LXNAV HAWK Zoom Webinar - Saturday, Feb. 5, 2022

[Pau Remde]

LXNAV HAWK - Zoom Webinar - Free

Presenter - Heinrich Meyr (One of the creators of HAWK)

Hosted by Paul Remde

Saturday, February 5, 10 am U.S. Central Time (1 hour)

Presentation Overview

HAWK: Vario and wind measurement in real time

Knowledge of the 3- dimensional airmass movement is the alpha and omega of glider flying. A necessary requirement for optimal flying is an instrumentation which yields reliable information of the vertical climb rate as well as the horizontal wind in real time. By reliable we understand that the false alarm probability that the instrument indicates a thermal - if there is no thermal - is negligible. And, that the probability to detect a thermal - if there is a thermal - is high. State of the art instrumentation do not meet these requirements today. TEK varios respond to horizontal gusts by producing false climb rates. The horizontal wind is equally important, e. g. in mountain flying. Today’s estimated wind algorithm’s deliver only mean values with average times in the range of minutes.

We argue in this presentation that HAWK fulfills the above defined requirements. It jointly estimates all three components of the airmass movement in real time. It processes signals from a 3-D acceleration sensor, a 3-D gyro sensor, a static and a dynamic pressure sensor, and GPS. These signals are processed in an advanced novel algorithm based on a nonlinear Kalman filter. The innovative contribution in the algorithm design of HAWK is that it does neither employ a magnetic sensor nor a differential GPS: Only the sensors built in the LXNav equipment are used.

HAWK has undergone an extensive test program with several test pilots and with different gliders. The data of these test flights have been recorded and will be presented in the main part of this talk.

About Heinrich Meyr

Heinrich is a Swiss glider pilot with over 3000 hours on my ASH 25M. He has been flying in many places all over the world: Europe, South Africa (Gariep), New Zealand, Minden (Nevada). He is a professor emeritus of electrical engineering at the RWTH Aachen, Germany ,and a Life Fellow IEEE. He has been a frequent visiting professor at UC Berkley. Besides his academic career he has cofounded a number of highly successful startups.

Meeting Limit: 100 guests

Note: The meeting will be recorded and made available for later viewing.

Toni Šibanc from LXNAV will make a brief presentation about the LXNAV implementation and price of HAWK.

Link to Join Zoom Meeting

https://us02web.zoom.us/j/81143307521?pwd=eU54RHc5cUY4RG1abGhxcnA2bVpuZz09

Meeting ID: 811 4330 7521

Passcode: 7000

This is certain to be a fascinating presentation. I hope you can join us.

Paul Remde

Cumulus Soaring, Inc.

[Pau Remde]

Hi,

One additional note:
It is not necessary or possible to pre-register.  Guests will be admitted until the meeting is full.  
Note: The meeting will be recorded and made available for later viewing on my Patreon site.  It will be available for all to view.

Best Regards,

Paul Remde
Cumulus Soaring, Inc.

[jpg...@gmail.com]

Paul, at what time will the room be open for registration?

John Galloway

[Pau Remde]

Hi John,

I plan to open the meeting room 15 minutes before the meeting starts - after verifying that the connections are working with the presenters.  It may open earlier than that.  I doubt we will have more than 100 attendees.  If the meeting fills-up, it is not a problem because the meeting will be recorded and made available for everyone to watch at any time.

Best Regards,

Paul Remde

Cumulus Soaring, Inc.

[Eric Greenwell]

Zoom is one of the few good things about the pandemic. I've attended several soaring (and other types) events meetings that I could not have attended because they were hundreds or thousands of miles from me, and recording the event is effortless, allowing it to be seen by others later or reviewed by the attendees.

Thanks again for doing this, Paul, especially since the convention is postponed.

