1. What's the Russian for:

acceleration, computer, force, datum, star tracker, memory bank, inertial navigation, celestial body, sensitive, device, to install, store, calculation, to detect.

2. Translate into English:

Корабельная инерциальная навигационная система / или сокращенно КИНС / устанавливается на некоторых надводных кораблях и на подводных лодках. Она может состоять из нескольких гироскопов, одного или нескольких компьютеров и акселерометра. С ее помощью штурман может точно определить местоположение корабля в море.

3. Translate into Russian:

1. We have read about a new system which is called Ships' Inertial Navigation

System.

2. This system senses the acceleration ( changes of course and speed ) which the

ship undergoes.

3. The star tracker is a sensitive device that calculates elevation and azimuth data

of celestial bodies.

4) Because SINS uses inertial forces, it is sometimes called an inertial navigator.

5. The star tracker may be effectively used in any weather with a high degree of

accuracy, since it can detect radio emanations of celestial bodies.

4. March words:

Star Tracker	—	a system that provides the ship with an accurate and continuous position.
SINS	—	a memory bank of highly accurate navigational date.
NAVDAC	—	extremely sensitive device with radio or infra-red components.

5. Texts for additional reading:

1) Ships' Inertial Navigation System

A British inertial navigation system will be installed in some of Royal warships. It will enable them to plot their positions without, external means. It is especially important for submarines which may remain submerged for many months. The SINS will be fitted in all nuclear submarines.

The British equipment includes three gyroscopes, a small computer and an accelerometer.

SINS was installed in the aircraft carrier «Eagle». Other surface ships which will be equipped with it, will be «County» class guided missile destroyers.

Inertial navigation equipment was used by American nuclear submarines in voyages under the Polar ice,

2) NAVDAC

The term NAVDAC is also used to mean Navigational Data Assimilation Centre.

It is a very sophisticated device to pinpoint the ship's position at sea. There are three SINS computers. One gets their readings, plus data from the radio direction finders the star trackers and a radio telescope.

Note: Navigational Data Assimilation Centre — центр сбора и обработки навигационных данных.

Lesson 3. Radar

1. Read the following words:

direction echo supply

location fluorescent synchronizer

screen predetermined three-dimentional

frequency radiate view

appearance regardless visual

2. Grammar. Сложноподчиненные предложения; определительный комплекс.

1) The computer generates the message which goes to both injection facilities.

2) Omega complements leading navigational system, Loran, which covers parts of the northern hemisphere.