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PHI - Position and Homing Indicator: Difference between revisions
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PHI - Position and Homing Indicator (view source)
Revision as of 19:46, 24 November 2020
, 24 November 2020→Parts constituting the apparatus
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* Doppler radar management unit. | * Doppler radar management unit. | ||
===Guide to using the PHI system=== | |||
''The user guide is based on the PHI device included in the FIAT G91R1B project. There are no particular differences in the case that it is used in other airplanes made in the period of the years from 1955 to 1970.'' | |||
====Flight planning==== | |||
Flight departure from Innsbruck airport (LOWI rwy: 08) and arrival to Bergamo Orio (LIME rwy: 30) airport. | |||
Flightgear's route manager is a good way to plan your route using the map to extract references and see the actual planned route.<br>Looking at the ''Route Manager'' table, it can be seen that there is always an angle (ODO) with respect to north and the length of the section to be covered. The last stretch is the one in sight of the airport and must be managed differently with the classic methods of instrumental or visual navigation. | |||
Looking at the ''Route Manager'' ('''RM''') table, it can be seen that there is always an angle (ODO) with respect to the north and the length of the section to be covered. The last stretch is the one in sight of the airport and must be managed differently with the classic methods of instrumental or visual navigation. | |||
To load the data into the PHI table (in fact it is as if you were programming the "Selector Unit Programmer" ('''NCU''') portable cassette, just click on the [Activate] button of the '''RM'''. you go now on the menu [''Fiat G91''] followed by [''PHI - route system''] opens a window showing various parameters among which we highlight 5 columns that correspond to the 5 'buttons '''NCU''', these columns have been filled in by the distance to cover, the direction and finally the altitude of the flight obtained by the Route Manager (if the altitude is zero in the '''RM''' this is set to 15,000 ft). | |||
Note: | |||
:the PHI programming framework also contains other parameters among which we have the convergence <ref>The convergence is a necessary parameter for calculating rhumb line air routes and is calculated as the average of the latitude of the departure airport and of the arrival airport. The PHI allowed the programming of the convergence through a special panel, in case it was used in civil aviation or on military transport air vehicles, or through a regulator placed in the ``Signal amplifier and Junction-Box'' regulated by a specialized technician, in what required the opening of a special external door. </ref> | |||