Correction Technique for Gravity Sensing Inclinometers. Phase 1. TheoreticalAnalysis

摘要

The report proposes and theoretically analyses a remarkably simple technique forcompensating the output of a gravity sensing inclinometer used in windtunnel models for errors due to centrifugal accelerations. The latter are caused by various and combined vibrational modes of the model-balance-sting-support combination which are excited during wind-on conditions. The resulting errors can exceed the required accuracy of incidence measurement of .01 deg by one or two orders of magnitude. The proposed compensation is simple and straightforward, requires a minimum of model instrumentation and can be applied in real-time.