CHARACTERSITICS OF A WEDGE WITH VARIOUS HOLDER CONFIGURATIONS FOR STATIC-PRESSURE MEASUREMENTS IN SUBSONIC GAS STREAMS

摘要

The characteristics of a wedge static-pressure sensing element •with various holder configurations were determined and compared with the characteristics of the conventional probe.nThe probes were tested over a range of Mach number from 0.3 to 0.95, a range of pitch angle from 10° to -10°, and a range of yaw angle from 15° to -15°. In order to show that moisture had no effect on the results, runs were made at dew points of 45° and -45° F at ambient pressure. Runs were also made at constant Mach numbers over a range of total pressures from 20 to 60 inches of mercury absolute.nThe wedge probe is particularly useful in applications where space prevents use of the conventional probe. The wedge-type probe also finds application where the flow direction is unknown or varies greatly.