Boeing 777-300ER

The Boeing 777-300ER is the fourth modification of the Boeing 777 family, launched on June 26, 1995. This aircraft is a high-performance version of the -200 models, stretched over 33 feet. Designed to replace the early 747’s, the 777-300 has almost the same passenger capacity and range as the 747-100 / -200, but it burns one-third less fuel and has 40% lower maintenance costs.

In Everett Washington, February 24, 2003. The Boeing 777-300ER (with an increased flight range) first flew into the air. This flight marked the beginning of the flight test program, with a total duration of 1,600 hours. Aircraft certification by the US aviation authorities took place in early 2004. The Boeing 777-300ER, painted in the colors of the Boeing Corporation, took off from Payne Field Airport (Everett, Wash.) At 10 a.m. PST. The flight lasted about three hours, after which the plane landed at the Boeing airfield in Seattle at 13.02.

During the first flight, the airliner was controlled by experienced Boeing pilots – Captain Frank Santoni and Captain John Cashman. F. Santoni served as a senior test pilot for the Boeing 777 program, and J. Cashman was director of Flight Crew Operations and senior pilot for Boeing Commercial Airplanes. After landing F. Santoni said: “The Boeing 777-300ER is an excellent airliner. It is not surprising that pilots call it the best aircraft in the world. Few pilots have a unique opportunity to control the first flight of a new model. This always causes great excitement.”

The first flight of the latest modification of the Boeing 777-300ER took place at an altitude of about 4600 m. The speed was M 0.5 (about 600 km / h). The cruising altitude of the Boeing 777 aircraft was about 10,700 m at a cruising speed of M 0.84 (about 780 km / h). During the flight, J. Cashman and F. Santoni tested several airborne systems and structures. The equipment located onboard recorded the parameters and transferred them to the group responsible for conducting flight tests at the Boeing airfield.

After the first flight, experts analyzed the collected data, as well as crew reports. The flight test program involved a plane that completed its first flight, as well as the second airliner of this modification. The tests were carried out under various conditions, which made it possible to verify the safety and reliability of the new aircraft systems. During the tests, flights of different lengths were completed. In particular, it was envisaged to perform one flight along a longer-range route with a total duration of about 19 hours. And also ground tests were carried out, the duration of which was more than 1000 hours.

A comprehensive test program was designed to confirm the reliability of the new aircraft and its suitability for flying along the routes for which it is intended. The Boeing 777-300ER airliner was actively involved in the design and production of the Boeing 777-300ER, as well as a wide network of suppliers from around the world.

In April 2004, the first Boeing 777-300ER was delivered to International Lease Finance Corp. The first operator of this aircraft was Air France. The Boeing 777-300ER airliner considered the most technologically advanced aircraft in the world, is equipped with advanced avionics and power supply systems, as well as control and air conditioning systems for the cabin.

Engines for modifications of the Boeing 777-200LR and Boeing 777-300ER are manufactured by GE Aircraft Engines. The new engines are recognized as the most powerful engines used in the civilian aircraft industry. They were listed in the Guinness Book of Records because they have the highest thrust among engines of their class.

The first flight of a Boeing 777 equipped with GE90-115B engines marked the opening of a new era in aviation. With the introduction of Boeing 777-300ER and Boeing 777-200LR aircraft, airlines now serve more non-stop routes. As a result, passengers are much more comfortable traveling.

Currently, two modifications of the Boeing 777 with an increased flight range have been created. The Boeing 777-300ER airliner is capable of carrying up to 365 passengers at a distance of 13,750 km. The Boeing 777-200LR modification can carry 301 passengers on routes up to 17,000 km long. The creation of both modifications was launched by Boeing and GE Aircraft Engines in February 2002 at the request of customers who needed a flexible aircraft in operation, providing the ability to service non-stop routes in which passengers are interested.

Since the start of the Boeing 777 creation program in October 1990, these aircraft have occupied more than 70 percent of their market segment. Thirty-nine airlines from around the world placed orders for 619 aircraft of this model, including orders for 61 aircraft modified Boeing 777 Longer-Range.

New aircraft were acquired by airlines such as Air France, All Nippon Airways, EVA Airways, Japan Airlines, and Pakistan International Airlines, as well as leasing companies GE Capital Aviation Services and ILFC.

Soon, a group of companies led by Boeing began implementing a program called Quiet Technology Demonstrator 2. This program should demonstrate the ability to reduce noise levels in the modification of the Boeing 777-300ER, which is already considered one of the least noisy. The duration of the program was three weeks. For flight tests, the Japanese airline All Nippon Airways provided the Boeing 777-300ER, which soon replenished its fleet.

The work took place at the Boeing Test Center in Glasgow, Montana. During the tests, the effectiveness of several innovative solutions designed to reduce noise performance was verified. In particular, such solutions as installing a chevron nozzle on the engine output path and installing a sound-absorbing coating on the engine air intake were considered. Also, solutions designed to reduce chassis noise to reduce landing noise.

The Boeing 777-300ER with an increased flight range, due to the increased efficiency of the aircraft made it even more attractive for airlines and passengers.

The designers of the Boeing 777-300ER have developed an innovative solution that allows the use of the overhead part of the cabin to equip pilots and cabin crew rest areas. The presence of crew rest areas is extremely important for aircraft that are used on long-haul routes. Four to seven seats for passengers were freed up by moving crew rest areas from the main deck of the airline.

The use of the overhead part also allows you to place four to six additional LD-3 containers in the cargo compartment, which makes it possible to increase the volume of transported cargo. Boeing engineers, in collaboration with customers, considered other possibilities for using the overhead part, including the placement of equipment and clothing cabinets there.

