PROPELLER STRESS TRIALS ON USS FRANKLIN (CVA-42).

Abstract

The Naval Ship Research and Development Center conducted underway propeller-stress measurements on USS FRANKLIN D. ROOSEVELT (CVA-42) to help evaluate present methods of estimating blade loads and stresses. Strain gages were applied to the starboard outboard propeller and were protected with neoprene patches. Cables passed through the bore of the shaft to telemetering equipment and recorders in the shaft alley. Stresses were measured at various speeds on a straight course and during turns. The major component of alternating stress was at shaft frequency and amounted to about plus or minus 40 percent of the mean stress. The combined mean and alternating stresses were high enough to cause fatigue over an extended period. The success of this trial indicates that underway propeller-stress measurements are feasible; they could be used as a valuable tool in propeller design. (Author)

Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1968
Accession Number
AD0834989

Entities

People

  • David W Taylor
  • Gary P. Antonides

Tags

DTIC Thesaurus Topics

  • Communication Equipment
  • Frequency
  • Gages
  • Measurement
  • Measuring Instruments
  • Neoprene
  • Outboard
  • Propellers
  • Recording Systems
  • Strain Gages
  • Telemetry Equipment

Readers

  • Aerospace Test and Evaluation
  • Marine Hydrodynamics
  • Mechanical Engineering/Mechanics of Materials.