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Forum: Tech Log

5th Dec 2013, 15:10

Replies: 55

PAPI usage

Views: 24,408

Posted By underfire

Bloggs, just for you! In order for you to...

Bloggs, just for you!

In order for you to see 2 reds and 2 whites on a 3° glideslope...ie to see both the Unit B and Unit C...

(this is the math from the other diagram, they illustrate the...

Forum: Tech Log

5th Dec 2013, 04:01

Replies: 55

PAPI usage

Views: 24,408

Posted By underfire

You are missing the numerous factors involved in...

You are missing the numerous factors involved in the design. There are differences in the assumed eye height vs the antennae height. (Note the EW eye to wheel height vs AW antennae to wheel height...

Forum: Tech Log

4th Dec 2013, 21:57

Replies: 55

PAPI usage

Views: 24,408

Posted By underfire

The diagram is coincident, both the ILS and PAPI...

The diagram is coincident, both the ILS and PAPI are set at 3°. The diagram shows where the points meet, when and how they diverge.

The optimum is 3°, but it is often higher/lower depending on...

Forum: Tech Log

3rd Dec 2013, 21:39

Replies: 55

PAPI usage

Views: 24,408

Posted By underfire

distances: http://i40.tinypic.com/dpkaro.jpg

distances:
http://i40.tinypic.com/dpkaro.jpg

Forum: Tech Log

3rd Dec 2013, 21:28

Replies: 55

PAPI usage

Views: 24,408

Posted By underfire

This diagram from a design manual may be helpul...

This diagram from a design manual may be helpul as to why there are differences.

http://i43.tinypic.com/2laq3rn.jpg

Forum: Tech Log

3rd Dec 2013, 21:11

Replies: 55

PAPI usage

Views: 24,408

Posted By underfire

From the FAA AIM Chapter 2. Aeronautical Lighting...

From the FAA AIM Chapter 2. Aeronautical Lighting and Other Airport Visual Aids

b. Precision Approach Path Indicator (PAPI). The precision approach path indicator (PAPI) uses light units similar...

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