Accession Number:

AD0281754

Title:

AN ANALYSIS OF BOW VIBRATION INDUCED BY ANTI-PITCHING FINS,

Descriptive Note:

Corporate Author:

MASSACHUSETTS INST OF TECH CAMBRIDGE

Report Date:

1962-05-01

Pagination or Media Count:

35.0

Abstract:

A study was made of the exciting force, the pick-up mechanism, and the elimination of resultant system vibrations associated with the operation of anti-pitching fins on ships. The anti-pitching fin, when moving down during a pitching cycle, causes a ventilated bubble to be formed on its upper surface. It is the subsequent collapse of this bubble which gives rise to a sudden pressure impulse and is the exciting force. The pickup mechanism is the models hull.

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE