Question

What can be done to reduce to avoid poor acceleration error averaging?

(a) Use higher order leveling loop

(b) Use lowest order leveling loop

(c) Use switch gravity sensors

(d) Use differential leveling loop

The question was posed to me in final exam.

This interesting question is from Vertical & Heading References topic in section Air Data Systems, Altitude and Heading Reference of Avionics

Answer 1

The correct answer is (a) Use higher order leveling loop

The explanation: The stand off error depends upon the gravity sensors switch’s dead and gives poor acceleration errors. Significant improvement can be obtained in the averaging vertical reference by using a high order leveling loop.