Accession Number:

ADA295340

Title:

A Postswirl Propulsor for a Small Vehicle.

Descriptive Note:

Final rept. Jun-Oct 90,

Corporate Author:

NAVAL SURFACE WARFARE CENTER CARDEROCK DIV BETHESDA MD

Personal Author(s):

• Chen, Benjamin Y-H.
• Tseng, Carol L.

Report Date:

1995-04-01

Pagination or Media Count:

30.0

Abstract:

A novel postswirl PS propulsor designed for a small vehicle is addressed. The major benefit of this design is the simplicity of the machinery arrangement. The challenge of this design is the low value of Reynolds number which may cause flow separation on the propulsor blade surfaces. Open-water and self-propulsion experimental results show that the performance predictions agree well with the measurements. AN

Descriptors:

• *PROPULSION SYSTEMS
• *MARINE SURFACE PROPULSION
• *SWIRLER VANES
• TEST AND EVALUATION
• LOADS(FORCES)
• HULLS(MARINE)
• TURBULENT FLOW
• VORTICES
• WAKE
• DESIGN CRITERIA
• FLOW SEPARATION
• LAMINAR FLOW
• CIRCULATION
• PRESSURE DISTRIBUTION
• REYNOLDS NUMBER
• MARINE PROPELLERS
• TORQUE
• OPEN WATER
• PROPELLER BLADES
• SELF PROPELLED
• PROPELLER NOISE

Subject Categories:

• Marine Engineering

Distribution Statement:

APPROVED FOR PUBLIC RELEASE