IAE International Aero Engines AG is a Zürich -registered joint venture aeroengine manufacturing company.
110-512: It was founded during 1983 specifically to develop an aircraft engine to address the 150-seat single aisle aircraft market, the V2500 turbofan . Produced in collaboration between four of the world’s leading aero engine manufacturers, this engine has become the second most successful commercial jet engine program in production today in terms of volume, and the third most successful commercial jet engine program in aviation history. At one stage, IAE
220-491: A corporate citizenship program centered on charitable contributions in five areas: education, health, human services , environment , the arts , culture, and civic engagement . In February 2012, Boeing Global Corporate Citizenship partnered with the Insight Labs to develop a new model for foundations to more effectively lead the sectors they serve. The company is a member of the U.S. Global Leadership Coalition ,
330-443: A gas turbine engine offered. Thus was born the idea to mate a turbine engine to a traditional propeller. Because gas turbines optimally spin at high speed, a turboprop features a gearbox to lower the speed of the shaft so that the propeller tips don't reach supersonic speeds. Often the turbines that drive the propeller are separate from the rest of the rotating components so that they can rotate at their own best speed (referred to as
440-462: A Washington D.C.–based coalition of more than 400 major companies and NGOs that advocate a larger International Affairs Budget, which funds American diplomatic and development efforts abroad. A series of U.S. diplomatic cables show how U.S. diplomats and senior politicians intervene on behalf of Boeing to help boost the company's sales. In 2007 and 2008, the company benefited from over US$ 10 billion of long-term loan guarantees, helping finance
550-618: A better efficiency. A hybrid system as emergency back-up and for added power in take-off is offered for sale by Axter Aerospace, Madrid, Spain. Small multicopter UAVs are almost always powered by electric motors. Reaction engines generate the thrust to propel an aircraft by ejecting the exhaust gases at high velocity from the engine, the resultant reaction of forces driving the aircraft forwards. The most common reaction propulsion engines flown are turbojets, turbofans and rockets. Other types such as pulsejets , ramjets , scramjets and pulse detonation engines have also flown. In jet engines
660-499: A combined equity ownership share of 49.5% (which is different from UTC's total program share in the IAE collaboration, which stands at 61%). The transaction was completed on 29 June 2012. Rolls-Royce remains active as a major supplier to IAE. During 2011, both Rolls-Royce and Pratt & Whitney proposed establishing a new joint venture to develop engines for future generation mid-size aircraft (120-230 passengers); however, during late 2013, it
770-419: A combustion section where fuel is added and ignited, one or more turbines that extract power from the expanding exhaust gases to drive the compressor, and an exhaust nozzle that accelerates the exhaust gases out the back of the engine to create thrust. When turbojets were introduced, the top speed of fighter aircraft equipped with them was at least 100 miles per hour faster than competing piston-driven aircraft. In
880-564: A common crankshaft. The vast majority of V engines are water-cooled. The V design provides a higher power-to-weight ratio than an inline engine, while still providing a small frontal area. Perhaps the most famous example of this design is the legendary Rolls-Royce Merlin engine, a 27-litre (1649 in ) 60° V12 engine used in, among others, the Spitfires that played a major role in the Battle of Britain . A horizontally opposed engine, also called
990-527: A company providing commercial launch services sending satellites to geostationary orbit from floating platforms. In 2000, Boeing acquired the satellite segment of Hughes Electronics . In December 1996, Boeing announced its intention to merge with McDonnell Douglas , which, following regulatory approval, was completed on August 4, 1997. The delay was caused by objections from the European Commission , which ultimately placed three conditions on
1100-490: A cooling system into the air duct of a hydrogen jet engine permits greater fuel injection at high speed and obviates the need for the duct to be made of refractory or actively cooled materials. This greatly improves the thrust/weight ratio of the engine at high speed. It is thought that this design of engine could permit sufficient performance for antipodal flight at Mach 5, or even permit a single stage to orbit vehicle to be practical. The hybrid air-breathing SABRE rocket engine
1210-440: A cylinder on the other side. Opposed, air-cooled four- and six-cylinder piston engines are by far the most common engines used in small general aviation aircraft requiring up to 400 horsepower (300 kW) per engine. Aircraft that require more than 400 horsepower (300 kW) per engine tend to be powered by turbine engines . An H configuration engine is essentially a pair of horizontally opposed engines placed together, with
SECTION 10
#17327811468931320-405: A few have been rocket powered and in recent years many small UAVs have used electric motors . In commercial aviation the major Western manufacturers of turbofan engines are Pratt & Whitney (a subsidiary of Raytheon Technologies ), General Electric , Rolls-Royce , and CFM International (a joint venture of Safran Aircraft Engines and General Electric). Russian manufacturers include
1430-408: A flat or boxer engine, has two banks of cylinders on opposite sides of a centrally located crankcase. The engine is either air-cooled or liquid-cooled, but air-cooled versions predominate. Opposed engines are mounted with the crankshaft horizontal in airplanes , but may be mounted with the crankshaft vertical in helicopters . Due to the cylinder layout, reciprocating forces tend to cancel, resulting in
1540-572: A fraction of the cost of traditional engines. Such conversions first took place in the early 1970s; and as of 10 December 2006 the National Transportation Safety Board has only seven reports of incidents involving aircraft with Mazda engines, and none of these is of a failure due to design or manufacturing flaws. The most common combustion cycle for aero engines is the four-stroke with spark ignition. Two-stroke spark ignition has also been used for small engines, while
