Re: [Aus-soaring] Aus-soaring Digest, Vol 139, Issue 48
Hello Richard, hello all! For those of you who are proud owners of “Advanced Soaring Made Easy” it might pay you to have a closer look at pages 181 - 183 of the third edition. Kind regards to all! Bernard On 28 Apr 2015, at 5:01 am, Richard Frawley rjfraw...@gmail.com wrote: And there it is... Having now tried at least 8 different manufacturers modern (released in the last 5 years) varios, in terms of gust rejection I find they all work very well until they get hit with the strong, narrow, gusty summer thermals we get between trigger time and the late afternoon when things usually tend smooth out. To my observation, They all struggle to effectively differentiate strong horizontal components from the vertical components and for good reason when one takes the time to fully understand the physics and resolutions of systems involved. To date, I have seen a lot of claims with little or no scientific method to back them up and so far, little observable operational difference when it comes to this one aspect. Modern varios of course now have many functional aspects to consider in your particular selection and by all accounts the pilots built in posterior indicator is still the best filter. I do feel it's important to mention that The effects of Gusts are much stronger than many pilots perhaps give credit for. As Paul Mander points out in his Speedweek sessions, if you lose the core it far less likely that the thermal has moved (as many think is the case) but rather that the horizontal gust has simply moved the aircraft off its optimal path, as after all, there are magnitudes of differences of inertia of a thermal air mass and a tiny glider. Richard On 28 Apr 2015, at 12:30 pm, aus-soaring-requ...@lists.internode.on.net wrote: Send Aus-soaring mailing list submissions to aus-soaring@lists.internode.on.net To subscribe or unsubscribe via the World Wide Web, visit http://lists.internode.on.net/mailman/listinfo/aus-soaring or, via email, send a message with subject or body 'help' to aus-soaring-requ...@lists.internode.on.net You can reach the person managing the list at aus-soaring-ow...@lists.internode.on.net When replying, please edit your Subject line so it is more specific than Re: Contents of Aus-soaring digest... Today's Topics: 1. Re: ClearNav Vario (go_soaring) 2. Re: varios, redundancy (DMcD) 3. Re: varios, redundancy (Jim Staniforth) -- Message: 1 Date: Tue, 28 Apr 2015 08:45:13 +1000 From: go_soaring go_soar...@hotmail.com Subject: Re: [Aus-soaring] ClearNav Vario To: Discussion of issues relating to Soaring in Australia. aus-soaring@lists.internode.on.net Message-ID: blu436-smtp97a0b934eaafc8619204bdf7...@phx.gbl Content-Type: text/plain; charset=utf-8 Another report on the new CNv from a user in the states. I concur on 1 sec time constants for pointer and audio. The vario signal is very smooth at this speed. I am in love with the new climb audio!! It's much better at communicating lift in the 0 - 3 kt range than anything Cambridge or Cambridge-like (including CNv 2.7). The pointer is 99% superfluous now. Audio plus averager numbers and I'm good to go! I found the climb cruise vario wind information flawless in Eastern US soaring conditions. Yes, a big Western US gust on the nose will still peg the vario. We're working on that now. The correlation between seat of the pants and the vario is now excellent. 2.7 was better than the Cambridge 302 in this regard, but wasn't the breakthrough sought. Some users liked CNv 1.0 better than 2.x 3.0 is a quantum leap. The correlation is so good now, that it is very easy to tell gusts from thermals (because there's no seat of the pants thump preceding the vario indication. The navigation UI still needs work. It's perfectly functional, but it's too much head in the cockpit time to manage. On 27 Apr 2015, at 08:14, Adam Woolley go_soar...@hotmail.com wrote: Simply phenomenal, I thought the CNv 2.7 was my favourite vario before, now CNv 3.0 it's clearly in the lead. I test flew with V3.0 yesterday in very windy thermal conditions before being able to transfer into local wave. The vario is extremely smooth, no sign of gusts (with the new gust filtering algorithm), the smart averager being quicker to update and far more accurate than the last version. I flew with 1.7s response rate at the beginning, then reduced it to 0.5s, followed by settling at 1.0s; all as smooth and perfect as the other! Are you looking for a new vario for your glider or club, and want to save money? It?s simple now, just buy a ClearNav vario - and thats it. There?s no need for a winter backup now, this vario is impressive. I?ve flown with my vario since the first various were bought out, it?s
Re: [Aus-soaring] Aus-soaring Digest, Vol 139, Issue 48
