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The Boeing 757-200, member of the popular 757/767 family of medium-sized
airplanes, is a twin-engined, medium-to-long-range jetliner incorporating
advanced technology for exceptional fuel efficiency, low noise levels,
increased passenger comfort and top operating performance. The 757
offers other virtues as well, including great versatility by reducing
airport congestion. It can fly both long- and short-range routes and
its broad use effectively lends itself to "hub-and-spoke" planning.
Designed to carry 200 passengers in a typical mixed-class configuration,
the 757-200 can accommodate up to 228 passengers in charter service,
putting its capacity between that of the Boeing 737-400 or -700 and
the 757-300.
The 757-200 takeoff weights range from 220,000 pounds (99,800 kg) up
to a maximum of 255,000 pounds (115,660 kg) for greater payload or range.
A freighter configuration of the 757-200 is also available.
The 757-200 and dual-aisle 767 were developed concurrently, so both
share the same technological advancements in propulsion, aerodynamics,
avionics and materials. This commonality reduces training and spares
requirements when both are operated in the same fleet. Because of these
features, many airline operators will operate both 757 and 767 airplanes.
Technical Features
High-bypass-ratio engines combined with the wing design help make the
757 one of the quietest, most fuel-efficient jetliners in the world.
The engines have large diameter fans that move more air outside and
around the hot core, boosting efficiency while reducing noise. Noise
containment is further aided by acoustic linings in the engine nacelles.
Engines are available from Pratt & Whitney or Rolls-Royce in thrust
ratings from 36,600 pounds of thrust (162.8 kilonewtons) to 43,500 pounds
of thrust (193.8 kilonewtons). When compared to any single-aisle jetliner
in service today, the 757 is unsurpassed in fuel-efficiency. It consumes
up to 43 percent less fuel per seat than older trijets.
The 757's wing is less swept and is thicker through the center than
earlier aircraft, permitting a longer span. Its lower surface is slightly
flatter, and the leading edge somewhat sharper. Taken together, these
changes improve lift and reduce drag for greater aerodynamic efficiency
and lower fuel consumption.
With the improved wing design, less engine power is required for takeoff
and landing. Even with full passenger payload, the 757-200 can operate
from runways as short as those used by the much smaller 737-200 jetliner
-- about 5,500 feet (1,675 m) for trips up to 2,000 statute miles (3,220
kilometers). In addition, the 757 can reach a higher cruise altitude
more quickly than many other jetliners.
These improvements reduce community noise of the already quiet powerplants
on the 757-200. In fact, noise levels are significantly lower than the
requirements set forth in U. S. Federal Aviation Regulation Part 36,
Stage 3, as well as ICAO (International Civil Aviation Organization)
Annex 16 Chapter 3.
Lightweight materials contribute to the overall efficiency of the 757
models. Improved aluminum alloys, primarily in the wing skins, save
610 pounds (276 kg). Advanced composites such as graphite/epoxy are
used in control surfaces (including rudder, elevators and ailerons),
aerodynamic fairings, engine cowlings and landing gear doors for a weight
savings of 1,100 pounds (500 kg). Another 650 pounds (295 kg) of weight
savings is attributable to carbon brakes, which have the added advantage
of longer service life than conventional steel brakes.
Flight Deck
The 757-200 flight deck, designed for two-crewmember operation, pioneered
the use of digital electronics and advanced displays. Those offer increased
reliability and advanced features compared to older electro-mechanical
instruments.
A fully integrated flight management computer system (FMCS) provides
for automatic guidance and control of the 757-200 from immediately after
takeoff to final approach and landing. Linking together digital processors
controlling navigation, guidance and engine thrust, the flight management
system ensures that the aircraft flies the most efficient route and
flight profile for reduced fuel consumption, flight time and crew workload.
The precision of global positioning satellite system (GPS) navigation,
automated air traffic control functions, and advanced guidance and communications
features are now available as part of the new Future Air Navigation
System (FANS) flight management computer.
The captain and the first officer each have a pair of electronic displays
for primary flight instrumentation. The electronic attitude director
indicator displays airplane attitude and autopilot guidance cues. The
electronic horizontal situation indicator displays a video map of navigation
aids, airports and the planned airplane route and it can display a weather-radar
image over these ground features.
The engine indicating and crew alerting system, often called EICAS,
monitors and displays engine performance and airplane system status
before takeoff. It also provides caution and warning alerts to the flight
crew if necessary. EICAS monitoring also aids ground crews by providing
maintenance information.
The 757-200 is available with a wind shear detection system that alerts
flight crews and provides flight-path guidance to cope with it. Wind
shear, caused by a violent downburst of air that changes speed and direction
as it strikes the ground, can interfere with a normal takeoff and landing.