1650-407: A free-turbine engine). A turboprop is very efficient when operated within the realm of cruise speeds it was designed for, which is typically 200 to 400 mph (320 to 640 km/h). Turboshaft engines are used primarily for helicopters and auxiliary power units . A turboshaft engine is similar to a turboprop in principle, but in a turboprop the propeller is supported by the engine and the engine
1760-456: A handful of types are still in production. The last airliner that used turbojets was the Concorde , whose Mach 2 airspeed permitted the engine to be highly efficient. A turbofan engine is much the same as a turbojet, but with an enlarged fan at the front that provides thrust in much the same way as a ducted propeller , resulting in improved fuel efficiency . Though the fan creates thrust like
1870-499: A peak pressure of 30 MPa (300 bar). Although engine weight increases by 30%, aircraft fuel consumption is reduced by 15%. Sponsored by the European Commission under Framework 7 project LEMCOTEC , Bauhaus Luftfahrt, MTU Aero Engines and GKN Aerospace presented the concept in 2015, raising the overall engine pressure ratio to over 100 for a 15.2% fuel burn reduction compared to 2025 engines. On multi-engine aircraft, engine positions are numbered from left to right from
1980-478: A piston-engine with two 10 piston banks without a high-pressure turbine, increasing efficiency with non-stationary isochoric - isobaric combustion for higher peak pressures and temperatures. The 11,200 lb (49.7 kN) engine could power a 50-seat regional jet . Its cruise TSFC would be 11.5 g/kN/s (0.406 lb/lbf/hr) for an overall engine efficiency of 48.2%, for a burner temperature of 1,700 K (1,430 °C), an overall pressure ratio of 38 and
2090-672: A potential downgrade to junk status . On November 1, 2024, the IAM endorsed an improved contract offer which would see a 38% pay rise over four years, a $ 12,000 ratification bonus, and the reinstatement of an annual bonus scheme. On November 5, 2024, Boeing workers accepted the pay deal, ending a seven-week-long walk out. The company's three divisions are: Commercial Airplanes; Defense, Space & Security; and Global Services. In 2018 and 2019 , two Boeing 737 MAX narrow-body passenger airplanes crashed, leaving 346 people dead and no survivors. In response, aviation regulators and airlines around
2200-518: A profit of US$ 9.7 billion, laying off 14,862 workers since 2008, and increasing executive pay by 31% to US$ 41.9 million in 2010 for its top five executives. Boeing has been accused of unethical practices (in violation of the Procurement Integrity Act ) while attempting to submit a revised bid to NASA for their lunar landing project. The firm has been criticized for supplying and profiting from wars , including
2310-424: A propeller, the surrounding duct frees it from many of the restrictions that limit propeller performance. This operation is a more efficient way to provide thrust than simply using the jet nozzle alone, and turbofans are more efficient than propellers in the transsonic range of aircraft speeds and can operate in the supersonic realm. A turbofan typically has extra turbine stages to turn the fan. Turbofans were among
SECTION 20
#17327811468932420-425: A search for replacement fuels for general aviation aircraft a priority for pilots’ organizations. Turbine engines and aircraft diesel engines burn various grades of jet fuel . Jet fuel is a relatively less volatile petroleum derivative based on kerosene , but certified to strict aviation standards, with additional additives. Model aircraft typically use nitro engines (also known as "glow engines" due to
2530-461: A shareholder of the program early on, but the now-renamed Avio still remains as a supplier. The " V " product nomenclature remains as a legacy of the five original shareholders. Workshare on the joint venture's first engine, the V2500 , was divided between the constituent aero-engine companies. Rolls-Royce based the high pressure compressor on a scale-up of the RC34B eight stage research unit used in
2640-463: A single row of cylinders, as used in automotive language, but in aviation terms, the phrase "inline engine" also covers V-type and opposed engines (as described below), and is not limited to engines with a single row of cylinders. This is typically to differentiate them from radial engines . A straight engine typically has an even number of cylinders, but there are instances of three- and five-cylinder engines. The greatest advantage of an inline engine
2750-404: A smooth running engine. Opposed-type engines have high power-to-weight ratios because they have a comparatively small, lightweight crankcase. In addition, the compact cylinder arrangement reduces the engine's frontal area and allows a streamlined installation that minimizes aerodynamic drag. These engines always have an even number of cylinders, since a cylinder on one side of the crankcase "opposes"
2860-462: A statement from United Technologies that suggested that production of the V2500 engine would end in 2016; instead, IAE intends to continue to manufacture the engine so long as there are orders being placed for it. During October 2011, it was announced that Rolls-Royce had agreed to sell its 32.5% stake in the joint venture to Pratt & Whitney's parent company, United Technologies (UTC), giving UTC
2970-533: Is a pre-cooled engine under development. At the April 2018 ILA Berlin Air Show , Munich -based research institute de:Bauhaus Luftfahrt presented a high-efficiency composite cycle engine for 2050, combining a geared turbofan with a piston engine core. The 2.87 m diameter, 16-blade fan gives a 33.7 ultra-high bypass ratio , driven by a geared low-pressure turbine but the high-pressure compressor drive comes from
3080-449: Is a twin-spool engine, allowing only two different speeds for the turbines. Pulsejets are mechanically simple devices that—in a repeating cycle—draw air through a no-return valve at the front of the engine into a combustion chamber and ignite it. The combustion forces the exhaust gases out the back of the engine. It produces power as a series of pulses rather than as a steady output, hence the name. The only application of this type of engine
