Accession Number:

ADA065102

Title:

Performance of a TAP-2 Hydrofoil.

Descriptive Note:

Departmental rept.,

Corporate Author:

DAVID W TAYLOR NAVAL SHIP RESEARCH AND DEVELOPMENT CENTER BETHESDA MD SHIP PERFORMANCE DEPT

Personal Author(s):

• Lafrance,Pierre

Report Date:

1978-06-01

Pagination or Media Count:

102.0

Abstract:

This report discusses the measured performance of the TAP-2 hydrofoil, a mixed foil designed to operate fully wetted at takeoff 35 knots and which, through a change in geometry, can fly fully ventilated at cruise speed 60 knots. At takeoff, TAP-2 has a lift-to-drag ratio of 13 at the design lift coefficient the corresponding figure for cruise speed is between 7 and 8. Predictive extrapolation to prototype scale is discussed and contrasted with our present understanding of the scaling laws associated with ventilation. Author

Descriptors:

• *PERFORMANCE TESTS
• *HYDRODYNAMICS
• *HYDROFOILS
• EXPERIMENTAL DATA
• NAVAL VESSELS
• VENTILATION
• TEST FACILITIES
• SMALL SHIPS
• STRUTS
• WATER TUNNELS
• LIFT TO DRAG RATIO
• CAVITATION
• HYDROSTATIC PRESSURE

Subject Categories:

• Marine Engineering
• Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE