Accession Number : ADA298728

Title :   Method of Designing Cascade Blades with Prescribed Velocity Distributions in Compressible Potential Flows,

Corporate Author : NATIONAL AERONAUTICS AND SPACE ADMINISTRATION WASHINGTON DC

Personal Author(s) : Costello, George R.

PDF Url : ADA298728

Report Date : 1950

Pagination or Media Count : 17

Abstract : By use of the assumption that the pressure-column relation is linear, a solution to the problem of designing a cascade for a given turning and with a prescribed velocity distribution along the blade in a potential flow of a compressible perfect fluid was obtained by the method of correspondence between potential flows of compressible and incompressible fluids. The designing of an isolated airfoil with a prescribed velocity distribution along the airfoil is considered as a special case of the cascade. If the prescribed velocity distribution is not theoretically attainable, the method provides a means of modifying the distribution so as to obtain a physically significant blade shape. Numerical examples are included.

Descriptors :   *BLADES, *COMPRESSIBLE FLOW, *POTENTIAL FLOW, *CASCADE STRUCTURES, VELOCITY, DISTRIBUTION, TRAILING EDGES, BLADE AIRFOILS.

Subject Categories : Aircraft
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE