Accession Number : AD0642746

Title :   HYDROFOIL FLUTTER PHENOMENON AND AIRFOIL FLUTTER THEORY. VOLUME IV. FINITE ASPECT RATIO,

Corporate Author : STEVENS INST OF TECH HOBOKEN N J DAVIDSON LAB

Personal Author(s) : Henry,Charles J. ; Ali,M. Raihan

Report Date : OCT 1966

Pagination or Media Count : 52

Abstract : Measured decay rates and flutter speeds for two-degree-of-freedom hydrofoil models with finite aspect ratio are compared with those predicted by two-dimensional airfoil theory applied in a stripwise manner. The flutter speed of one of the experimental configurations is also predicted by means of three-dimensional lifting-surface theory. Both theory and experiment indicate that flutter speed increases as aspect ratio is decreased. However, the non-conservative discrepancy found previously between measured and predicted two-degree-of-freedom flutter speeds in two-dimensional flow persists in these three-dimensional results. (Author)

Descriptors :   (*HYDROFOILS, FLUTTER), (*AIRFOILS, FLUTTER), THEORY, ASPECT RATIO, VELOCITY, TWO DIMENSIONAL FLOW, THREE DIMENSIONAL FLOW, AEROELASTICITY

Subject Categories : Marine Engineering
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE