> Suspended mass inside container fixed to plane structure, measure angle of mass relative to container? Unfortunately not! This measures acceleration of the a

> Suspended mass inside container fixed to plane structure, measure angle of mass relative to container? Unfortunately not! This measures acceleration of the airframe, not gravity. Was a huge challenge in the early days of flight, and there’s a great history online that I can’t find right now. Anyway, this might be useful reading: https://en.wikipedia.org/wiki/Attitude_indicator https://en.wikipedia.org/wiki/Attitude_indicator > That doesn't sound desirable though, is it? Given that wing-angle-to-airflow is what matters when it comes to stalls, I’d say it’s eminently desirable?