3190-490: Is above and behind. In the Cessna 337 Skymaster , a push-pull twin-engine airplane, engine No. 1 is the one at the front of the fuselage, while engine No. 2 is aft of the cabin. Aircraft reciprocating (piston) engines are typically designed to run on aviation gasoline . Avgas has a higher octane rating than automotive gasoline to allow higher compression ratios , power output, and efficiency at higher altitudes. Currently
3300-504: Is an American multinational corporation that designs, manufactures, and sells airplanes , rotorcraft , rockets , satellites , and missiles worldwide. The company also provides leasing and product support services. Boeing is among the largest global aerospace manufacturers ; it is the fourth-largest defense contractor in the world based on 2022 revenue and is the largest exporter in the United States by dollar value. Boeing
3410-453: Is bolted to the airframe : in a turboshaft, the engine does not provide any direct physical support to the helicopter's rotors. The rotor is connected to a transmission which is bolted to the airframe, and the turboshaft engine drives the transmission. The distinction is seen by some as slim, as in some cases aircraft companies make both turboprop and turboshaft engines based on the same design. A number of electrically powered aircraft, such as
International Aero Engines - Misplaced Pages Continue
3520-720: Is more common because it is difficult to get enough air-flow to cool the rear cylinders directly. Inline engines were common in early aircraft; one was used in the Wright Flyer , the aircraft that made the first controlled powered flight. However, the inherent disadvantages of the design soon became apparent, and the inline design was abandoned, becoming a rarity in modern aviation. For other configurations of aviation inline engine, such as X-engines , U-engines , H-engines , etc., see Inline engine (aeronautics) . Cylinders in this engine are arranged in two in-line banks, typically tilted 60–90 degrees apart from each other and driving
3630-430: Is of lesser concern, rocket engines can be useful because they produce very large amounts of thrust and weigh very little. A rocket turbine engine is a combination of two types of propulsion engines: a liquid-propellant rocket and a turbine jet engine. Its power-to-weight ratio is a little higher than a regular jet engine, and works at higher altitudes. For very high supersonic/low hypersonic flight speeds, inserting
3740-676: Is ranked 54th on the Fortune 500 list (2020), and ranked 121st on the Fortune Global 500 list (2020). The Boeing Company started in 1916, when American lumber industrialist William E. Boeing founded Pacific Aero Products Company in Seattle, Washington. Shortly before doing so, he and Conrad Westervelt created the "B&W" seaplane . In 1917, the organization was renamed Boeing Airplane Company, with William Boeing forming Boeing Airplane & Transport Corporation in 1928. In 1929,
3850-452: Is responsible for about 11% of greenhouse gases emitted by the U.S. transportation sector. Aviation's share of the greenhouse gas emissions was poised to grow, as air travel increases and ground vehicles use more alternative fuels like ethanol and biodiesel . Boeing estimates that biofuels could reduce flight-related greenhouse-gas emissions by 60 to 80%. The solution blends algae fuels with existing jet fuel . Boeing executives said
3960-539: Is sustainable only as long as orders are good and delivery rates are increasing. From 2013 to 2019, Boeing spent over $ 60 billion on dividends and stock buybacks , twice as much as the development costs of the 787. In 2020, Boeing's second quarter revenue was $ 11.8 billion as a result of the pandemic slump. Due to higher sales in other divisions and an influx in deliveries of commercial jetliners in 2021, second quarter revenue increased by 44%, reaching nearly $ 17 billion. Revenues decreased 15 percent to $ 16.9 billion in
4070-513: Is that it allows the aircraft to be designed with a low frontal area to minimize drag. If the engine crankshaft is located above the cylinders, it is called an inverted inline engine: this allows the propeller to be mounted high up to increase ground clearance, enabling shorter landing gear. The disadvantages of an inline engine include a poor power-to-weight ratio , because the crankcase and crankshaft are long and thus heavy. An in-line engine may be either air-cooled or liquid-cooled, but liquid-cooling
4180-634: Is the first military application of the engine. The consortium is reportedly open to further military applications for the V2500, in addition to the commercial market. The engine's direct competitor is the CFM International CFM56 . Current shareholders are: Aircraft engine An aircraft engine , often referred to as an aero engine , is the power component of an aircraft propulsion system . Aircraft using power components are referred to as powered flight . Most aircraft engines are either piston engines or gas turbines , although
4290-537: The COVID-19 pandemic with plans for a total 10% cut of its workforce or approximately 16,000 positions. In July 2020, Boeing reported a loss of $ 2.4 billion as a result of the pandemic and the Boeing 737 MAX groundings , and that it was in response planning to make more job and production cuts. On August 18, 2020, CEO Dave Calhoun announced further job cuts; on October 28, 2020, nearly 30,000 employees were laid off, as
4400-875: The Israel-Gaza war (2023-present) , demonstrations sought to block shipments of weapons for the Israel Defense Forces at Boeing facilities in St. Charles, Missouri , Tukwila, Washington , and Gresham, Oregon . Students at Florida State University , University of Washington , Saint Louis University , University of Missouri–St. Louis , and Washington University in St. Louis called for their institutions to break partnerships with Boeing. Research estimates that Boeing has made between $ 50 billion to $ 100 billion in revenue from sales to Israel. In 2024, students on hunger strike at Brown University named Boeing among
4510-527: The QinetiQ Zephyr , have been designed since the 1960s. Some are used as military drones . In France in late 2007, a conventional light aircraft powered by an 18 kW electric motor using lithium polymer batteries was flown, covering more than 50 kilometers (31 mi), the first electric airplane to receive a certificate of airworthiness . On 18 May 2020, the Pipistrel E-811 was
International Aero Engines - Misplaced Pages Continue
4620-684: The Rutan Quickie . The single-rotor engine was put into a Chevvron motor glider and into the Schleicher ASH motor-gliders. After the demise of MidWest, all rights were sold to Diamond of Austria, who have since developed a MkII version of the engine. As a cost-effective alternative to certified aircraft engines some Wankel engines, removed from automobiles and converted to aviation use, have been fitted in homebuilt experimental aircraft . Mazda units with outputs ranging from 100 horsepower (75 kW) to 300 horsepower (220 kW) can be
4730-583: The Simi Hills of eastern Ventura County in Southern California , had been contaminated by Rocketdyne with toxic and radioactive waste . Boeing agreed to a cleanup agreement with the EPA in 2017. Clean-up studies and lawsuits are in progress. On July 19, 2022, Boeing announced a renewed partnership with Mitsubishi to produce carbon-neutral and sustainable solutions. The airline industry
4840-484: The United Engine Corporation , Aviadvigatel and Klimov . Aeroengine Corporation of China was formed in 2016 with the merger of several smaller companies. The largest manufacturer of turboprop engines for general aviation is Pratt & Whitney. General Electric announced in 2015 entrance into the market. In this section, for clarity, the term "inline engine" refers only to engines with
4950-558: The V2500-A1 , first entered service with Slovenian flag carrier Adria Airways . During July 1986, IAE confirmed to conduct a preliminary design study for a concept examining a high-bypass engine which used the V2500 core components. This engine, commonly referred to as the SuperFan , had a projected maximum thrust of around 28,000–32,000 lbf while having only 80% of the V2500's specific fuel consumption . Prior to that study,
5060-424: The gyroscopic effects of the heavy rotating engine produced handling problems in aircraft and the engines also consumed large amounts of oil since they used total loss lubrication, the oil being mixed with the fuel and ejected with the exhaust gases. Castor oil was used for lubrication, since it is not soluble in petrol, and the resultant fumes were nauseating to the pilots. Engine designers had always been aware of
5170-485: The jatropha plant to see if it is a sustainable alternative to conventional fuel. A two-hour test flight using a 50–50 mixture of the new biofuel with Jet A-1 in a Rolls-Royce RB-211 engine of a 747–400 was completed on December 30, 2008. The engine was then removed to be studied to identify any differences between the Jatropha blend and regular Jet A1. No effects on performances were found. In 2008 and 2009, Boeing
5280-424: The oxygen necessary for fuel combustion comes from the air, while rockets carry an oxidizer (usually oxygen in some form) as part of the fuel load, permitting their use in space. A turbojet is a type of gas turbine engine that was originally developed for military fighters during World War II . A turbojet is the simplest of all aircraft gas turbines. It consists of a compressor to draw air in and compress it,
5390-601: The 150-seat 7J7 mid-range aircraft, with the SuperFan mounted under the wings instead of the aft fuselage mounting of the 7J7's baseline engine, the General Electric GE36 unducted fan. Airbus was also considering the SuperFan for a 175-seat stretched version of its upcoming Airbus A320 narrowbody aircraft. However, in a board meeting on 7 April 1987, the SuperFan program was officially announced as "indefinitely delayed". By 2003, IAE's 20th year of operation,
5500-509: The Boeing 737 MAX 9. The FAA announced on January 12 that it was expanding its scrutiny of Boeing, with a production audit of the 737 MAX 9. On February 6, the National Transportation Safety Board released a preliminary report indicating that four bolts used to secure the panel had been removed, and appeared not to have been replaced, at Boeing’s factory in Renton, Washington . In March 2024,
5610-817: The Clerget 14F Diesel radial engine (1939) has the same power to weight ratio as a gasoline radial. Improvements in Diesel technology in automobiles (leading to much better power-weight ratios), the Diesel's much better fuel efficiency and the high relative taxation of AVGAS compared to Jet A1 in Europe have all seen a revival of interest in the use of diesels for aircraft. Thielert Aircraft Engines converted Mercedes Diesel automotive engines, certified them for aircraft use, and became an OEM provider to Diamond Aviation for their light twin. Financial problems have plagued Thielert, so Diamond's affiliate — Austro Engine — developed
SECTION 50
#17327811468935720-518: The IAE shareholders Rolls-Royce plc , Pratt & Whitney and MTU Aero Engines had examined several configuration for a high-bypass engine, including several design features like a variable fan blade pitch , a geared fan or counterrotating concepts (geared as well as ungeared). Review of these design studies in June indicated the design of such a high-bypass engine as a single-rotation, geared fan configuration with variable blade pitch. The fan diameter
5830-612: The Justice Department opened a criminal investigation into the Alaska Airlines blowout. In March 2024, CEO Dave Calhoun and board chairman Larry Kellner both announced they would be stepping down from their positions. In 2006, the UCLA Center for Environmental Risk Reduction released a study showing that Boeing's Santa Susana Field Laboratory , a site that was a former Rocketdyne test and development site in
5940-613: The RB401-06 Demonstrator Engine, but with a zero-stage added at the front and a tenth stage added to the rear. Pratt & Whitney developed the combustor and the 2-stage air-cooled high pressure turbine, while the Japanese Aero Engine Corporation provided the low pressure compression system. MTU Aero Engines were responsible for the 5-stage low pressure turbine, while Fiat Avio designed the gearbox. The initial version of this engine,
