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Derek,
All
cables will be available at the comp, simple 2 wires to + and - , some Velcro ,
that's it.
The
latest problem that is causing delays is the customs software that is holding
the nation to ransom, our memory chips and voltage regulators are stuck in a
queue!
Cheers
Nigel
Nigel Andrews
Managing Director
RF Developments Pty Ltd
"A Queensland Company devoted to Research and Development in
aviation electronics"
Email [EMAIL PROTECTED]
Web www.rf-developments.com
Ph: (61) 7 54635670 Fax: (61) 7 54635695
**************DISCLAIMER************
The information contained in the above e-mail message or
messages (which includes any attachments) is confidential and may be legally
privileged. It is intended only for the use of the person or entity to which it
is addressed. If you are not the addressee any form of disclosure, copying,
modification, distribution or any action taken or omitted in reliance on the
information is unauthorised. If you received this communication in error, please
notify the sender immediately and delete it from your computer system network.
I can’t think of a
better way to trial the Flarm than a competition. Good
decision
What about the power
requirements? Are they self powered or do we have to lash together some
connectors?
Do you have a link to
any further details?
-----Original
Message-----
From:
[EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Dave Shorter
Sent: Wednesday, 26 October 2005 11:06
AM
To: Discussion of issues
relating to Soaring in Australia.
Subject: Re: [Aus-soaring] Zaon Flight
Systems collision avoidance
Yes. - and the tugs also will be
fitted.
We have been able to obtain
sponsorship to pay for the hire of units to fit out all entries in the comp -
thanks to NSWGA, Oamps, and QBE.
While it will not be mandatory we
expect every pilot take advantage of this offer and participate in the trial.
There will be a decided safety benefit to all if everyone joins the
trial.
Dave Shorter - Contest
Director
----- Original Message -----
Sent:
Wednesday, October 26, 2005 8:50 AM
Subject: RE:
[Aus-soaring] Zaon Flight Systems collision
avoidance
Are
you planning to trial this in all the entered gliders then
Nigel?
-----Original
Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of RF Developments Pty
Ltd
Sent: Tuesday, 25
October 2005 5:17 PM
To:
'Discussion of issues relating to Soaring in Australia.'
Subject: RE: [Aus-soaring] Zaon Flight
Systems collision avoidance
OzFLARM, which uses the core
FLARM micro has a different way of presenting the information ( see OzFLARM
news ) If a glider is behind you, further than 1 km , a green LED will light
up in that direction. If he is less than 1 km , a RED led will light up. If
he is a potential threat , the red will blink and the audio will go
off.
The core collision algorithms
are the same.
I should have the manual ready
in a few weeks, around the time 66 OzFLARMS are going to be flying around in
close formation at Lake Keepit!
Nigel Andrews
Managing Director
RF Developments Pty Ltd
"A Queensland Company devoted to Research and
Development in aviation electronics"
Email [EMAIL PROTECTED]
Web www.rf-developments.com
Ph: (61) 7 54635670 Fax: (61) 7
54635695
**************DISCLAIMER************
The information contained in the above e-mail
message or messages (which includes any attachments) is confidential and may
be legally privileged. It is intended only for the use of the person or
entity to which it is addressed. If you are not the addressee any form of
disclosure, copying, modification, distribution or any action taken or
omitted in reliance on the information is unauthorised. If you received this
communication in error, please notify the sender immediately and delete it
from your computer system network.
-----Original
Message-----
From:
[EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Geoff Kidd
Sent: Tuesday, October 25, 2005 3:29
PM
To: Discussion of
issues relating to Soaring in Australia.
Subject: Re: [Aus-soaring] Zaon
Flight Systems collision avoidance
Thanks
for that Mark. It assists understanding a lot.
I found
it interesting that based on the latter part of that video, it would
be possible to be at the same height and flying towards (but a tad
behind) that other glider ... and not get any warning unless the
tracks intersect or converge ................ and if the
other remains unseen it would be possible to tighten the turn
and converge to get a warning just as they
collide.
For some
reason I assumed that if you are constantly getting closer to, but
not intersecting with, another Flarm equipped aircraft, then you
would get some type of "heads-up" (poor pun)
warning.
I'm not
complaining, mind you, I just want to understand the way that it operates.
It just proves that Flarm is certainly useful but it is an aid to the
"see" of see-and-avoid, but there can never be any guarantees even if all
aircraft are equipped.
On
looking at that video again, the LEDs were unlit during the turn to port
and early in the approach to the other aircraft. How does it indicate
proximity as per your 2nd last para?
Regards
& thanks for your response Geoff
----- Original
Message -----
Sent:
Tuesday, October 25, 2005 2:34 PM
Subject: Re:
[Aus-soaring] Zaon Flight Systems collision
avoidance
Geoff Kidd
wrote:
> In trying to understand your
explanation, and wanting to fully grasp
> the way these things
work, I looked again at the Flarm video on DG's
> website http://www.dg-download.de/Videos/flarm-rennes.wmv.
>
In that case the display alarms initially at the 12.30/01.00 LED,
> which is about where the other glider is, when the tracks of
the 2
> aircraft appear to be intersecting but when there also
appears to be a
> reasonable height separation ..... and it looks
to me like there was not
> a "risk of collision".
They
were on a converging heading. The FLARM was essentially
saying,
"Even though the separation is high, if you continue the way
you
are at the moment you will probably hit each other."
Note
that the alarm tone was different to what it was later on when
they
were closer.
> The pilot then bears
away to starboard and turns back to port to fly
> directly at or
towards the other aircraft.
Obviously not directly at it, because
they didn't hit each other.
Unless it's directly in front of you,
flying directly at the position
another aircraft is in *right now*
will cause you to miss it, because
by the time you reach that
position the other aircraft won't be
there anymore.
They were
on diverging headings during that phase of the demo, when
the alarm
was silent. They were in close proximity to each other,
but
there was no collision risk, so there was no
alarm.
> It looks to me that there is
a greater risk of collision after he
> turns back to port towards
the other ship when it is visible in his
> screen ........... yet
the alarm doesn't sound again until he is
> reasonably
close.
Reasonably close *and converging*.
There is no
mystery to this, Geoff. You can fly as close to another
glider
as you want; but if you're not converging with it, FLARM
won't
bother to sound an alert (it'll still indicate proximity on its
visual
display, but it won't sound an alarm to indicate an imminent
collision)
That's the right answer, isn't it? Nobody wants
a "collision avoidance"
system which chirps continuously just because
you happen to be sharing
a thermal with someone else, do they?
What we really want is a collision
avoidance system which is silent
when you're sharing a thermal with
someone else *unless you're about
to hit each other*.
-
mark
--------------------------------------------------------------------
I
tried an internal
modem,
[EMAIL PROTECTED]
but it hurt when I
walked.
Mark Newton
----- Voice: +61-4-1620-2223 ------------- Fax:
+61-8-82231777
-----
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