Compensating for pneumatic distortion in pressure sensing devicesA general numerical technique for obtaining unsteady pressure measurements using conventional pressure sensing technology has been developed. A pneumatic distortion model, based on the Navier-Stokes equations of momentum and continuity, was reduced to a low-order, state-variable model retaining most of the dynamic characteristics of the full model. The reduced-order model is coupled with results from minimum variance estimation theory to develop an algorithm to compensate the effects of pneumatic distortion. Both postflight and real-time algorithms were developed and evaluated using simulated and flight data.
Document ID
19900032901
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Whitmore, Stephen A. (NASA Flight Research Center Edwards, CA, United States)
Leondes, Cornelius T. (California, University Los Angeles, United States)