Patent Number: 6,253,166

Title: Stable algorithm for estimating airdata from flush surface pressure measurements

Abstract: An airdata estimation and evaluation system and method, including a stable algorithm for estimating airdata from nonintrusive surface pressure measurements. The airdata estimation and evaluation system is preferably implemented in a flush airdata sensing (FADS) system. The system and method of the present invention take a flow model equation and transform it into a triples formulation equation. The triples formulation equation eliminates the pressure related states from the flow model equation by strategically taking the differences of three surface pressures, known as triples. This triples formulation equation is then used to accurately estimate and compute vital airdata from nonintrusive surface pressure measurements.

Inventors: Whitmore; Stephen A. (Lake Hughes, CA), Cobleigh; Brent R. (Palmdale, CA), Haering, Jr.; Edward A. (Lancaster, CA)

Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration

International Classification: G01P 13/02 (20060101); G06F 017/11 (); G06F 019/00 ()

Expiration Date: 06/26/2018