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Title: Laser Measurement Of Trident D5 Launch Tubes
Author: Henry Meinders
Source: 2004 Measurement Science Conference
Year Published: 2004
Abstract: In January of 2000, Naval Surface Warfare Center (NSWC) Corona Division conducted laser measurements of six D5 launch tubes on board the USS Tennessee. There were two purposes in conducting these measurements: 1) To quantify any out of tolerance conditions on the launch tubes due to their service life, and 2) To prove the capability of a new measurement system for more accurate and timely data gathering. This paper presents some of the technical challenges overcome in developing the laser measurement system and performing the measurements at the Strategic Weapons Facility Atlantic (SWFLANT) dry dock facility. In developing the measurement system we faced several problems including correctly positioning the laser, maintaining line of sight from the laser, and restrictions from permanently modifying the platform used to gain access to the tube. During actual measurement we encountered environmental challenges, vibration influences, scheduling conflicts, varying tube surface conditions, and data reduction difficulties. The measurements were successfully performed, and the condition of the tubes was successfully evaluated. The ability of the laser tracker measurement system to accurately and efficiently gather dimensional data on the loading tubes was proven.

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