on power up, the IRS obtains position
- latitude and longitude from previous position
- longitude from previous position
- latitude from previous position
Explanation
On power-up the inertial reference system can recover latitude from its last stored position because latitude is needed for the gyrocompass alignment that levels and aligns the platform. Longitude, however, must normally be entered by the crew, so only the latitude is taken from the previous position.
sasna asking:
both long. and lat ????
Community Comments (5)
D
dimky Posts: 514 24.08.2013 / 15:02
Hey!
Looks like there is mistake. Both longitude and latitude in my opinion is logically. I'll correct that.
Looks like there is mistake. Both longitude and latitude in my opinion is logically. I'll correct that.
D
dimky Posts: 514 01.09.2013 / 10:32
Changed back in accordance with http://part66online.com/index.php?mod=view_qa&id=465
K
kanarele360 Posts: 2 06.11.2017 / 15:54
In your reference correct answer is latitude, in this one longitude. Or I don't get something?
J
Jordi Posts: 198 09.04.2021 / 11:36
the IRS obtains position from the longitude of the INS whereas,the INS obtains the position from the latitude of the previous position,so be carefoul for this 'trap' in examinations.
J
Jordi Posts: 198 09.04.2021 / 11:37
i meant to say IRS obtains position from the longitude . the further part till the whereas is wrong.
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