Accession Number : ADD011940

Title :   Analog Inclination Data System.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Wolfe,L E ; Howard,R K

Report Date : 30 Jul 1985

Pagination or Media Count : 4

Abstract : This invention relates to a means for taking roller path inclination data as part of a weapons alignment sequence. And more particularly to a servo-accelerometer sensor and signal conditioning circuitry capable of detecting very small angular displacements. In order for a ship at sea to launch weaponry with the desired accuracy, part of the weapons system alignment sequence requires taking roller path inclination data so that all elements of the system will be referenced to the same reference plane. Ships at sea, however, are subject to pitch and roll; which motions affect the angular position of the ship with respect to the true vertical. Since the alignment of the weapon systems is done at night which is the time that ship and temperature conditions are the most stable, the human error factor is large. Eye fatigue from marking a small bubble in a vial is a great cause of error. Also mental arithmetric suffers in the early morning hours, and many recording errors or calculations have caused reversed plots of data or wrong entries. Bubble devices are an acceptable means of taking roller path inclination data if the allowable element tolerance is within the accuracy of the bubble device.

Descriptors :   *PATENTS, *TILT, NAVAL VESSELS, GUIDED MISSILE LAUNCHERS, SUPPORTS, ALIGNMENT, MEASURING INSTRUMENTS, ACCELEROMETERS, VOLTAGE AMPLIFIERS, ANALOG SYSTEMS

Subject Categories : Marine Engineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE