22-05. INERTIAL NAVIGATION AND REFRENCE SYSTEMS (INS and IRS)
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1. orth references. Aircraft can not be moved during the alignment process – it has to be fully stationary on the ground, so that only the accelerations due to the movement of the earth are sensed. After the alignment is completed the system compares the calculated Latitude (required for correct Earth rate compensation – we know that the Earth rate is dependent on the Latitude) with the information that has been manually entered by the pilots – again if significant error is found, system issues an alert message.
2. S switch in STBY position.
Note 2: as mentioned above, it is possible to initialize the INS/IRS system by moving the selector from OFF to the NAV position (skipping the ALIGN position) and manually entering the position coordinates. The INS/IRS system will perform the alignment phase and then automatically switch into the navigation mode.
3. The full alignment of the stable platform of an Inertial Navigation System:
4. Alignment of INS and IRS equipment can take place in which of the following modes?
5. Compared with a conventional gyro, a laser gyro:
