Accession Number : ADA266275


Title :   A Rapid Computational Model for Estimating the Performance of Compliant Airfoils in Cascades


Descriptive Note : Technical rept. Jan-Jun 1992


Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CA


Personal Author(s) : Sisto, F ; Avila, M


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a266275.pdf


Report Date : 01 Jul 1992


Pagination or Media Count : 34


Abstract : We consider the problem of designing the blades in a turbomachine to have a specific schedule of structural stiffness in order to achieve more favorable aerothermodynamic performance characteristics than is possible with rigid blades. This problem of 'aerothermodynamic tailoring' is extremely complex because of the need to couple the flow computation over a deformable surface with the structural dynamics computation. In this report an analysis is presented which accomplishes this objective by means of a two-dimensional incompressible potential flow model using vortex sheet representation of the blades. Details of the analysis and of the resulting computer program together with representative results are described


Descriptors :   *AEROELASTICITY , *AEROTHERMODYNAMICS , *ROTOR BLADES(TURBOMACHINERY) , COMPUTER PROGRAMS , STIFFNESS , CASCADE STRUCTURES , AERODYNAMIC LOADING , VORTICES , AIRFOILS


Subject Categories : Aerodynamics
      Aircraft


Distribution Statement : APPROVED FOR PUBLIC RELEASE