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Old March 18th 09, 05:06 PM posted to rec.aviation.soaring
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Default Seniors USA 2009 Start and Finish notes..... # 711 reporting

On Mar 18, 12:47*pm, Darryl Ramm wrote:
On Mar 18, 9:33*am, "
wrote:

Oh great, now we are down to fiddling with altimeters, closing/opening
cockpit vents, and staring at a variety of altitude readouts (I
personally watch both the mechanical altimeter, after tapping, and my
SN10 digital readout) while on short final glide.


I still think there is a better (safer, easier) way, just haven't
figured it out yet.


Kirk
66


And the issue there is that most SN10s will be installed with the
static connected to the ship's static (that's what the manual says,
and is probably best for accurate wind calculations etc.) and AFAIK is
not able to display any pressure altitude delivered via NMEA from an
attached IGC flight recorder. So the SN10 is normally not sensing
cockpit ambient and unable to report what any attached IGC flight
recorder is sensing.

Hopefully the take away here is more allow a saftey margin and do soem
tests before hand rather than watch some stupid display while killing
yourself and others at a finish.

Darryl


Maybe us cheap guys are doing better with this. My PDA is hooked up
to my logger and uses its output for altitude, so in theory I'm seeing
what's going into the logger file, no matter what static source is
being used for that (or GPS altitude for that matter). All I have to
do is
just fly the final glide numbers so I arrive above the required finish
altitude.

-- Matt