Accession Number : AD0862090

Title :   Notes on Measuring Nonstationary Pressures Behind the Rotor,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OH

Personal Author(s) : Zabicki, Andrzej

Report Date : 26 MAR 1969

Pagination or Media Count : 9

Abstract : The actual flow in the part behind the working stage in a rotor machine is characterized by velocity vectors and impeded stream parameters which change in time. A hot-wire resistance anemometer is used to determine the instantaneous parameters of the velocity. Ascertainment of the direction by the same method is rendered difficult by the flat directional characteristics of the filament and determination of the inhibiting parameters is in general impossible. A technique for measuring small differences in rapidly changing pressures is discussed for studying flow in the outlet throat. The author makes comments on the modes of operation of aerodynamic probe systems, pressure signal to electric signal transformation, dynamic calibration, and measurement of flow angles.

Descriptors :   (*ROTOR BLADES(TURBOMACHINERY), PRESSURE), (*FLOW FIELDS, TEST EQUIPMENT), ROTARY COMPRESSORS, PRESSURE, MEASUREMENT, ANEMOMETERS, CALIBRATION, SIGNALS, POLAND.

Subject Categories : Hydraulic and Pneumatic Equipment
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE