Re: [aus-soaring] Field Landings Web Page - Fly within capture zone of airfield?

Thu, 02 Oct 2003 04:11:59 -0700

Ian

Which is the best program to look at the database of turnpoints to check (landing field elevations e.g.)?

Regards

Ed Martel

On Wednesday, October 1, 2003, at 09:35 AM, Ian McPhee wrote:

I believe the plan within gliding in Oz is to use more airfields/airstrips
as turnpoints rather than the silos which were needed for the photo days.
Unfortunately comp organizers tend not to put the field elevation in
official downloadable data bases so we do not get the benefit of full
capabilities of our systems. Both the older Cambridge LNAV GPS-NAV system
and the new 302/303 and many other systems work real easy for glide to
landing place if it is in the official data base contains landing place
elevation.
Ian McPhee
Box 657 Byron Bay NSW 2481 Australia
Tel +61 (0)2 66 847 642 Mob +61 (0)428 847 642
[EMAIL PROTECTED]

----- Original Message -----
From: "Alan Wilson" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Monday, September 29, 2003 8:39 AM
Subject: RE: [aus-soaring] Field Landings Web Page - Fly within capture zone
of airfield?


I understand in Europe the cost of outlanding is almost prohibitive, so
flying always within the capture zone of a known 'safe' airfield is almost
essential. Roland Poss was in out club several years ago and did
considerable research on outlanding strips and flew always within final
glide range of these.

What would make safe Xcountry gliding simpler would be to not only have
them 
programmed in the flight computer, but an easy interface to a B2000 or
similar to confirm when altitude is sufficient to reach the next
airfield/paddock.  Say airfields indicated on the iPaq map and gliding
distance circles/eclipses at 0 Mac ready centred on current position
[noting
wind and altitude/terrain!]

Now there is a challenge.

Does such a user friendly system exist?

Alan Wilson



-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Behalf Of Mike
Borgelt
Sent: Sunday, 28 September 2003 7:37 PM
To: [EMAIL PROTECTED]
Subject: Re: [aus-soaring] Field Landings Web Page - Lake Keepit
Airfield Database


At 05:36 PM 28/09/03 +1000, you wrote:
We at Lake Keepit have been concerned for some time at the potential
damage
to Club gliders and pilots from inappropriate paddock choice. While we
agree
with the comments about teaching pilots how to assess paddocks (and
continue
to pursue this) there's no doubt than finding an airfield or ag strip is
normally a much safer option.

Over the last couple of years we have accumulated a register of airfields
and ag strips, including upper air photographs and GPS coordinates. A
loose-leaf book of these outlanding airfields is maintained by the Club
with
as much pertinent data as can be assembled - photos, runway direction(s),
owner name and phone, condition of field, cautionery notes etc. Study of
this file by intending cross country pilots is encouraged.

The Club's turnpoint database for downloading to data loggers/GPSs
incorporates the coordinates for all these known airfields, with as much
descriptive info than can be fitted into GPS data fields to assist pilots
make sensible choices.

Within a rough semicircle of 150km radius we have a database of 90
points,
of which 66 are landable airfields or ag strips. (We have adopted
airfields
as turnpoints, rather than silos or other features, wherever available.)
Most cross country soaring within this area can now be performed without
losing glide slope to a suitable strip.

This will be a feature of the upcoming NSWGA State comp in November and
will
be another safety initiative of the Lake Keepit comp.

The club is indebted to Harry Medlicott whose initiative this has been,
and
who has collected the lion's share of the info on these fields. This has
been an important part of his drive to improve safety in gliding, which
will
be strongly empasised in the forthcoming State competition in Nov at
Keepit. 

Dave Shorter
email [EMAIL PROTECTED]  (note no ".au" in address)
11 Lighthouse Crescent,
Emerald Beach,
NSW 2456,   Australia
Phone (02) 6656 1979
Fax  (02) 6656 2983


I believe Ron Geake has done this at Gympie also. They can now fly cross
country while in glide range of suitable airstrips.

One resource you might consider to do this with is the AOPA Airfield
guide. 

Mike
Borgelt Instruments - manufacturers of quality soaring instruments
phone Int'l + 61 746 355784
fax   Int'l + 61 746 358796
cellphone Int'l + 61 428 355784
          Int'l + 61 429 355784
email:   [EMAIL PROTECTED]
website: www.borgeltinstruments.com


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