OCEM PAPI, Руководство по эксплуатации и обслуживанию

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Description
UT-MT-0970_1.0_02-08-2022 (EN)
Use and Maintenance Manual
PAPI
17
The theoretical distance D
T
between the optical axis of the unit or the centre of the TLOF platform can be calculated
with the following formula:
where the M angle is equivalent to the approach angle minus 2 minutes of arc. The approach angle depends on
the installation type:
●
Airfield: (angle referred to the second unit on the side of the runway)
●
Airfield with ILS system (Instrument Landing System): (angle referred to the second
unit on the side of the runway)
●
Airfield with MLS system (Microwave Landing System): (angle referred to the second
unit on the side of the runway)
●
Helipad: (angle referred to the left side, from the point of view of the pilot
approaching)
The actual distance of the optical axis D
O
of the unit in relation to the threshold can be calculated with the following
formula (distances expressed in m):
The actual elevation of the optical axis Q
OC
in relation to the threshold or to the axis of the platform TLOF can be
calculated with the following formula (distances expressed in m):
For more information on the meaning of the symbols, please refer to the previous paragraphs.
After completion of the value of the actual distance D
O
and of the actual elevation D
OC
is possible to obtain the
value of the parameters required for civil works.
The actual distance of the front leg D
X
in relation to the threshold or to the axis of the platform TLOF can be calculated
with the following formula (distances expressed in m):
The elevation of the concrete platform C
X
in relation to the threshold can be calculated with the following formula
(distances expressed in m):