Quick, simple, practical question.
I'm looking at ways to increase redundancy in the plane I'm building. I am considering the following:
- Dual APMs
- Mounted symmetrically away from the center of mass in one axis. (the lateral axis)
- Mounted in-line with the center of mass in the other two axes (the longitudinal and vertical)
I understand the issues of an IMU being mounted away from the CG (additional 'fictitious' accelerations due to the arm from the CG torquing the IMU).
Given two symmetrically opposed (about one of the CG's principal axes) IMUs, is it possible or practical to mix the data from them, and therefore achieve both: 1) redundancy and 2) less noisy data?
Practically speaking, I would like to place the two APMs in the engine nacelles of each of my twin engines. The communication & data sharing between the APMs would be a separate topic, so don't worry about that here.