At the beginning of 1978, The company announced its intention to develop a new family of aircraft using advanced technology. They received the designations Model 757, 767, and 777. The first of these three aircraft were distinguished by the fact that its design retained the same fuselage cross-section as that of the 727, while the 767 and 777 variants have a cross-section that is something average between Boeing 727 and Boeing 747. A Boeing 757 short and medium-range passenger aircraft accommodates 178 passengers in a mixed-class cabin or 196 passengers in a tourist-class cabin, or 224 passengers with a maximum occupancy density. It is one of the most economical in the world passenger aircraft of its class with turbofan engines. Compared to earlier mid-range aircraft, it provides fuel savings of up to 45 percent per passenger. This was made possible through the use of a combination of advanced technology wing, turbofan engines with a high bypass ratio and electronic equipment, making it possible to control the aircraft as efficiently as possible. The development program for the Boeing 767 variant was about five months ahead of the development of the Boeing 757.
The first orders for the Boeing 757, which received the designation Model 757-200, arrived on August 31, 1978. Nineteen aircraft were ordered by British Airways and 21 aircraft by Eastern Air Lines. The five-month gap between the two programs was very important for Boeing’s management to oversee the almost simultaneous development of two new large aircraft. When creating the variant 757, the successful work experience accumulated during the development of its wide-body fellow was used. However, the Boeing 757 aircraft at 53 percent (in value) consists of units manufactured by other companies. The main subcontractors are Avco Aerostructures (wing center and keel), Fairchild Industries (cockpit and wing slats), Rockwell International (nose and tail of the fuselage), and Vought Corporation (tail of the fuselage, stabilizer, and keel).
The power plant consists of two Rolls-Royce RB211-535C or Pratt & Whitney PW2037 turbofan engines suspended on pylons under the wing, but the two airlines, the first to use this version of the aircraft, opted for Rolls-Royce engines. This was the first time that a power plant manufactured outside of America was used on a new Boeing aircraft. Currently, engines with higher thrust (RB211-535E4 and PW2040) are used, which appeared soon after the above. The wing using the new technology has less sweep than the Boeing 727, and the fuselage is 5.97 meters longer. The tricycle chassis, each support has a four-wheeled trolley, twin wheels on the nose strut. The crew consists of two or three people, who have at their disposal modern electronic equipment, including an inertial reference system with laser gyroscopes, a flight control computer system and a digital flight data computer. The combination of these devices allows achieving optimal efficiency. fuel, if they are associated with an automatic flight control system and traction control system. These electronic control systems allow automatic control of the aircraft from the moment shortly after take-off and, if necessary, including landing, the crew is assigned the role of systems control.
The first flight of the Boeing 757 took place in February 1982, and by the end of March 1990. orders and options for 632 cars were received. There are also corporate options, the 757-200M Combi and the 757-200PF Package Freighter.
- Modification: Boeing 757-200
- Wingspan, m: 38.05
- The length of the aircraft, m: 47.32
- The height of the aircraft, m: 13.56
- Wing Area, m2: 185.20
- Weight kg: empty loaded aircraft 62100; maximum take-off 115600
- Engine type: 2 turbofan engine Rolls-Royce RB211-535C (Pratt Whitney PW2040)
- Draft, kgs: 2 x 16964 (18930)
- Maximum speed, km / h: 976
- Cruising speed, km / h: 935
- Practical range, km: 5220
- Practical ceiling, m: 12800
- Crew: 2
- Payload: 189-208 passengers in the mixed class cabin or 239 passengers with a maximum occupancy density or 26,700 kg of payload.