Originally Posted by
ivor toolbox
Er, so it can work out your position.
To work out where you are, it does a mathematical calculation, based on your speed over the ground, and heading.
Ignoring ALL other factors , in simples terms your speed over the ground is going to be different if flying east to west or west to east, if flying at a constant air speed.
Ttfn
My question here was not how an IRS do alignment. My question was that why not an IRS just take all the position from the GPS rather than taking time sensing and calculating.