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时间:2011-04-23 10:12来源:蓝天飞行翻译 作者:航空
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Automatic system mode selection is provided so that when the PERF mode is selected on the FGCP, the PMS will engage into the appropriate climb, cruise, or descent mode of operation. The PMS will use existing vertical speed and altitude (compared to armed altitude) to determine appropriate flight regime. The climb, cruise or descent mode, which will be entered, is the currently armed (or selected) mode with a default to optimum for CLB or CRZ and NON-OPT MACH/IAS for descent. The descent mode entered is optimum if the airplane is within 5 NM of the optimum descent path at time of mode selection. The PMS will always honor the armed altitude. Once in a cruise mode, the PMS will not leave the current altitude to climb or descend until the new altitude has been armed and the mode change commanded by the pilot.
PMS generated data, command entries, and performance data are displayed on the CDU in the form of pages. The top line in the CDU display area is used as a combination page title / scratchpad line. The remaining three lines are numbered and are used for data entry and display or in conjunction with line select keys for callup of subpages (expansion of information on a given line). Page title relates the displayed page to the function key calling-up that page. Alert/advisory messages appear in the scratchpad area. Data entered will first be displayed in the scratchpad. All data entries are loaded in the scratchpad from left to right. Data entries of more than 12 characters (i.e., position latitude and longitude) are accommodated by an automatic shift of the first 12 characters one space to the left for each additional character entered, thus spilling into the page title area. When appropriate line select key is pushed, data will be transferred to the left side of the selected data line. If data is to be transferred to the right of the selected data line, the slash (/) data entry key must be pushed before entering data into the scratchpad. Data loading has priority over display information or alert/advisory messages which may be displayed.
Continental
Rev. 12/01/00 #29  Flight Manual
Certain data entered may require a solution from the computer. When a solution is not available within one second, dashes will appear in the scratchpad. When the solution becomes available, the dashes are automatically cleared and the required data displayed.
Two planning pages are available. Plan page 1, PLAN, permits entry of weight and trip data. Plan page 2, PLAN-CRZ, permits entry of planned cruise flight levels, average trip wind component and temperature data. Data for both plan pages may be entered during the ground preflight and the computed climb, cruise and descent profile reviewed. When using the first planning page, the PMS interprets gross weight and fuel weight data as follows:
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One to six numeric characters entered with a decimal point is displayed on a data line rounded to the nearest thousand pounds (KLB).

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One to three numeric characters entered without a decimal point is displayed on a data line as entered.

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Four to six numeric characters entered without a decimal point is displayed on a data line rounded to the nearest thousand pounds (KLB).

Distance (ground distance) entries are entered to the nearest nautical mile (NM). When using the second planning page, cruise altitudes are displayed on a data line in flight level (FL) format, separated by a slash (/) as necessary. The PMS interprets cruise altitudes as follows:

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Three or less numeric characters entered is interpreted as an entry to the nearest 100 feet.

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Four or five numeric characters entered is interpreted as an entry to the nearest foot.

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Entries of either type will be displayed on a data line in FL format rounded to the nearest 100 feet.

Three basic climb modes are CLB OPT, CLB MAX, and CLB NON OPT. The OPT mode is basic and is automatically selected for all climbs unless manually changed using the CDU. The MAX mode is selected by operation of the slew key and data line select key 1 operation. The NON OPT mode is obtained by pilot input of longitudinal speed. Operation of the slew switch in either direction will cause the display to cycle through all available display pages. When using climb pages, the PMS interprets altitude entries as follows:

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All entries must be five numeric characters or less.

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Three or less numeric characters entered is interpreted as an entry to the nearest 100 feet. In addition, if the entry is 180 or greater it will be displayed in FL format.

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Four or five numeric characters entered is interpreted as an entry to the nearest foot and will be displayed as entered.

The PMS interprets climb speed entries as follows:

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A maximum of three numeric characters is permitted and can be preceded by a decimal point.

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If first character entered is a number 1, 2, 3, or 4, the entry is interpreted as indicated airspeed (IAS). If first character is either a decimal point or a number greater than four, the entry is interpreted as a Mach number. The data line display will be padded with a trailing 0 to display two numeric characters for a single numeric character entry.
 
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