Experimental Data for Tandem Cascade in the High Subsonic Region

Abstract

The work is the first part of studies on the use of the tandem cascade concept for application in the field of high turning angles. Two 1.64:1 scale models of a tandem cascade stator - the second model was a slightly changed version of the original design - were tested in a cascade wind tunnel for free stream Mach numbers of M = .5 to .9 and incidence angles of I = -4 deg. to +8 deg. Pressure measurements upstream; downstream and on the blade surfaces as well as schlieren pictures were taken. Application of back pressure was found to be necessary in order to get highest efficiencies and static pressure ratio. Side wall flaring or suction of the boundary layer at the side walls seem to be advisable for further testing.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1966
Accession Number
AD0666394

Entities

People

  • C. Sieverding

Organizations

  • von Kármán Institute for Fluid Dynamics

Tags

Communities of Interest

  • Air Platforms
  • Space

DTIC Thesaurus Topics

  • Back Pressure
  • Barometric Pressure
  • Boundary Layer
  • Compressors
  • Deceleration
  • Flow
  • Fluid Dynamics
  • Free Stream
  • Leading Edges
  • Mach Number
  • Pressure Distribution
  • Pressure Gradients
  • Pressure Measurement
  • Static Pressure
  • Test Facilities
  • Trailing Edges
  • Wind Tunnels

Fields of Study

  • Physics

Readers

  • Aerodynamics.
  • Fluid Dynamics.