Flight decks of the 757 and 767 are nearly identical and both aircraft
have a common type-rating. Pilots qualified to fly one of the aircraft
can fly any of the seven 757/767 family members with only minimal additional
familiarization.
Built-in test equipment helps ground crews troubleshoot avionics and
airplane systems quickly for easier maintenance than on earlier aircraft.
Structural maintenance needs are reduced, owing to new methods of corrosion
protection including application of special sealants and enameling of
major portions of the fuselage.
Interior Features
The interior of the 757-200 passenger cabin has been redesigned. The
interior is the same as that developed for the Next-Generation 737
family. The 737 interior was revised based on the recommendations
of airline customers. The new interior is designed to upgrade the
overall look and aesthetics of the passenger cabin.
The new overhead stow bins and the new sculptured ceiling have smoother
curves, giving the cabin a more open, spacious feeling. A handrail
that extends along the bottom of the stow bins as well as a moveable
cabin class divider also are available.
The 757-200 also is equipped with vacuum lavatories. For airlines,
that means reduced service time.
Range Capability
The demonstrated reliability of the 757 has approval for extended-range
twin (engine) operation, or ETOPS. In July 1990, the Federal Aviation
Administration granted 180-minute ETOPS certification for 757-200s
equipped with both the Rolls-Royce RB211-535E4 and RB211-535C engines.
Previously, the FAA had certified the 757-200 equipped with RB211-535E4
engines for 120-minute operation in 1986. In April 1992, the FAA granted
180-minute ETOPS certification for the 757-200 equipped with Pratt
& Whitney PW2000-series engines. This followed the FAA's previous
certification of Pratt & Whitney PW2000-powered 757-200s for 120-minute
operation in April 1990.
For added reliability on ETOPS flights, the 757 is available with
extended range features, including a backup hydraulic-motor generator
and an auxiliary fan to cool equipment in the electronics bay. High-gross-weight
versions of the aircraft can fly 3,900 nautical miles (7,222 km) nonstop
with full passenger payload. These system attributes contribute to
the 757's versatility, allowing it to serve more markets.
History
The first 757-200 rolled out of the Boeing Renton, Washington, plant
on Jan. 13, 1982, and made its first flight Feb. 19, 1982. The FAA certified
the aircraft on Dec. 21, 1982, after 1,380 hours of flight testing over
a 10-month period. The first 757-300 rolled out in 1998.
First delivery of a 757-200 took place Dec. 22, 1982, to launch customer
Eastern Airlines. Eastern placed the aircraft into service Jan. 1, 1983.
On Jan. 14, 1983, the British Civil Aviation Authority certified the
757-200 to fly in the United Kingdom. British Airways, another launch
customer for the 757-200, is now a major operator of the twinjet.
Final assembly of the 757-200 and the 757 Freighter is done in the
Renton plant. Parts and assemblies for the airplanes are provided
by Boeing plants in Auburn and Spokane, Wash.; Portland, Ore.; and
Wichita, Kan., as well as by nearly 700 external suppliers.
The 757 Freighter
This first derivative of the 757 was announced by Boeing Dec. 30,
1985, when United Parcel Service ordered 20. Deliveries of these dedicated
cargo airplanes began in Sept. 1987. The basic maximum takeoff weight
of the 757F is 250,000 pounds (113,400 kilograms), with an option
for 255,000 pounds (115,600 kilograms).
The 757F has no passenger windows or doors and no interior amenities.
A large main-deck cargo door is installed in the forward area of the
fuselage on the left-hand side. The flight crew boards the aircraft
through a single entry door installed immediately aft of the flight
deck on the left side of the aircraft.
The interior of the main-deck fuselage has a smooth fiberglass lining.
A fixed rigid barrier installed in the front end of the main deck
serves as a restraint wall between the cargo and the flight deck.
A sliding door in the barrier permits access from the flight deck
to the cargo area.
Up to 15 containers or pallets, each measuring 88 by 125 inches (223
by 317 centimeters) at the base, can be accommodated on the main deck
of the 757F. Total main-deck container volume is 6,600 cubic feet
(187 cubic meters) and the two lower holds of the airplane provide
1,830 cubic feet (51.8 cubic meters) for bulk loading. These provide
a combined maximum revenue payload capability of 87,700 pounds (39,780
kilograms) including container weight. When carrying the maximum load,
the 757F has a range of about 2,900 statute miles (4,020 kilometers).
The 757F keeps ton-mile costs to a minimum with its two-person flight
deck and twin high-bypass-ratio engines offering excellent fuel economy.
This contrasts to older cargo-carrying aircraft in the standard-body
class, such as 707s and DC-8s, that have three-person flight crews
and are powered by four old-technology engines, which consume considerably
more fuel.
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