6050-574: The Wankel engine has been used in motor gliders where the compactness, light weight, and smoothness are crucially important. The now-defunct Staverton-based firm MidWest designed and produced single- and twin-rotor aero engines, the MidWest AE series . These engines were developed from the motor in the Norton Classic motorcycle . The twin-rotor version was fitted into ARV Super2s and
6160-587: The airplane manufacturer was increasingly losing money due to the COVID-19 pandemic. In May 2022, Boeing announced plans to move its global headquarters from Chicago to Arlington, Virginia , a suburb of Washington, D.C. The company said that this decision was made in part to concentrate on its defense work with "proximity to our customers and stakeholders". After the January 2024 Alaska Airlines Flight 1282 and other incidents, one shareholder proposed relocating
6270-401: The airplane was malfunctioning, and ultimately plummeted nose-down to the ground at terrifying speed". While the investigations into the crashes of the 737 MAX were proceeding, the Boeing 777X , the company's largest capacity twin jet and the largest ever built, made its maiden flight on January 25, 2020, but also experienced problems. Following an incident during flight testing in 2021,
6380-517: The company was collaborating with Brazilian biofuels maker Tecbio , Aquaflow Bionomic of New Zealand, and other fuel developers around the world. As of 2007, Boeing had tested six fuels from these companies, and expected to test 20 fuels "by the time we're done evaluating them". Boeing also joined other aviation-related members in the Algal Biomass Organization (ABO) in June 2008. Air New Zealand and Boeing are researching
6490-492: The company was renamed United Aircraft and Transport Corporation , followed by the acquisition of several aircraft makers such as Avion, Chance Vought , Sikorsky Aviation , Stearman Aircraft , Pratt & Whitney , and Hamilton Metalplane. In 1931, the group merged its four smaller airlines into United Airlines . In 1934, aircraft manufacturing was required to be separate from air transportation. Therefore, Boeing Airplane Company became one of three major groups to arise from
6600-419: The company's hiding of information from the safety regulators: a criminal monetary penalty of $ 243.6 million, $ 1.77 billion of damages to airline customers, and a $ 500 million crash-victim beneficiaries fund. In September 2022, Boeing was ordered to pay a further $ 200 million over charges of misleading investors about safety issues related to these crashes. In March 2023, Boeing disputed in court filings that
6710-408: The company. The average salary at Boeing was $ 76,784 in 2011, as reported by former employees. In 2022, Rory Kennedy made a documentary film, Downfall: The Case Against Boeing , streamed by Netflix . She said about the 21st-century history of Boeing "There were many decades when Boeing did extraordinary things by focusing on excellence and safety and ingenuity. Those three virtues were seen as
SECTION 60
#17327811468936820-500: The compression-ignition diesel engine is seldom used. Starting in the 1930s attempts were made to produce a practical aircraft diesel engine . In general, Diesel engines are more reliable and much better suited to running for long periods of time at medium power settings. The lightweight alloys of the 1930s were not up to the task of handling the much higher compression ratios of diesel engines, so they generally had poor power-to-weight ratios and were uncommon for that reason, although
6930-405: The consortium's V2500 engine was reportedly in service with in excess of 80 airlines around the world, totalling nearly 900 aircraft; the worldwide fleet had also surpassed 24 million cumulative flying hours. Furthermore, IAE's customers had placed engine orders valued at a combined figure of $ 25 billion, while the order backlog stood at roughly 2,600 engines. During the following year, the consortium
7040-624: The corporate headquarters back to the Seattle area in hopes of getting engineering and quality control teams on-site access to key decision-makers. Boeing's board soundly dismissed the attempt. In February 2023, Boeing announced plans for laying off approximately 2,000 of its workers from finances and human resources. In May 2023, Boeing acquired autonomous eVTOL air taxi startup Wisk Aero . In June 2024, Boeing agreed to re-acquire Spirit AeroSystems , its longtime supplier of airplane parts, which had been established in 2005 when Boeing spun-off its Wichita division to an investment firm. The deal
7150-515: The crashes through a disintegration of workplace morale . In June 2020, the Federal Aviation Administration found several 737 MAX defects that Boeing deferred to fix, in violation of regulations . In September 2020, the U.S. House of Representatives concluded its own investigation and cited numerous instances where Boeing dismissed employee concerns with a 737 MAX flight stabilizing feature ( MCAS ) that caused
7260-593: The cylinders arranged evenly around the crankshaft, although some early engines, sometimes called semi-radials or fan configuration engines, had an uneven arrangement. The best known engine of this type is the Anzani engine, which was fitted to the Bleriot XI used for the first flight across the English Channel in 1909. This arrangement had the drawback of needing a heavy counterbalance for the crankshaft, but
7370-486: The cylinders in a circle around the crankcase, as in a radial engine, (see above), but the crankshaft is fixed to the airframe and the propeller is fixed to the engine case, so that the crankcase and cylinders rotate. The advantage of this arrangement is that a satisfactory flow of cooling air is maintained even at low airspeeds, retaining the weight advantage and simplicity of a conventional air-cooled engine without one of their major drawbacks. The first practical rotary engine
7480-526: The design of the A340 was modified. Compared to the original design's range of 7,000 nautical miles , the revised version – designated the A340-200 – was projected to have a range up to 8,000 nautical miles with full passenger load. Airbus decided on 26 December 1986 to offer the SuperFan as a primary engine option for the A340. In late January, Boeing announced that it was studying the SuperFan as an option for
7590-562: The dissolution of United Aircraft and Transport; the other two entities were United Aircraft (later United Technologies ) and United Airlines. In 1960, the company bought Vertol Aircraft Corporation , which at the time, was the biggest independent manufacturer of helicopters . During the 1960s and 1970s, the company diversified into industries such as outer space travel, marine craft, agriculture, energy production and transit systems. In 1995, Boeing partnered with Russian, Ukrainian, and Anglo-Norwegian organizations to create Sea Launch ,
7700-581: The engine core is the bypass ratio. Low-bypass engines are preferred for military applications such as fighters due to high thrust-to-weight ratio, while high-bypass engines are preferred for civil use for good fuel efficiency and low noise. High-bypass turbofans are usually most efficient when the aircraft is traveling at 500 to 550 miles per hour (800 to 890 kilometres per hour), the cruise speed of most large airliners. Low-bypass turbofans can reach supersonic speeds, though normally only when fitted with afterburners . The term advanced technology engine refers to
7810-438: The engine works by having a coiled pipe in the combustion chamber that superheats the fuel (propane) before being injected into the air-fuel inlet. In the combustion chamber, the fuel/air mixture ignites and burns, creating thrust as it leaves through the exhaust pipe. Induction and compression of the fuel/air mixture is done both by the pressure of propane as it is injected, along with the sound waves created by combustion acting on
7920-415: The engine's heat-radiating surfaces to the air and tends to cancel reciprocating forces, radials tend to cool evenly and run smoothly. The lower cylinders, which are under the crankcase, may collect oil when the engine has been stopped for an extended period. If this oil is not cleared from the cylinders prior to starting the engine, serious damage due to hydrostatic lock may occur. Most radial engines have
8030-418: The estimated first delivery of the aircraft was delayed until 2024. After further technical problems were discovered in the aircraft in 2022, the release was delayed again until 2025, six years after the original date. On January 5, 2024, on Alaska Airlines Flight 1282 , a door plug blowout occurred on a 737 MAX 9 jetliner after the plane had reached just over 16,000 feet, leaving a door-sized hole in
8140-456: The family. The modifications were described by aerospace periodical Flight International as "unambitious", being mainly restricted to software improvements to the electronic engine control system. Plans for a further upgrade, designated as SelectThree , were also being discussed amongst the consortium's partner companies; an agreement to extend their partnerships through to 2045 has also been finalised that same year. Later that year, IAE clarified
8250-606: The first electric aircraft engine to be awarded a type certificate by EASA for use in general aviation . The E-811 powers the Pipistrel Velis Electro . Limited experiments with solar electric propulsion have been performed, notably the manned Solar Challenger and Solar Impulse and the unmanned NASA Pathfinder aircraft. Many big companies, such as Siemens, are developing high performance electric engines for aircraft use, also, SAE shows new developments in elements as pure Copper core electric motors with
8360-399: The first engines to use multiple spools —concentric shafts that are free to rotate at their own speed—to let the engine react more quickly to changing power requirements. Turbofans are coarsely split into low-bypass and high-bypass categories. Bypass air flows through the fan, but around the jet core, not mixing with fuel and burning. The ratio of this air to the amount of air flowing through
8470-441: The first time since 2008. On October 12, 2024, the company announced plans to cut 17,000 jobs, about 10% of its global workforce, "to align with our financial reality". It would also delay the first deliveries of its 777X airliner by a year and recorded $ 5 billion in losses in the third quarter of the year. On October 28, Boeing initiated a significant share sale, valued at nearly $ 19 billion, to address cash-flow issues and avoid
8580-487: The fuselage and the aircraft made an emergency landing at Portland International Airport successfully with several people onboard injured, although all had subsequently been "medically cleared". The FAA mandated immediate inspections of all 737 MAX 9s fitted with door plugs, thereby grounding 171 aircraft. United Airlines found loose bolts on jets grounded by the FAA, raising questions about possible systemic problems with
8690-461: The highest-ever tax breaks at the state level in 2013. Boeing's spent US$ 16.9 million on lobbying expenditures in 2009. In the 2008 presidential election , Barack Obama "was by far the biggest recipient of campaign contributions from Boeing employees and executives, hauling in US$ 197,000 – five times as much as John McCain , and more than the top eight Republicans combined". Boeing has
8800-497: The intake stacks. It was intended as a power plant for personal helicopters and compact aircraft such as Microlights. A few aircraft have used rocket engines for main thrust or attitude control, notably the Bell X-1 and North American X-15 . Rocket engines are not used for most aircraft as the energy and propellant efficiency is very poor, but have been employed for short bursts of speed and takeoff. Where fuel/propellant efficiency
8910-472: The latter won, and that this may have contributed to the events leading up to the 737 MAX crash crisis. Boeing's corporate headquarters moved from Seattle to Chicago in 2001. In 2018, the company opened its first factory in Europe at Sheffield , UK, reinforced by a research partnership with the University of Sheffield . In May 2020, the company cut over 12,000 jobs due to the drop in air travel during
9020-752: The list of corporations to divest from. Five protesters in solidarity with the Palestinian cause were arrested on felony charges after blocking entrances to a Boeing facility in Heath, Ohio . The student union at Washington University in St. Louis passed a resolution calling on the university to divest from Boeing. The key trends of Boeing are (as at the financial year ending December 31): Between 2010 and 2018, Boeing increased its operating cash flow from $ 3 to $ 15.3 billion, sustaining its share price, by negotiating advance payments from customers and delaying payments to its suppliers. This strategy
9130-430: The many limitations of the rotary engine so when the static style engines became more reliable and gave better specific weights and fuel consumption, the days of the rotary engine were numbered. The Wankel is a type of rotary engine. The Wankel engine is about one half the weight and size of a traditional four-stroke cycle piston engine of equal power output, and much lower in complexity. In an aircraft application,
9240-485: The merger: exclusivity agreements with three US airlines would be terminated, separate accounts would be maintained for the McDonnell-Douglas civil aircraft business, and some defense patents were to be made available to competitors. In 2020, Quartz reported that after the merger there was a "clash of corporate cultures, where Boeing's engineers and McDonnell Douglas's bean-counters went head-to-head", which
9350-433: The modern generation of jet engines. The principle is that a turbine engine will function more efficiently if the various sets of turbines can revolve at their individual optimum speeds, instead of at the same speed. The true advanced technology engine has a triple spool, meaning that instead of having a single drive shaft, there are three, in order that the three sets of blades may revolve at different speeds. An interim state
9460-463: The most common Avgas is 100LL. This refers to the octane rating (100 octane) and the lead content (LL = low lead, relative to the historic levels of lead in pre-regulation Avgas). Refineries blend Avgas with tetraethyllead (TEL) to achieve these high octane ratings, a practice that governments no longer permit for gasoline intended for road vehicles. The shrinking supply of TEL and the possibility of environmental legislation banning its use have made
9570-404: The new AE300 turbodiesel , also based on a Mercedes engine. Competing new Diesel engines may bring fuel efficiency and lead-free emissions to small aircraft, representing the biggest change in light aircraft engines in decades. While military fighters require very high speeds, many civil airplanes do not. Yet, civil aircraft designers wanted to benefit from the high power and low maintenance that
9680-431: The point of view of the pilot looking forward, so for example on a four-engine aircraft such as the Boeing 747 , engine No. 1 is on the left side, farthest from the fuselage, while engine No. 3 is on the right side nearest to the fuselage. In the case of the twin-engine English Electric Lightning , which has two fuselage-mounted jet engines one above the other, engine No. 1 is below and to the front of engine No. 2, which
9790-432: The power-to-weight ratio is very important, making the Wankel engine a good choice. Because the engine is typically constructed with an aluminium housing and a steel rotor, and aluminium expands more than steel when heated, a Wankel engine does not seize when overheated, unlike a piston engine. This is an important safety factor for aeronautical use. Considerable development of these designs started after World War II , but at
9900-630: The purchase of their commercial aircraft in countries including Brazil, Canada, Ireland, and the United Arab Emirates , from the Export-Import Bank of the United States , some 65% of the total loan guarantees the bank made in the period. In December 2011, the non-partisan organization Public Campaign criticized Boeing for spending US$ 52.29 million on lobbying and not paying taxes from 2008 to 2010, instead getting US$ 178 million in tax rebates , despite making
10010-519: The second quarter of 2024, compared to the same time period in 2023. The company's operating loss amounted to $ 1.39 billion and its net loss to $ 1.43 billion, while plane deliveries fell to 92 (from 136 in 2023). The company's employment totals are listed below. Approximately 1.5% of Boeing employees are in the Technical Fellowship program, a program through which Boeing's top engineers and scientists set technical direction for
10120-439: The time the aircraft industry favored the use of turbine engines. It was believed that turbojet or turboprop engines could power all aircraft, from the largest to smallest designs. The Wankel engine did not find many applications in aircraft, but was used by Mazda in a popular line of sports cars . The French company Citroën had developed Wankel powered RE-2 [ fr ] helicopter in 1970's. In modern times
10230-414: The two crankshafts geared together. This type of engine has one or more rows of cylinders arranged around a centrally located crankcase . Each row generally has an odd number of cylinders to produce smooth operation. A radial engine has only one crank throw per row and a relatively small crankcase, resulting in a favorable power-to-weight ratio . Because the cylinder arrangement exposes a large amount of
10340-451: The two fatal accidents, prioritized deadline and budget constraints over safety , and lacked transparency in disclosing essential information to the FAA. It further found that the assumption that simulator training would not be necessary had "diminished safety, minimized the value of pilot training , and inhibited technical design improvements". On January 7, 2021, Boeing settled to pay over $ 2.5 billion after being charged with fraud over
10450-414: The use of a glow plug ) powered by glow fuel , a mixture of methanol , nitromethane , and lubricant. Electrically powered model airplanes and helicopters are also commercially available. Small multicopter UAVs are almost always powered by electricity, but larger gasoline-powered designs are under development. Boeing The Boeing Company , or simply Boeing ( / ˈ b oʊ ɪ ŋ / ),
10560-492: The victims of Ethiopian Airlines Flight 302 (the 2019 crash) experienced any pain and suffering in the final six minutes as the plane was nosediving into the ground, citing "speed of sound" as a defence. Boeing's claim was described as "preposterous" by HuffPost : Passengers aboard the plane, the plaintiffs argued in court, "undeniably suffered horrific emotional distress, pain and suffering, and physical impact/injury while they endured extreme G-forces, braced for impact, knew
