Stabilizing fins for underwater coring tools
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Authors
Honhart, David Crosby
Subjects
stabilizing fins for underwater coring tools
fin assemblies for underwater coring tools
coring tool fin assemblies
fin assemblies for underwater coring tools
coring tool fin assemblies
Advisors
Smith, R.J.
Date of Issue
1968-12
Date
December 1968
Publisher
Monterey, California. Naval Postgraduate School
Language
en_US
Abstract
It Is essential that the force vector of the weight of a coring tool
act along a line that is parallel to the longitudinal axis of the core
barrel. Such an alignment enables corers to obtain deeper, less disturbed
core samples. The probability of bending the core barrel is furthermore
greatly reduced. A fin assembly that provides the maximum righting moment
for one shape of coring tool does not necessarily provide the maximum
moment for a different shape. The optimum fin design is determined by
testing. A fin assembly for a particular coring tool has been devised
which reduces the probability of the force vector not acting parallel to
the longitudinal axis. The optimum design is a vane-shroud fin assembly.
The shape of the shroud is conical. Slotting the shroud by removing
longitudinal strips improves the righting capability at higher angles of
deviation, but is slightly inferior to the full shroud at lesser angles.
Type
Thesis
Description
Series/Report No
Department
Oceanography
Organization
Naval Postgraduate School (U.S.)
Identifiers
NPS Report Number
Sponsors
Funding
Format
Citation
Distribution Statement
Approved for public release; distribution is unlimited.
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.