I should point out that my experience is based on using a vario source. I am
not sure if the glider assistant will perform as well without a vario source
such as 302, but looks like Tobias use it successfully even with barometric
pressure only. I doubt it will work well with only a GPS source.
I did not notice any noticeable delays. I am just following the recommendation
from the manual and it works very well, especially when I otherwise lost some
concentration:
1. : At the moment the maximum peak on the polar diagram
passes the top of the display; that is a quarter of the circle
before you reach that part again: Open the circle a bit
to displace the circle centre in the direction of the strongest
climb rate.
2. : At the moment the maximum peak on the polar diagram
passes the gliders position; the vario should show the maximal
climb rate: Narrow the circle as much as possible to
centre the thermal updraft at it’s maximum.
Ramy
________________________________
From: Tobias Bieniek <tobias.bien...@gmx.de>
To: Ronald Niederhagen <ronald_niederha...@freenet.de>
Cc: "xcsoar-user@lists.sourceforge.net" <xcsoar-user@lists.sourceforge.net>
Sent: Friday, July 25, 2014 2:42 AM
Subject: Re: [Xcsoar-user] Thermal assistant Inforbox
Hi Ronald,
I've been using the assistant for quite a few years now, mostly
connected to a Flarm connected via rs232 cable to PDA, then IOIO and
now BT to my Nexus 4. The Flarm only outputs the barometric or
pressure altitude every second and XCSoar derives a lift value from
that. There might indeed be a small delay but from my experience it is
well below "several seconds" and since the delay is constant you can
get used to it pretty quickly.
Tobias
2014-07-25 11:28 GMT+02:00 Ronald Niederhagen <ronald_niederha...@freenet.de>:
> I've never tried the thermal assistant, but after Ramy's report I
> certainly will.
>
> However, those of you who had been using it: there is a delay of at
> least a couple of seconds between the cause (lift, position, speed,
> etc.) and the effect (when XCS shows it). I have 2 questions regarding
> that: 1. how long is that delay (for the different data sources) and is
> that always the same? 2. isn't that delay impacting the value of the
> thermal assistant?
>
> For instance: if CAI302 is my data source (GPS, TK, IAS, Baro) how long
> does it take until the instrument presents the data on the serial port.
> Certainly not instantaneously! And then, XCS presumably does quite a bit
> of data processing and filtering. How long does that take?
>
> When I watch the Circling Screen it's obvious that there is a delay of
> ~3 sec between the actual heading of my glider and the heading of the
> symbol on the display. What is that delay for lift, speed, ...?
>
> Any thoughts?
>
> Ronald
>
> Am 21.07.2014 05:31, schrieb Ramy Yanetz:
>> FWIW I thought I should share with XCSoar users my experience with the
>> thermal assistant.
>>
>> I admit I didnt think I needed a thermal assistant and never used one with
>> Winpilot and XCSoar before, especially since I didnt want my map to be
>> replaced with the thermal assistant whenever I am thermaling. but recently
>> I noticed that it is also available as an infobox, and since I had place for
>> an extra infobox in my thermal page I figured I will give it a try. I found
>> out that if I am completely focused it wouldnt tell me more than the vario,
>> the trace and the seat of my pants tells me, but sooner or later I am
>> loosing some focus, especially later in the flight when getting tired, and
>> this is when the thermal assistant is a huge help. It makes finding the core
>> so much easier. 9 out of 10 times it would take me back to the core with one
>> circle. Just follow the instructions in the manual how to use it and you
>> will find it works very well.
>>
>> Just my 2 cents,
>>
>> Ramy
>>
>>
>>
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