10670-493: The war in Yemen where its missiles were found to be used for indiscriminate attacks, killing many civilians. In 2017 Boeing signed a deal with Saudi Arabia which included Saudi Arabia buying military aircraft and guided missile systems. In 2023, it was reported that Boeing sent 1,000 small diameter bombs for the first week of Israeli air attacks on Gaza that were shipped from a US Air Force base by Israeli Air Force . During
10780-405: The world grounded all 737 MAX airliners. A total of 387 aircraft were grounded. Boeing's reputation, business, and financial rating suffered after the groundings, as Boeing's strategy, governance, and focus on profits and cost efficiency were questioned. In 2022, Netflix released an exposé, Downfall: The Case Against Boeing , claiming Boeing's corporate merger with McDonnell Douglas led to
10890-399: The years after the war, the drawbacks of the turbojet gradually became apparent. Below about Mach 2, turbojets are very fuel inefficient and create tremendous amounts of noise. Early designs also respond very slowly to power changes, a fact that killed many experienced pilots when they attempted the transition to jets. These drawbacks eventually led to the downfall of the pure turbojet, and only
11000-648: Was also engaged in the development of the SuperFan , a geared turbofan derived from the V2500; however, work on this project was terminated during the late 1980s. During 2011, an extension agreement was signed between the partner nations to continue to participate in IAE through to 2045. The original collaboration involved Pratt & Whitney of the United States , Rolls-Royce plc of the United Kingdom , Japanese Aero Engine Corporation of Japan and MTU Aero Engines of Germany . FiatAvio withdrew as
11110-598: Was announced that the two firms had decided to forego such a collaboration in favour of their own independent operations. IAE's current purpose is the development, production and aftermarket services of the V2500 aero engine family, which powers the Airbus A320 family and McDonnell Douglas MD-90 aircraft. IAE also supplies the V2500-E5 to power the Embraer KC-390 military transport aircraft; this arrangement
11220-474: Was expected to range from 108 to 118 in while having a bypass ratio of 18:1 to 20:1. Availability of the engine was estimated between 1992 and 1994. In December 1986, the SuperFan was offered to Airbus as a powerplant for the Airbus A340 being developed at that time. In addition to the V2500 core engine, IAE claimed to be able to derive all further components from proven technology. The RB.211 -sized fan
11330-739: Was founded by William E. Boeing in Seattle , Washington, on July 15, 1916. The present corporation is the result of the merger of Boeing with McDonnell Douglas on August 1, 1997. As of 2023, the Boeing Company's corporate headquarters is located in the Crystal City neighborhood of Arlington County, Virginia . The company is organized into three primary divisions: Boeing Commercial Airplanes (BCA), Boeing Defense, Space & Security (BDS), and Boeing Global Services (BGS). In 2021, Boeing recorded $ 62.3 billion in sales. Boeing
11440-616: Was initially discussed in March of the same year before being closed on June 30 at $ 4.7 billion. On September 12, 2024, a vote was held among Boeing machinist workers who are also members of the International Association of Machinists and Aerospace Workers (IAM) labor union, with 94.6% of participating members rejected a contract offer that the union's bargaining committee had endorsed, with 96% voting to strike. At 12:01 am on September 13, Boeing workers went on strike for
11550-422: Was reportedly seeking to boost the output rate of the V2500 to meet strong demand from the civil sector of the market. During the latter half of the decade, IAE embarked on a sales drive in the growing Chinese market. During early 2011, IAE announced a commitment to developing a new generation of the V2500 engine, referred to as SelectTwo , along with the provision of substantial support and continued investment in
11660-420: Was second on the list of Top 100 US Federal Contractors , with contracts totaling US$ 22 billion and US$ 23 billion respectively. Between 1995 and early 2021, the company agreed to pay US$ 4.3 billion to settle 84 instances of misconduct, including US$ 615 million in 2006 in relation to illegal hiring of government officials and improper use of proprietary information. Boeing secured
11770-572: Was the Gnome Omega designed by the Seguin brothers and first flown in 1909. Its relative reliability and good power to weight ratio changed aviation dramatically. Before the first World War most speed records were gained using Gnome-engined aircraft, and in the early years of the war rotary engines were dominant in aircraft types for which speed and agility were paramount. To increase power, engines with two rows of cylinders were built. However,
11880-479: Was the German unmanned V1 flying bomb of World War II . Though the same engines were also used experimentally for ersatz fighter aircraft, the extremely loud noise generated by the engines caused mechanical damage to the airframe that was sufficient to make the idea unworkable. The Gluhareff Pressure Jet (or tip jet) is a type of jet engine that, like a valveless pulsejet, has no moving parts. Having no moving parts,
11990-406: Was to be driven through a Tyne -technology gearbox. This configuration had a 20:1 bypass ratio and was expected to provide a thrust of 30,000 lbf. Due to the application of existing technology, the costs as well as the risks for the SuperFan development program were appraised lower than those of the competing CFM56-5 engine. Due to the lower specific fuel consumption and higher thrust rating,
12100-487: Was used to avoid the spark plugs oiling up. In military aircraft designs, the large frontal area of the engine acted as an extra layer of armor for the pilot. Also air-cooled engines, without vulnerable radiators, are slightly less prone to battle damage, and on occasion would continue running even with one or more cylinders shot away. However, the large frontal area also resulted in an aircraft with an aerodynamically inefficient increased frontal area. Rotary engines have
#892107