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Old 29th Nov 2012, 16:12
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glum
 
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Interestingly in all the replies, nobody actually defined the acronyms:

AHRS - Attitude Heading Reference System

It gives you the attitude and heading of your aircraft, and nothing more.

IRS - Integrated Reference System

It gives you the attitude and heading of your aircraft, plus navigation information: integrating the reference systems.

Various manufacturers interpret these in their own ways, adding options and using different systems to provide the information as they see fit.

Anything with a compass and horizon ball has an AHRS, even a DC3:


Last edited by glum; 29th Nov 2012 at 16:17.
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