Re: Inertial Navigation ???

From:         "Chuck" <>
Date:         15 May 2000 11:14:14 -0700
Organization: NASA Dryden
References:   1
Followups:    1
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>>  You are correct about IRS's
>> updating their position.  When an IRS can lock on to 2 vor's it will
>> triangulate its position and update itself.
>I have never seen the system you describe, but only UHF DME used to update
>the IRS.

What aircraft have IRS systems that compute themselves or receive
updated position data? The ones I am familar with the IRS position is
never updated once the system is put in NAV.

INS is another story. Those systems I am familar with do get updated
by the FMC.