Accession Number:

AD0702726

Title:

STATIC STRESS MEASUREMENTS ON A HIGHLY-SKEWED PROPELLER BLADE.

Descriptive Note:

Final rept.,

Corporate Author:

NAVAL SHIP RESEARCH AND DEVELOPMENT CENTER WASHINGTON D C

Personal Author(s):

Report Date:

1969-12-01

Pagination or Media Count:

15.0

Abstract:

Static stresses were measured in a highly skewed marine propeller blade using a specially constructed pressure chamber which allowed the blade to be loaded under air pressure. The measured stress distribution was radically different from those previously measured on unskewed blades. The highest stresses occurred in a relatively narrow band extending from near the trailing edge at the blade root to near the leading edge at 90-percent radius. For a uniform pressure loading of 1.0 psi, the maximum measured principal stress was 2200 psi in compression and 1800 psi in tension. The maximum radial stress calculated by beam theory for the equivalent unskewed propeller was 910 psi both in tension and compression. Author

Subject Categories:

  • Marine Engineering
  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE