VASI and PAPI sytems

[Mr. Bones]

hello guys,

can anyone tell me the difference between the PAPI and VASI navigational systems? there must be a difference otherwise they wouldn't have a different name...

thanks!

[Fly2e]

PAPI
http://icl.cs.utk.edu/papi/

http://icl.cs.utk.edu/projects/papi/overview/

Here is me in the Baron with the PAPI lights on approach!




VASI
http://www.flytandem.com/vasi/vasi.htm

http://www.academy.jccbi.gov/cgi/course.cgi?cn=44118

http://www.thaiflyingclub.com/linkrunway05vasi.html

http://www.mail-archive.com/flightgear- ... 19780.html

http://www.mail-archive.com/flightgear- ... 19773.html

Hope this helps Ken!

Dave

[Mr. Bones]

you again...thanks Dave, i owe you one!

but with PAPI i meant something else, " Precision Approach Path Indicator ", but it's ok, i've already found some info on the web!

thanks again!

[Fly2e]

Precision Approach Path Indicator PAPI

A precision approach path indicator (PAPI) system shall be provided to serve the approach to a runway whether or not the runway is served by other visual approach aids or by non-visual aids, where one or more of the following conditions exist:

1. The runway is used by jet aircraft or other aircraft with similar approach guidance requirements;

2. The pilot of any type of aircraft who may have difficulty in judging the approach due to:

[Dan]

If you have Fs2k2 then pop down to Cardif EGFF. Their runway 12 has a single bar PAPI.
Dan

[Fly2e]

VASI INFO!!!

VISUAL  APPROACH  SLOPE  INDICATORS (VASI)

[Mr. Bones]

stop Dave...STOOOOOOOPPPPPPPPPPP!!!!!! i can't take it anymore...too much info. i'll have a beard when i've read all this.

thanks dude, i owe you two now!  ;)

[Dan]

Think you have a lot of reading? I have just finished a 4298 word PC building article, and theres at least another 9 pages to go! Arr, my eyes will never be the same again!
Dan

[Mr. Bones]

still one question about the PAPI system.

on what technique is it based or what physical law? has it something to do with Fresnel?  ;)

[Ivan]

AFAIK it's a box with a lamp in it, with a red and a white clolred aperture in it