near the top of the instrument
panel (typical) so they are in your field of view.
The light or lights, only come on if Themi has a suggestion to make, so
the
light(s) are easy to notice without ever looking at them.


Better yet, they ought to develop a STEREO audio vario. Hear the tone in
your left ear, turn left, or turn right when you hear it in your right
ear.
Even better would be quadra-pnonic... The tone would appear to eminate
from
the center of the lift... left, right, front, or back, you would know
where
the lift was without ever looking at he panel.

Guy Byars

Guy Byars wrote:
Better yet, they ought to develop a STEREO audio vario. Hear the
tone in
your left ear, turn left, or turn right when you hear it in your
right ear.
Even better would be quadra-pnonic... The tone would appear to
eminate from
the center of the lift... left, right, front, or back, you would know
where
the lift was without ever looking at he panel.

Guy Byars

Hey Guy, you must have attended one of my technology forecasts back in
the early 90s ;-) Anyway, what you really want is sonic holography
that gives you not only the direction but distance information.
Requires
a head-tracker and a bit of DSP, now cost-effective except that the
development costs are unlikely sustained by our teeney market...
Best Regards, Dave "YO"

Being forced to fly occasionally in blue conditions and often finding
myself low on course, I found this to be an intriguing concept
(ignoring the fact that it's yet another way to increase the cost of
competition). But I hadn't heard that any "name" pilots were using it
apart from Tom's tests.

Does anyone know of any experts who have given it the official stamp of
approval (i.e., by actually spending his/her own money to buy one)?
Chip Bearden
ASW 24 "JB"