Hoyt A. Fleming writes:
I was shooting an approach with FG and noticed that when I pitch up the
aircraft, the VASI lights turn white. Similarly, when I pitch down the
aircraft, the VASI lights turn red. I loaded the UFO and verified the VASI
lights change color when the UFO is stationary and
Is that ToDo list published somewhere?
Ryan
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Behalf Of Curtis L.
Olson
Sent: Monday, December 01, 2003 8:35 PM
To: FlightGear developers discussions
Subject: Re: [Flightgear-devel] VASI question
Hoyt A. Fleming writes
Jim Wilson writes:
Take a look at Fig's 2-1-4 on that page for the various number of light
configurations.
There is a diagram with measurements on this page but it's pretty hard to read:
http://www.tpub.com/celec/20.htm
The system they describe has 12 boxes, 3 lights in each box
Curtis L. Olson writes:
Jim, the short answer is yes, I'm making these as a 3d model. But I'm
doing it as part of the airport generation phase.
It would be nice if I could figure out how to do whatever you're doing
with a model animation; then we could place the VASIS and PAPI systems
David Megginson [EMAIL PROTECTED] said:
Curtis L. Olson writes:
Jim, the short answer is yes, I'm making these as a 3d model. But I'm
doing it as part of the airport generation phase.
It would be nice if I could figure out how to do whatever you're doing
with a model animation;
David Megginson writes:
It would be nice if I could figure out how to do whatever you're doing
with a model animation; then we could place the VASIS and PAPI systems
using the regular 3D model manager, and add the default ones from
default.apt in one giant batch script. That would also let
Jim Wilson wrote:
How do they work in real life? It seems that animation shouldn't be
necessary.
I got to see a 2-light PAPI up close at Fishers Island*, NY once.
It's an astonishingly simple device. Basically, it's a box with a
bright white interior. At one end is a lens. At the other (on
Jim Wilson writes:
It would be nice if I could figure out how to do whatever you're doing
with a model animation; then we could place the VASIS and PAPI systems
using the regular 3D model manager, and add the default ones from
default.apt in one giant batch script. That would also
A search for vasi lights on google turned up (among othr things)
http://www.bayareapilot.com/vasiPAPI.htm
Might be usefull.
jj
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Curtis L. Olson writes:
Does anyone have any specific dimensions for the layout and size of a
VASI system?
From what I've been able to find, the VASI/PAPI system should be 50'
off the side of the runway and about 950ft/285m from the threshold. I
know that each of the 4 PAPI lights
Yes, there are definitely complications, but right now our data has
N=none, V=vasi, P=papi, so I'm planning to start simple.
What I'm looking for is somethingn to the effect that a VASI light bar
is a row of n lights spaced x meters apart. VASI light bars are
spaced y meters apart along the
For the U.S., the numbers are documented in the AIM to give the angles etc
for both 2-bar and 3-bar VASI and normal PAPI systems. Generalizing:
A 2 bar VASI is simply a 3 bar VASI with one of the bars missing
so I recommend doing 3 bar units consistently everywhere.
The PAPI unit has all the
Curtis L. Olson writes:
What I'm looking for is somethingn to the effect that a VASI light bar
is a row of n lights spaced x meters apart. VASI light bars are
spaced y meters apart along the length of the runway.
And if I'm really lucky I'd get the difference in degrees in alignment
David Megginson writes:
Curtis L. Olson writes:
What I'm looking for is somethingn to the effect that a VASI light bar
is a row of n lights spaced x meters apart. VASI light bars are
spaced y meters apart along the length of the runway.
And if I'm really lucky I'd get the
Have you checked the
* AIM description of the visual aid
* Airport construction recommendations
* TERPS description of approach/landing tolerances
... ?
Well, I'm all googled out and I still haven't come up with anything
for VASI (although I have good data for PAPI.) I guess I'll just have
Alex Perry writes:
Have you checked the
* AIM description of the visual aid
* Airport construction recommendations
Yes, as far as a I know, although I'll never claim I've exhaustively
searched all FAA docs.
* TERPS description of approach/landing tolerances
What is terps and where can I
Curtis L. Olson writes:
What I'm looking for is somethingn to the effect that a VASI light bar
is a row of n lights spaced x meters apart. VASI light bars are
spaced y meters apart along the length of the runway.
And if I'm really lucky I'd get the difference in degrees in
Norman Vine writes:
Curtis L. Olson writes:
What I'm looking for is somethingn to the effect that a VASI light bar
is a row of n lights spaced x meters apart. VASI light bars are
spaced y meters apart along the length of the runway.
And if I'm really lucky I'd get the
* TERPS description of approach/landing tolerances
What is terps and where can I find it?
The US standard for TERminal instrument ProcedureS ...
http://www.terps.com/
http://av-info.faa.gov/terps/
Warning, for those on dialup, the actual TERMS manual is a HUGE PDF!
Curtis L. Olson writes
Norman Vine writes:
Curtis L. Olson writes:
What I'm looking for is somethingn to the effect that a VASI light
bar
is a row of n lights spaced x meters apart. VASI light bars
are
spaced y meters apart along the length of the runway.
And
Curtis L. Olson [EMAIL PROTECTED] said:
Norman Vine writes:
maybe this would help
http://www.faa.gov/aim/Chap2/aim0201.html#2-1-1
That gives a good overview of how the VASI works from a pilot's
perspective, but it still doesn't show exactly how the vasi bars are
positioned relative the
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