What does the Initial Reference Systems do on aircraft like airbus. Please help!?

Question

I've been searching on Google and I still cannot find the answer.

So I decided to ask on Yahoo

Answer 1

An inertial reference system is a navigation aid that uses a computer and motion sensors to continuously track the position, orientation, and velocity (direction and speed of movement) of a vehicle without the need for external references

Answer 2

Most modern inertial systems use ring laser gyros to provide pitch, roll and position of the aircraft. They may also be tied into a navigation system like the FMS800, which takes those inputs along with several others, i.e. barometric altitude, doppler & GPS to create a finer navigation solution.

Answer 3

Try Googling "inertial" system.

Hope this helps

Answer 4

I personally have never seen it as the primary navigation method, but like someone else stated, it uses a set of gyros to determine your acceleration, turning, etc...  As long as it has your starting point, it can roughly tell your current position.  It is used by many aircraft as a backup to primary navigation systems like NAVAIDS and GPS.

I believe on the Airbus ( I used to dispactch A319s but its been a few years) the IRS (Inertial Reference System) can sync with the other forms of navigation periodically throuhout the flight to re-update current location.

Hope this helps...

Answer 5

Inertial guidance: The aeroplane knows where it is because it knows where it isn't. By subtracting where it is from where it isn't, or where it isn't  from where it is, it obtains a difference or deviation. The guidance system uses this deviation to guide the aircraft from where it is to a position where it isn't, but to where it will be in a few minutes time. LOL.