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原題: Boeing

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ボーイング社は、アメリカの多国籍航空宇宙企業であり、商業用ジェット旅客機や軍用機の設計、製造、サービスを行っています。
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Boeing — Grokipedia Fact-checked by Grok 1 month ago Boeing Ara Eve Leo Sal 1x The Boeing Company is an American multinational aerospace corporation that designs, manufactures, and services commercial jet airliners, military aircraft , rotorcraft , satellites, missiles, and related systems for customers worldwide. [1] Founded in 1916 by William E. Boeing in Seattle , Washington, the company has grown into one of the world's largest aerospace firms, operating through primary divisions including Boeing Commercial Airplanes , Boeing Defense, Space & Security , and Boeing Global Services, with products serving over 150 countries and more than 14,000 commercial airplanes in active fleets. [2] Headquartered in Arlington, Virginia since 2022, Boeing employs around 170,000 people globally and generated approximately $78 billion in revenue in 2023, though it has faced substantial financial losses in recent years amid production challenges. [3] Boeing's defining achievements include pioneering the commercial jet age with the 707 in the 1950s , revolutionizing long-haul travel with the 747 jumbo jet in 1969 , and developing efficient twin-engine widebodies like the 777 and 787 Dreamliner, which dominate modern fleets and contribute to over 90% of global air freight capacity. [2] In defense, it is the second-largest U.S. contractor by revenue, producing iconic platforms such as the B-52 bomber, F/A-18 Super Hornet, and Apache helicopter , alongside space systems for NASA including the Space Launch System rocket and Starliner crew vehicle. [4] These innovations have solidified Boeing's role as a top U.S. exporter and key player in national security , with ongoing contracts for advanced fighters like the Next Generation Air Dominance program. [5] The company has encountered major controversies, particularly with the 737 MAX, where design flaws in the Maneuvering Characteristics Augmentation System (MCAS) contributed to two fatal crashes in 2018 and 2019, killing 346 people and prompting a 20-month global grounding, regulatory scrutiny over certification processes, and billions in costs. [6] Subsequent Federal Aviation Administration audits and investigations revealed persistent quality control deficiencies, including non-compliance in manufacturing processes and supply chain issues, exemplified by the 2024 Alaska Airlines Flight 1282 incident involving a mid-flight door plug failure. [7] [6] These events have highlighted systemic pressures prioritizing production speed over rigorous safety protocols, leading to leadership changes, workforce training initiatives, and enhanced oversight to restore integrity. [8] Founding and Early History Origins and Initial Developments William Boeing, a lumber magnate with an interest in aviation sparked by a 1914 flight demonstration, co-designed the B&W seaplane with U.S. Navy Lieutenant Conrad Westervelt in 1915. [9] The prototype, constructed of wood with wire bracing and powered by a 100-horsepower Hall-Scott engine , completed its maiden flight on June 15, 1916, from Seattle 's Lake Union . [10] One month later, on July 15, 1916, Boeing incorporated the Pacific Aero Products Company in Seattle to manufacture seaplane s for naval and commercial use, marking the formal establishment of what became the Boeing Airplane Company in 1917 after Westervelt's departure. [11] Initial production emphasized wooden floatplanes suited to the Pacific Northwest's waterways, with early contracts including U.S. Navy training models that demonstrated reliable performance in coastal patrols. [9] In the 1920s, Boeing shifted toward metal construction, incorporating bolted aluminum tubing for fuselages to enhance durability and reduce weight compared to wood-and-fabric predecessors. [12] This innovation supported pursuits of speed and distance records, such as with the Model 15 pursuit biplane, while commercial demands drove the development of the Model 40 biplane in 1925 for a U.S. Post Office airmail competition. [13] Despite losing to Douglas, the Model 40A—featuring a Pratt & Whitney radial engine and capacity for mail plus two passengers—secured contracts, with 24 units operational by July 1, 1927, initiating subsidized airmail routes from San Francisco to Chicago that expanded U.S. aviation infrastructure and generated revenue for further R&D. [14] Variants like the 40B incorporated passenger cabins, achieving early economic viability through government contracts that prioritized ruggedness for cross-country reliability over luxury. [15] World War II catalyzed massive expansion, as Boeing ramped up production of the B-17 Flying Fortress heavy bomber, with the company manufacturing 6,981 units of the total 12,731 built across facilities. [16] The B-17's four-engine design and defensive armament enabled long-range strategic bombing , proving resilient in European theaters despite high operational losses. [17] Concurrently, the B-29 Superfortress program scaled Boeing's capabilities, with the firm producing 1,119 aircraft from Seattle and Renton plants alone toward a total of 3,970 units. [18] These efforts established expertise in high-volume assembly lines, adapting civilian airmail engineering to wartime demands for precision and volume, ultimately employing tens of thousands and contributing to Allied air superiority through empirical advancements in pressurized cabins and remote-controlled turrets. [19] Expansion and Innovation Jet Age Breakthroughs Boeing pioneered the jet age in military aviation with the B-47 Stratojet, which introduced swept-wing aerodynamics and pod-mounted turbojet engines to achieve high subsonic speeds and extended range for strategic operations. The aircraft's 35-degree swept wings delayed transonic drag rise, allowing the six General Electric J47 turbojets to propel it near Mach 0.9 while carrying heavy bomb loads, a causal advancement rooted in wind-tunnel validations of compressibility effects that prior straight-wing designs could not mitigate. This design enabled rapid penetration of enemy defenses, with over 2,000 units produced to bolster U.S. deterrence against Soviet threats. [20] [21] Building on these principles, the B-52 Stratofortress extended jet capabilities to intercontinental scales, achieving first flight on April 15, 1952, powered by eight Pratt & Whitney J57 turbojets in under-wing pods that optimized airflow and maintenance access. The swept-wing configuration, combined with high-aspect-ratio design, reduced fuel consumption at cruise altitudes above 50,000 feet, where jet engines operate most efficiently due to lower air density and reduced parasite drag, facilitating non-stop global missions with nuclear payloads. Entering service in 1955, the B-52's endurance—up to 14,000 miles unrefueled—solidified Boeing's role in turbine-driven strategic airpower, with 744 built across variants. [20] [22] These military innovations directly informed commercial jetliners, exemplified by the Model 367-80 (Dash 80) prototype's first flight on July 15, 1954, which validated podded turbojet integration for passenger transport. Evolving into the 707, it entered commercial service on October 26, 1958, with Pan American World Airways operating the first revenue flight from New York to Paris , cutting transatlantic times from 12-15 hours on piston aircraft to under 8 hours. High-altitude operation at 35,000-41,000 feet leveraged jet propulsion's thrust-to-weight advantages, minimizing specific fuel consumption through laminar flow over swept wings and reduced structural loads from efficient engine placement, thus enabling economical long-haul routes previously uneconomical. Over 1,010 Boeing 707s were produced, diversifying Boeing's portfolio beyond defense contracts. [23] [24] [25] Iconic Commercial and Military Aircraft The Boeing 747 , a wide-body airliner that pioneered the jumbo jet category, achieved its first flight on February 9, 1969, and entered commercial service with Pan Am on January 22, 1970. [26] Featuring a distinctive hump-shaped upper deck originally conceived to facilitate cargo loading and potential fuselage extension, the aircraft typically accommodated 416 passengers in a three-class layout, with variants capable of up to 660 in high-density configurations. [27] [28] This design enabled economies of scale in long-haul operations, reducing per-passenger costs and fostering mass air travel that integrated global economies by connecting distant markets more affordably. [29] More than 1,500 units were ultimately produced across variants, reflecting sustained demand driven by its range exceeding 8,000 nautical miles and capacity for high-volume passenger and freight transport. [27] [30] In the military domain, the KC-135 Stratotanker, derived from the C-135 family, first flew on August 31, 1956, with the U.S. Air Force acquiring 732 units to establish a foundational aerial refueling capability. [31] This fleet sustained U.S. air superiority during the Cold War by extending the range and endurance of bombers and fighters through boom-and-drogue refueling, enabling strategic operations without reliance on forward bases vulnerable to Soviet threats. [32] Complementing this, the E-3 Sentry AWACS, based on the 707 airframe with an integrated rotating radar dome, underwent initial production testing in October 1975 and achieved operational delivery in March 1977. [33] Approximately 32 E-3s served the U.S. Air Force, providing real-time airborne command, surveillance, and battle management that coordinated multinational forces and detected low-altitude intruders, pivotal to NATO's deterrence posture against Warsaw Pact incursions. [34] These programs exemplified how large-scale production—bolstered by U.S. government contracts and R&D investments—facilitated technological spillovers, such as advanced avionics and materials testing that presaged composite applications in later civilian designs. [35] The 747's high-capacity efficiency, for instance, mitigated some

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