Development of a Pneumatic High-Angle-of-Attack Flush Airdata Sensing (Hi-Fads)System

摘要

A nonintrusive high-angle-of-attack flush airdata sensing system was installedand flight tested in the F-18 High Alpha Research Vehicle. This system consists of a matrix of 25 pressure orifices arranged in concentric circles on the nose of the vehicle to determine angles of attack and sideslip, Mach number, and pressure altitude. During the course of the flight tests, it was determined that satisfactory results could be achieved using a subset of just nine ports.