on power up, the IRS obtains position
- latitude from previous position
- longitude from previous position
- latitude and longitude from previous position
Explanation from PART66Online
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.
S
sasna asked · 22 Aug 2013
both long. and lat ????
Community Comments (5)
P
PART66Online
24 Aug 2013
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.
P
PART66Online
1 Sep 2013
Changed back in accordance with part66online.com/index.php?mod=view_q...
K
kanarele360
6 Nov 2017
In your reference correct answer is latitude, in this one longitude. Or I don't get something?
J
Jordi
9 Apr 2021
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
9 Apr 2021
i meant to say IRS obtains position from the longitude . the further part till the whereas is wrong.
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