Eric

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[Walter Rogers]

After flying with he HAWK firmware during the 2021 soaring season (S100 Discus 2a), I'm impressed with the quality and rapid updating of winds. One of the text screens allowed me to see both the 30sec average and the rapidly updated values at the same time. Performance and accuracy seemed to be pretty good. While flying in my familiar Southern Sierra and Tehachapi, California areas... I could  easily confirm the shear lines and wind shifts already known. For example, while descending into the Tehachapi Valley, winds shifted from SE 13kts to WNW 12 kts around 2500agl identifying the typical stable airmass that flows through the valley in the late afternoon. It's not uncommon to have a shear line down the center of the Tehachapi Valley. HAWK winds realistically identified this. Regarding the 3D winds and inertial vario... my impression was that the the inertial vario was faster to identify the "solid" thermals and filter out gusts. For non mountainous or "flat land" soaring, I'm not sure the $1200 USD upgrade may be worth it. But, for enthusiasts, mountain flyers and racer, it's a valuable addition

Adoption of the relatively expensive HAWK algorithm needs more that just anecdotal and technical testing descriptions so I'm  looking forward to the webinar by Paul Remde with Heinrich Meyr. I recently sent an email to LXNAV asking this  question. "How did you capture HAWK winds for your own analysis? Why not add a feature that helps HAWK customer verify the winds for later analysis. I'm a supporter of HAWK after just one season of flying it. You really need to add a feature that allows us to export the HAWK wind data into the igc file... or even another file exportable on the S100/LX90XX. "

Uros answered with this on January 28, 2022: "I have checked and we have on the todo list that wind information will be available in the IGC file.

Probably with the next release it will be implemented."

Great news!!  I'm looking forward to your HAWK webinar, Paul

Walt Rogers WX

[Pau Remde]

Hi Everyone,

I'm looking forward to the HAWK Zoom webinar next Saturday (Feb. 5, 2022).  I have upgraded my Zoom account to allow for up to 1000 guests.  I hope you can join us.

Best Regards,

Paul Remde
Cumulus Soaring, Inc.

[Pau Remde]

Hi Soaring Friends,

Just a quick reminder that the HAWK Zoom meeting will be tomorrow, Saturday, February 5, 2022 at 10 AM U.S. Central Time (16 UTC).  I have upgraded my Zoom account to allow up to 1000 guests.  The meeting will be recorded and made available to view any time on my Patreon site at: https://www.patreon.com/cumulussoaring.  It should be available within 24 hours after the meeting.  I hope you can join the fun.  It promises to be a very interesting presentation and discussion.  

There is no need to pre-register - just join the meeting before or during the event.

Join Zoom Meeting
https://us02web.zoom.us/j/81143307521?pwd=eU54RHc5cUY4RG1abGhxcnA2bVpuZz09
Meeting ID: 811 4330 7521
Passcode: 7000

Best Regards,

Paul Remde
Cumulus Soaring, Inc.

[Eric Greenwell]

Thanks, Paul, I'll be there. I'm glad you put in UTC, because I'm better with that than time zones 😅

Eric

On 2/4/2022 5:23 AM, Pau Remde wrote:

Hi Soaring Friends,

Just a quick reminder that the HAWK Zoom meeting will be tomorrow, Saturday, February 5, 2022 at 10 AM U.S. Central Time (16 UTC).  I have upgraded my Zoom account to allow up to 1000 guests.  The meeting will be recorded and made available to view any time on my Patreon site at: https://www.patreon.com/cumulussoaring.  It should be available within 24 hours after the meeting.  I hope you can join the fun.  It promises to be a very interesting presentation and discussion.  

There is no need to pre-register - just join the meeting before or during the event.

Join Zoom Meeting
https://us02web.zoom.us/j/81143307521?pwd=eU54RHc5cUY4RG1abGhxcnA2bVpuZz09
Meeting ID: 811 4330 7521
Passcode: 7000

Best Regards,

Paul Remde

Cumulus Soaring, Inc..

[Pau Remde]

Hi Soaring Friends,

The HAWK webinar went well today with nearly 100 guests.  The presentations were interesting and the discussion excellent.  

