A ship designed to operate in any number of roles supporting ships and other operations, including a wide range of activities related to replenishment, transport, repair, harbor services, and research.


Related Terms

TRY VALVE

One of three valves mounted on a boiler or water column within the visible range of the gauge glass and used to check the water level.

PNEUMATIC ATOMIZER

An atomizer that uses compressed air to produce drops in the diameter range of 5100 micrometers.

PLATINUM RESISTANCE THERMOMETER

The basis of the International Practical Temperature Scale of 1968 from 259.35 to 630.74 C; used in industrial thermometers in the range 0 to 650 C; capable of high accuracy because platinum is noncorrosive, ductile, and nonvolatile, and can which the loads are placed.

PIGTAIL

A short, flexible wire, usually stranded or braided, used between a stationary terminal and a terminal having a limited range of motion, as in relay armatures.

PIECEWISE LINEAR SYSTEM

A system for which one can divide the range of values of input quantities into a finite number of intervals such that the output quantity is a linear function of the input quantity within each of these intervals.

OPDAR

A laser system for measuring elevation angle, azimuth angle, and slant range of a missile during its firing period. Derived from optical direction and ranging. Also known as optical radar.

NYQUIST'S THEOREM

The mean square noise voltage across a resistance in thermal equilibrium is four times the product of the resistance, Boltzmann's constant, the absolute temperature, and the frequency range within which the voltage is measured.

MEAN SPECIFIC HEAT

The average over a specified range of temperature of the specific heat of a substance.

MEADOW

Range of air-fuel ratio within which smooth combustion may be had.

LOW-TEMPERATURE SEPARATION

Liquid condensate recovery from wet gases at temperatures of 20 to 20 F ( 6.7 to 28.9 C), the temperature range at which the gas-oil separator operates.

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