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庞巴迪挑战者605公务机机组操作手册 CL605-AUTOMATIC_FLIGHT_CONTROL_SYSTEM(25)

时间:2011-10-27 00:46来源:蓝天飞行翻译 作者:公务机
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ATS Operation
The following section provides a summary of autothrottle system operations during aircraft power-up, and for all phases of flight.

ATS Tests
ATS Computer Self-Test
The ATS performs an automatic self-test when all sensors become valid following autothrottle computer power-up. Prior to all sensors becoming valid and completion of the ATS self-test, the ATS MSD displays an amber FAIL message.


 AUTOMATIC FLIGHT CONTROL SYSTEM Description  Vol. 2  04.10.61 
Oct 05/06 

The computer’s satisfactory self-test function results in illumination of two green LEDs, located on the ATS panel, and an MSD scrolling SELFTEST message is indicated. This test ensures system integrity and logic to allow ATS engagement only if specific system requirements are satisfied. At the completion of the self-test, the green LED annunciators will extinguish, and both MSDs will blank. If the system detects a failure, the ATS FAIL message in the MSD is annunciated.


NOTE
The LED displays in the MSDs and the ATS control panel can be tested by selecting and holding the LAMP TEST switch in position 1 or 2. The ATS will also perform a system self-test and each MSD returns to a blank display upon release of the LAMP TEST switch.
If the ATS is powered up with the IND LTS on DIM, cycle the selector to BRT, then DIM, to establish intensity control after the SELFTEST function has passed.
ATS Ground Test Function
ATS ground testing is accomplished by:
.
Placing the throttles at the mid-travel position

.
Selecting the LAMP TEST switch to position 1 or 2, and within 15 seconds

.
Pressing and holding the ATS engage button.


The following events occur during the test:
.
SERVOTEST message is displayed on the MSD for 7 seconds, and the MSD will blank;

.
Throttle levers will retard to the FLIGHT IDLE position.


The ATS ground test that has been previously described is not represented on the illustration that follows, because it is considered a ground maintenance test function. The test is carried out to check the throttle levers to engine interface circuit.


 AUTOMATIC FLIGHT CONTROL SYSTEM Description  Vol. 2  04.10.62 
Oct 05/06 


ATS Computer Testing Figure 04.10.48
Autothrottle Mode of Operation
The flight guidance vertical mode is normally determined by the flight director or autopilot, and is influenced by the FMS during vertical navigation control. The autothrottle mode of operation results in autothrottle thrust control, which complements the pitch control being performed by the flight guidance system.
The following graphic outlines the integrated functional control provided by the autothrottle for the various control modes of the autopilot/flight director and FMS. The graphic represents specific phases of a typical flight, and an explanation of each phase is detailed within the next several pages.
 
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