The full video of the webinar is now available on my Patreon site - free for anyone to view:
https://www.patreon.com/posts/lxnav-hawk-62173884

Thank you to Toni and Heinrich and all participants!

Paul Remde
Cumulus Soaring, Inc.

[danrihn]

There were some comments regarding Hawk and Self Launchers;  At about 1:35:20 it sounds like Heinrich is planning an update or modification to the Hawk S/W during engine runs.  Or is he suggesting to manually activate Hawk after engine shutdown?

Can Paul or Toni provide any clarification to this issue?

Thank you

Dan Rihn

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[Pau Remde]

Hi Dan,

I don't think there is a clear answer available at this time.  Heinrich did say that sometimes the HAWK may get confused in certain situations.  I think he was suggesting leaving the vario off until you get done running the motor for the self-launch, or rebooting it after the self-launch - but only if necessary.  I don't think he was saying that it is always a problem, just that it could potentially be a problem.  I'm not certain, but I think his ASH 25 is a self-launcher, so I imagine he'll continue testing and improvements over time.  

I'll send Heinrich an email to ask him what he recommends for self-launching sailplane using HAWK.

Best Regards, 

Paul Remde

Cumulus Soaring, Inc.

[Arne Martin Güettler]

Would be quite annoying if the entire LX9000 has to be restarted because
HAWK is acting up... Or is there a way to just restart HAWK? If not
there certainly should be.

> <https://groups.google.com/d/msgid/lxnav-user-group/a7f7351e-2cc8-4bf3-9b0b-66527284c7ccn%40googlegroups.com?utm_medium=email&utm_source=footer>.

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[F Hersen]

I think it's a good idea to fly with the engine running with a power equal
maximum L/D equal infinity.
So we may adapt the Hawk setting with a lot of configurations. I used this
for TEK with my ASH30, with good results.

RC


-----Message d'origine-----
From: Arne Martin Güettler
Sent: Sunday, February 6, 2022 7:57 PM
To: LXNav Soaring Glider Equipment User Discussion Group
Subject: Re: [LXNAV-user-group] Re: LXNAV HAWK Zoom Webinar - Saturday, Feb.
5, 2022

https://groups.google.com/d/msgid/lxnav-user-group/bfc30382-ea81-9e61-ea0d-fa6ce07bb686%40gmail.com.

[danri...@gmail.com]

Thank you Paul,

I really enyoyed the presentation, very interesting 

thank you so much for putting this together

Dan Rihn

[Ian Molesworth]

Having just dropped a wad of cash on the AHRS option for my system I don't see a way to repeating the exercise for a few seasons if at all given that there is no credit at all for the outlay. No doubt in future anyone in their right mind would take the Hawk option over AHRS as with the Hawk you get two systems for your money.

To view this discussion on the web visit https://groups.google.com/d/msgid/lxnav-user-group/840aa351-f475-4169-b232-a4e10ac3dd09n%40googlegroups.com.

[Pau Remde]

Hi,

I sent a note to Heinrich, (HAWK creator) and his reply is below.

Best Regards,

Paul Remde

___________________________

my ASH 25 M is a self launcher with a Wankel engine which runs smoother than other motors. I never had any problems taking off with HAWK enabled. In some cases pilots have reported problems which are due to overload of acceleration sensors. 

 In this case restarting HAWK  after engine shut down  is necessary. Hawk works  after less than  30 seconds.

in the future an algorithm will detect engine shut down and automatically restart HAWK. 

iI hope this answers your questions . 

best regards 

heinrich

[Pau Remde]

Hi Ian,

Toni indicated that anyone who purchased the AHRS option in the last year can request a discount on HAWK.  Send me an email with the serial number and date of purchase and I would be glad to ask LXNAV for a quote.

Best Regards,

Paul Remde

Cumulus Soaring, Inc.

[jpg...@gmail.com]

On Sunday, 6 February 2022 at 18:57:41 UTC pok...@gmail.com wrote:

Would be quite annoying if the entire LX9000 has to be restarted because
HAWK is acting up... Or is there a way to just restart HAWK? If not
there certainly should be.

