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Old November 3rd 06, 01:33 PM posted to rec.aviation.piloting,rec.aviation.student
Judah
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Posts: 936
Default How do you find the limits of areas on a chart?

Mxsmanic wrote in
:

Judah writes:

Yes. When you are driving, how do you ensure that you are maintaining a
safe distance from the guardrail, or from the car in front of or next to
you? How about from a Stop Sign or Traffic Light?


By looking out the window. I don't search for traffic lights or
guardrails on a map. If I did, I'd be tumbling down a mountainside in
no time.


But if you are driving somewhere you haven't been before, you might have a
map and use it to navigate to your destination, right?

Does this cause you to tumble down the mountainside?

See above. It is done routinely. Additionally, full-motion
simulators use collimated projections that place everything at optical
infinity, and they work very well indeed, even though there is no
depth perception at all.


There are many monocular cues to depth perception that are not effectively
simulated.

It's required if the chart doesn't tell you at a glance how to
determine the boundaries of the airspace.


No it isn't.

And certainly there is no harm in leaving yourself a bit of lattitude
if you don't have tools to do it with exacting precision.


Except when you have forbidden areas threatening on both sides.


And yet somehow, miraculously, pilots do this on a regular basis, and even
before there was GPS! Perhaps we know something you don't.

I wonder if the advent of moving-map navigation aids has made pilots
more prone to fly closely between and around controlled airspaces.
Certainly it seems like a practical advantage of such devices,
provided that they don't fail.

I use an EHSI to fly patterns in the sim, but that is mainly because
it's so hard to look out the side windows (I hope--at least I hope
that visibility is a _lot_ better in a real aircraft).


Visibility out the side windows in real life is pretty good. I haven't
played with MSFS since the 98 version, but back then the default
perspective out the window in a Cessna was SIGNIFICANTLY different and more
restrictive than in the real world. I had to make several adjustments to
the settings that control the angle of perspective, and I had to reduce the
size of the control panel to even come close.