EFFECT OF SWEEP ANGLE AND DRAG ON THE FLUTTER SPEED OF HYDROFOILS

A determination is made of the effect on flutter frequency and speed on variations in the drag coefficient and sweep angle. The strip method of analysis is used with wing stiffness being estimated through strength of material analyses. The drag and lift slope coefficient are estimated to compare with experimental data obtained by T.T. Huang. These estimates obtain results which are shown to provide more favorable comparisons with various experiments conducted by him than could be obtained heretofore. Although comparisons obtained are considered favorable, trends in the data for increasing slope angles are not completely satisfactory which indicates that a further refinement in the theory is still required. Discussion of the possible source for these trends and the limits of applicability of this approach are considered.

• Corporate Authors:

  American Institute of Aeronautics and Astronautics

  1290 Avenue of the Americas
  New York, NY  United States  10019
• Authors:
  • Mahig, J
• Publication Date: 1973-7

Media Info

• Features: References;
• Pagination: p. 104-111
• Serial:
  • Journal of Hydronautics
  • Volume: 7
  • Issue Number: 3
  • Publisher: American Institute of Aeronautics and Astronautics

Subject/Index Terms

• TRT Terms: Aerodynamic lift; Bending; Flutter; Flutter (Aeronautics); Hydrofoils; Stiffness
• Old TRIS Terms: Bending stiffness; Lifting surface theory
• Subject Areas: Design; Marine Transportation;

Filing Info

• Accession Number: 00046680
• Record Type: Publication
• Source Agency: American Institute of Aeronautics and Astronautics
• Files: TRIS
• Created Date: Sep 18 1973 12:00AM