Presumably HAWK can be re-started simply by unchecking then checking the "HAWK/Enabled" box on the Vario Parameters page(?)

[Bif Huss]

Hi Paul,

I’m very interested in Hawk, however, I too have a self launcher, V3M, and am primarily a contest pilot. I have two questions:

1. If Hawk needs to be restarted in flight, can it be restarted without restarting my LX 9070? 

2. While in cruise mode, I use the speed to fly graphic on the V8 vario. Will that still be available with Hawk running and displayed. Can I display Hawk winds on the 9070 instead?

Thanks,

Bif Huss “H7”

Sent from my iPhone

On Feb 6, 2022, at 13:00, jpg...@gmail.com <jpg...@gmail.com> wrote:



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[Pau Remde]

That is correct.  You can simply disable HAWK and re-enable it.  Heinrich confirmed that in an email today.

Best Regards,

Paul Remde

[Pau Remde]

Hi Bif,

Yes.  HAWK can be restarted by disabling and re-enabling it.

I haven't flown with HAWK yet, so I can't answer question 2.  I think cruise/climb push/pull icon is not visible on the HAWK wind arrow screen.  It is easy to cycle between main screens on the vario using the center button on the right.  I think it will be possible to display HAWK indicators on the main LX9070 - as you can display a variometer pointer on the LX9070 screen.  But I don't know if that has been implemented yet.  I suspect that currently it will require some screen switching using the center button on the vario.  

Perhaps someone who has flown with HAWK can better answer that question.  I think Walt Rogers uses an S10 or S100, not an LX90x0 and V8, but the functionality is very similar.

Best Regards,

Paul Remde

Cumulus Soaring, Inc.

[Walter Rogers]

BTW, Here's a quick (5:19) and excellent video overview of HAWK:

https://www.youtube.com/watch?v=4lIl5Sra5Jw

"Flighttest of the new LXNAV HAWK wind and variometer indicator" - Rudi's Gliding Adventures

Walt WX

[jpg...@gmail.com]

On Sunday, 6 February 2022 at 22:12:38 UTC Bif Huss wrote:

 

 "While in cruise mode, I use the speed to fly graphic on the V8 vario. Will that still be available with Hawk running and displayed. Can I display Hawk winds on the 9070 instead?"

Bif,  have a look at section 6.3.2 of the version 9 manual for the 8/9000 series.  You can get little arrows and numbers for the instantaneous and average winds surrounding the plane icon on the main flying screens.  These will be HAWK winds if it is activated.   I have added that function to my profile file thinking that I might only switch the V8 to the winds screen if a big display of winds feels critical at the time.

[Ramy Yanetz]

I think the Hawk upgrade is a great value especially for those who did not have the AHRS option before, which in my opinion can be a life saver. Too bad they only provide discount to those who recently purchased AHRS instead of everyone with AHRS. 

Also am curious if an older generation of LX9000 can be upgraded to Gen4 and what will be the cost. 

Ramy

https://groups.google.com/d/msgid/lxnav-user-group/de195ead-b9f4-42f9-b1d5-1d27a8c1b53fn%40googlegroups.com

.

[Carl CZ]

I understand that an upgrade would be cost prohibitive (over $3500?). Because of that, I've purchased a new unit to replace my gen 3 and will be putting my old one on the used market.

[the_gle...@msn.com]

A commercial question - for a 2 seater do you have to pay twice for the Hawk winds update or only once? 

[Pau Remde]

Hi,

HAWK is tied to a particular system.  If you have an LX90x0 with V8 vario in the front, and LX9000D with i8 display in the back, then you need to only buy HAWK once, for the front seat LX9000 system.

If you have 2 LX9000 systems, each with V8 varios, then you'd need to buy HAWK for each system - if you wanted to see it in both seats.

Best Regards,

Paul Remde

Cumulus Soaring, Inc.

________________