Gen Navigation feedback question?
Has anyone seen this question in their feedback literature and more importantly know how to do it?
An INS/IRS has an azimuth gyro drift of 0.01 deg/hour. After a 12 hour flight at 500 kts groundspeed, what is the accumulated position error due to the drift rate?
a)60nm
b)6nm
c)12nm
d)2nm
The answer in the feedback is given as b)6nm
but having discussed this with someone else we feel that to do the question you need to be given the lat which we don't have!
Any bright ideas much appreciated!
Thanks.