And there it is... Having now tried at least 8 different manufacturers modern (released in the last 5 years) varios, in terms of gust rejection I find they all work very well until they get hit with the strong, narrow, gusty summer thermals we get between trigger time and the late afternoon when things usually tend smooth out. To my observation, They all struggle to effectively differentiate strong horizontal components from the vertical components and for good reason when one takes the time to fully understand the physics and resolutions of systems involved. To date, I have seen a lot of claims with little or no scientific method to back them up and so far, little observable operational difference when it comes to this one aspect. Modern varios of course now have many functional aspects to consider in your particular selection and by all accounts the pilots built in posterior indicator is still the best filter. I do feel it's important to mention that The effects of Gusts are much stronger than many pilots perhaps give credit for. As Paul Mander points out in his Speedweek sessions, if you lose the core it far less likely that the thermal has moved (as many think is the case) but rather that the horizontal gust has simply moved the aircraft off its optimal path, as after all, there are magnitudes of differences of inertia of a thermal air mass and a tiny glider. Richard On 28 Apr 2015, at 12:30 pm, aus-soaring-requ...@lists.internode.on.net wrote: Send Aus-soaring mailing list submissions to aus-soaring@lists.internode.on.net To subscribe or unsubscribe via the World Wide Web, visit http://lists.internode.on.net/mailman/listinfo/aus-soaring or, via email, send a message with subject or body 'help' to aus-soaring-requ...@lists.internode.on.net You can reach the person managing the list at aus-soaring-ow...@lists.internode.on.net When replying, please edit your Subject line so it is more specific than Re: Contents of Aus-soaring digest... Today's Topics: 1. Re: ClearNav Vario (go_soaring) 2. Re: varios, redundancy (DMcD) 3. Re: varios, redundancy (Jim Staniforth) -- Message: 1 Date: Tue, 28 Apr 2015 08:45:13 +1000 From: go_soaring go_soar...@hotmail.com Subject: Re: [Aus-soaring] ClearNav Vario To: Discussion of issues relating to Soaring in Australia. aus-soaring@lists.internode.on.net Message-ID: blu436-smtp97a0b934eaafc8619204bdf7...@phx.gbl Content-Type: text/plain; charset=utf-8 Another report on the new CNv from a user in the states. I concur on 1 sec time constants for pointer and audio. The vario signal is very smooth at this speed. I am in love with the new climb audio!! It's much better at communicating lift in the 0 - 3 kt range than anything Cambridge or Cambridge-like (including CNv 2.7). The pointer is 99% superfluous now. Audio plus averager numbers and I'm good to go! I found the climb cruise vario wind information flawless in Eastern US soaring conditions. Yes, a big Western US gust on the nose will still peg the vario. We're working on that now. The correlation between seat of the pants and the vario is now excellent. 2.7 was better than the Cambridge 302 in this regard, but wasn't the breakthrough sought. Some users liked CNv 1.0 better than 2.x 3.0 is a quantum leap. The correlation is so good now, that it is very easy to tell gusts from thermals (because there's no seat of the pants thump preceding the vario indication. The navigation UI still needs work. It's perfectly functional, but it's too much head in the cockpit time to manage. On 27 Apr 2015, at 08:14, Adam Woolley go_soar...@hotmail.com wrote: Simply phenomenal, I thought the CNv 2.7 was my favourite vario before, now CNv 3.0 it's clearly in the lead. I test flew with V3.0 yesterday in very windy thermal conditions before being able to transfer into local wave. The vario is extremely smooth, no sign of gusts (with the new gust filtering algorithm), the smart averager being quicker to update and far more accurate than the last version. I flew with 1.7s response rate at the beginning, then reduced it to 0.5s, followed by settling at 1.0s; all as smooth and perfect as the other! Are you looking for a new vario for your glider or club, and want to save money? It?s simple now, just buy a ClearNav vario - and thats it. There?s no need for a winter backup now, this vario is impressive. I?ve flown with my vario since the first various were bought out, it?s never failed. I only fly with one vario now in my glider, and trust it solely. I found the wind update to be excellent, though I can understand why some want straight line wind updates incorporated - only once I got into the wave, I found the wind would only update at the 180* turn upon each lap of the
Re: [Aus-soaring] Aus-soaring Digest, Vol 139, Issue 48
To my observation, They all struggle to effectively differentiate strong horizontal components from the vertical components and for good reason when one takes the time to fully understand the physics and resolutions of systems involved. Agreed. However, once you understand the effects of horizontal ghosts (as explained to me by G Dale) then the penny starts to drop. The noise is different (on my audio vario at least. The vibrations on your bum and the glider are different. The wibbly wobbly needle on the Winter vario is different. Your experience may be different too but once the penny dropped for me, I stopped longing for a 3D intertial guidance platform with 4th generation ghost sensing and just started listening to what my glider was telling me about the air. Quite a cheap and effective process which needs little electricity to operate. Isn't that what Bruce was saying? D ___ Aus-soaring mailing list Aus-soaring@lists.internode.on.net To check or change subscription details, visit: http://lists.internode.on.net/mailman/listinfo/aus-soaring
