Сборник технических текстов для домашнего чтения по английскому языку. Морозова М.А. - 56 стр.

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commands. Each of the three primary flight computers contains three different and
separately programmed 32 bit microprocessors, a Motorola, Intel and AMD, to man-
age the fly-by-wire functions.
The Boeing 777 was the first aircraft with an ARINC 629 digital data bus
linked to the main and standby navigation systems. The navigation system includes a
Honeywell ADIRS air data and inertial reference system with a six-ring laser gyro-
scope, a Honeywell terrain collision avoidance system (TCAS) and a Honeywell and
BAE Systems twelve-channel global positioning system. The aircraft is equipped
with a Honeywell all colour weather radar.
The aircraft can be fitted with a Honeywell and Racal satellite communications
system.
CONSTRUCTION
Boeing manufactures the flight deck and forward section of the cabin, the
wing, tail and the engine nacelles. Boeing subcontracts the manufacture of compo-
nents and systems, which are transported to Boeing for final assembly and tests. Sub-
contractors include Alenia in Italy, ASTA in Australia, BAE Systems in UK, Bom-
bardier Shorts in UK, Embraer in Brazil, Japanese aerospace companies, Kaman in
USA, Korean Air, Northrop Grumman in USA and Singapore Aerospace.
ENGINES
The aircraft has two pod-mounted turbofan engines below the leading edges of
the wings. The General Electric, Pratt & Whitney and Rolls Royce Trent engines are
rated at 327 to 436kN thrust.
The main fuel tanks are installed in the wing torsion box with the reserve and
surge tanks on the inboard side of the wing. The fuel capacity of the 777-200 is
117,350l. Smiths Industries supplied the ultrasonic fuel quantity gauge system.
A centre section tank installed in the 777-200ER and the 777-300 increases the
fuel capacity to 171,175l. The ultra-long range aircraft, Boeing 777-200LR has addi-
tional fuel tanks in the rear cargo hold to bring the total fuel capacity to 195,285l.
LANDING GEAR
The aircraft has retractable tricycle type landing gear. Measco and Messieur
Bugatti developed the main landing gear under a joint agreement, which features six-
wheeled bogies. Control of the steering rear axles is automatically linked to the steer-
ing angle of the nose gear. The main landing gear is fitted with Honeywell Carbenix
4000 brakes. Initial activation of the brakes during taxiing applies the brakes to alter-
nate groups of three wheels only in order to minimise wear on the brakes. The nose
gear is twin-wheeled and is steerable
BOEING BUSINESS JET (BBJ) LONG RANGE BUSINESS JET, USA
The Boeing Business Jet or BBJ is a member of the 737 family of airliners, one of
the most successful and reliable jet aircraft in the world. The BBJ engineering and
operations are based on the safety and reliability of the 737 aircraft, which logs more
than 14,000 take-offs every day, i.e. one take-off every six seconds, and has com-
pleted over 100 million flight hours. The delivery of the first Boeing Business Jet
BBJ was in October 1998. More than 98 (83 BBJ and 15 BBJ2) have been ordered

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