The Boeing 777-300ER used smaller and more powerful computer equipment. Electronic Flight Bag (EFB) software, developed by Jeppesen, a Boeing company, not only allows you to place the entire amount of information previously stored on paper, in the on-board computer, but also increase profits, reduce the number of flight delays, reduce fuel consumption and extend engine life. The new software will also improve the situational awareness of pilots and will increase safety.

Electronic Flight Bag includes digitalized and readily accessible flight documentation for the crew, such as aeronautical charts, flight manuals, flight logs, and minimum equipment lists. Also, pilots can use the aircraft’s mass calculation and balancing system integrated into the Electronic Flight Bag, which enables them to quickly determine the optimal speed and thrust of engines in any weather conditions on any runway at any load of the liner. The ability to perform operational calculations allows you to increase the load of the liner taking off from a wet runway by as much as 9000 kg.

Also installed are smaller and lighter computers, which are then easily upgraded. In addition to computers, four key onboard systems were updated: information management systems, electrical load control systems, the main onboard computer, and the air supply control and interior sealing systems.

The tail protection system against touching the runway increases the indicator of permissible take-off mass. Tail-Strike Protection system prevents the tail from touching the runway during take-off. The system, controlled by electric drive mechanisms, allows you to take off from the ground at a lower speed, which, in turn, makes it possible to increase the permissible take-off weight by 1814 – 4536 kg, depending on the conditions of a particular airport and the structural limitations of the aircraft itself.

The system is directly controlled by the main on-board computer, controls the speed of approach of the tail of the liner to the ground, calculating how fast the approach is and what is the distance between the surface of the runway and tail.

If the approach is too fast or the tail unit is dangerously close to the ground, the system ensures that the elevator is moved to a position that slows the moment of separation of the front chassis wheel.

A new half-landing gear, supplied by Goodrich Corp., allows the pilot operating the Boeing 777-300ER to begin tearing away from the runway faster by shifting the center of rotation from the main axis to the rear axle of the three-axle landing gear. In this case, the pilot can increase the angle of rising faster.

The Tail-Strike Protection system and the half-trolley undercarriage work independently of each other, their availability enables airlines to operate Boeing 777-300ER flights from airports with a shorter runway length or increase load if the flight is operated from an airport with a normal runway. The use of beveled wingtips saves fuel and reduces CO2 emissions.

The beveled wingtips designed to modify the Boeing 777-300ER not only increase the economy of the aircraft but also reduce the environmental impact. They improve the flight characteristics of the liner, allow you to take off from runways of shorter lengths, reduce fuel consumption, and allow you to gain altitude faster. Accelerated climb allows you to reduce noise in the area of ​​airports.

Due to the use of wingtips, the fuel consumption of the Boeing 777-300ER modification was reduced by 2%. This made it possible to reduce annual fuel costs by $ 140,000 per aircraft. Boeing 777-300ER liners with wingtips will consume 600 tons less fuel per year, and the amount of harmful carbon dioxide emissions causing the greenhouse effect has been reduced by 1700 tons.

More powerful engines allowed to achieve improved indicators of speed and flight range. On the Boeing 777-300ER modification liners, two GE90-115B engines manufactured by General Electric [NYSE: GE], with a thrust of 115,000 pounds, are installed. The combined thrust of the two engines is almost a quarter-million pounds. Engines providing unprecedented range and speed indicators are very economical. During the tests, it was found that the fuel consumption of the liner is 1% less than originally expected. Reducing the fuel consumption of Boeing 777-300ER airliners by only 1% allowed reducing fuel consumption per aircraft by 402,724 liters per year. This amount of fuel is enough to refuel 130 cars during the year. These engines are truly excellent, they run smoothly and very quietly. However, their power allows you to quickly take off and gain altitude.

Equipping the Boeing 777-300ER airliners with engines with higher thrust allowed to increase the maximum permissible take-off weight to 344500 kg, which is almost 45350 kg more than the Boeing 777-300. At the same time, the control of the aircraft at the take-off, flight, and landing stage did not become more complicated.

Profitability and high reliability of Boeing 777-300ER airliners designed to service long-distance routes. Boeing 777 airliners equipped with two engines are actively operated on routes under the ETOPS program. This program is quite conservative and is built on an evolutionary model. It provides for the operation of twin-engine aircraft on long-haul routes, some sections of which are located at a distance of more than 60 minutes of flight time from the nearest airport.

The ETOPS program has been extremely successful. She proved the suitability of aircraft equipped with two engines for flying on long and ultra-long routes. Since the start of the ETOPS program in 1985, more than 3.3 million flights have been completed. At the current stage, approximately 125 airlines operate about 1,100 flights under this program daily. Boeing’s production aircraft accounted for about 2.6 million flights, and 94 airlines from around the world operating Boeing airliners make about 1000 ETOPS flights daily.

Specifications

  • Modification: Boeing 777-300ER
  • Wingspan, m: 64.80
  • Aircraft Length, m: 73.86
  • The height of the aircraft, m: 18.52
  • Wing Area, m2: 427.80
  • Weight kg: empty loaded aircraft 157200; maximum take-off 299300
  • Engine type: 2 turbofan General Electric GE90-115BL1
  • Thrust, kgs: 2 x 57700
  • Maximum speed, km / h: 965
  • Cruising speed, km / h: 905
  • Practical range, km: 14954
  • Practical ceiling, m: 13140
  • Crew: 2
  • Payload: 364 passengers in a cabin of three classes or
  •    442 passengers in a cabin of two classes.
Graduated from Embry-Riddle Aviation University with a master's degree in aviation science. He began his career as an aviation researcher in local periodicals. Has a pilot license. Now are the author and developer of the Plane Worlds.