Question

Which of the following is true with respect to flexure pivot accelerometers?

(a) Flexure must provide maximum resistance in the direction of input axis

(b) Flexure must provide maximum resistance in the direction other than input axis

(c) Torquer coil current measures the acceleration

(d) Unbalanced accelerometer type

I had been asked this question in a job interview.

I want to ask this question from Accelerometer topic in division Satellite Radio Navigation  & Inertial Navigation of Avionics

Answer 1

The correct choice is (a) Flexure must provide maximum resistance in the direction of input axis

Best explanation: The pivot or flexure supporting the pendulum must provide minimal restraint for the pendulum in the direction of the input axis while exhibiting high stiffness in the other two directions. The spring constant of the flexure or pivot generates a restoring force that reduces the gain of the electronic restoring loop.