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Douglas O-8
The Douglas O-2 was a 1920s American observation aircraft built by the Douglas Aircraft Company. Development The important family of Douglas observation aircraft sprang from two XO-2 prototypes, the first of which was powered by the 420 hp (313 kW) Liberty V-1650-1 V-engine and test-flown in the autumn of 1924. The second XO-2 was powered by the 510 hp (380 kW) Packard 1A-1500 Vee engine, which proved unreliable. The US Army ordered 45 O-2 production aircraft in 1925, these retaining the XO-2's welded steel tube fuselage, wooden wings and overall fabric covering but at the same time introducing aluminum panels on the forward fuselage. The XO-2 had been flown with short and long-span wings, the latter giving improved handling and therefore being specified for the production aircraft. The fixed tailskid landing gear included a main unit of the divided type, the horizontal tail surface was strut braced, and the engine was cooled by a tunnel radiator. The O-2 pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
WikiProject Aircraft
A WikiProject, or Wikiproject, is a Wikimedia movement affinity group for contributors with shared goals. WikiProjects are prevalent within the largest wiki, Wikipedia, and exist to varying degrees within sister projects such as Wiktionary, Wikiquote, Wikidata, and Wikisource. They also exist in different languages, and translation of articles is a form of their collaboration. During the COVID-19 pandemic, CBS News noted the role of Wikipedia's WikiProject Medicine in maintaining the accuracy of articles related to the disease. Another WikiProject that has drawn attention is WikiProject Women Scientists, which was profiled by '' Smithsonian'' for its efforts to improve coverage of women scientists which the profile noted had "helped increase the number of female scientists on Wikipedia from around 1,600 to over 5,000". On Wikipedia Some Wikipedia WikiProjects are substantial enough to engage in cooperative activities with outside organizations relevant to the field at issue. For e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Battle Of Shanghai
The Battle of Shanghai () was the first of the twenty-two major engagements fought between the National Revolutionary Army (NRA) of the Republic of China (ROC) and the Imperial Japanese Army (IJA) of the Empire of Japan at the beginning of the Second Sino-Japanese War. It lasted from August 13, 1937, to November 26, 1937, and was one of the largest and bloodiest battles of the entire war, later described as "Stalingrad on the Yangtze", and is often regarded as the battle where World War II started. After over three months of extensive fighting on land, in the air and at sea, the battle concluded with a victory for Japan. Since the Japanese invasion of Manchuria in 1931 followed by the Japanese attack of Shanghai in 1932, there had been ongoing armed conflicts between China and Japan without an official declaration of war. These conflicts finally escalated in July 1937, when the Marco Polo Bridge Incident triggered the full advance from Japan. Dogged Chinese resistance at Sha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Axle
An axle or axletree is a central shaft for a rotating wheel or gear. On wheeled vehicles, the axle may be fixed to the wheels, rotating with them, or fixed to the vehicle, with the wheels rotating around the axle. In the former case, bearings or bushings are provided at the mounting points where the axle is supported. In the latter case, a bearing or bushing sits inside a central hole in the wheel to allow the wheel or gear to rotate around the axle. Sometimes, especially on bicycles, the latter type axle is referred to as a ''spindle''. Terminology On cars and trucks, several senses of the word ''axle'' occur in casual usage, referring to the shaft itself, its housing, or simply any transverse pair of wheels. Strictly speaking, a shaft which rotates with the wheel, being either bolted or splined in fixed relation to it, is called an ''axle'' or ''axle shaft''. However, in looser usage, an entire assembly including the surrounding axle housing (typically a casting) is als ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Strut
A strut is a structural component commonly found in engineering, aeronautics, architecture and anatomy. Struts generally work by resisting longitudinal compression, but they may also serve in tension. Human anatomy Part of the functionality of the clavicle is to serve as a strut between the scapula and sternum, resisting forces that would otherwise bring the upper limb close to the thorax. Keeping the upper limb away from the thorax is vital for its range of motion. Complete lack of clavicles may be seen in cleidocranial dysostosis, and the abnormal proximity of the shoulders to the median plane exemplifies the clavicle's importance as a strut. Architecture and construction Strut is a common name in timber framing for a support or brace of scantlings lighter than a post. Frequently struts are found in roof framing from either a tie beam or a king post to a principal rafter. Struts may be vertically plumb or leaning (then called canted, raking, or angled) and may be straight ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ailerons
An aileron (French for "little wing" or "fin") is a hinged flight control surface usually forming part of the trailing edge of each wing of a fixed-wing aircraft. Ailerons are used in pairs to control the aircraft in Flight dynamics, roll (or movement around the aircraft's Flight control surfaces#Longitudinal axis, longitudinal axis), which normally results in a change in flight path due to the tilting of the Lift (force), lift vector. Movement around this axis is called 'rolling' or 'banking'. Considerable controversy exists over credit for the invention of the aileron. The Wright brothers and Glenn Curtiss fought a years-long Wright brothers patent war, legal battle over the Wright patent of 1906, which described a method of wing-warping to achieve lateral control. The brothers prevailed in several court decisions which found that Curtiss's use of ailerons violated the Wright patent. Ultimately, the World War I, First World War compelled the U.S. Government to legislate a le ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Guard Of The United States
The National Guard is a state-based military force that becomes part of the reserve components of the United States Army and the United States Air Force when activated for federal missions.National Guard: FAQ . . Accessed February 2, 2022. It is a military reserve force composed of National Guard military members or units of each state and the territories of , the |
USAAC
The United States Army Air Corps (USAAC) was the aerial warfare service component of the United States Army between 1926 and 1941. After World War I, as early aviation became an increasingly important part of modern warfare, a philosophical rift developed between more traditional ground-based army personnel and those who felt that aircraft were being underutilized and that air operations were being stifled for political reasons unrelated to their effectiveness. The USAAC was renamed from the earlier United States Army Air Service on 2 July 1926, and was part of the larger United States Army. The Air Corps became the United States Army Air Forces (USAAF) on 20 June 1941, giving it greater autonomy from the Army's middle-level command structure. During World War II, although not an administrative echelon, the Air Corps (AC) remained as one of the combat arms of the Army until 1947, when it was legally abolished by legislation establishing the Department of the Air Force. The Air ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oleo (shock Absorber)
An oleo strut is a pneumatic air–oil hydraulic shock absorber used on the landing gear of most large aircraft and many smaller ones. This design cushions the impacts of landing and damps out vertical oscillations. It is undesirable for an airplane to bounce on landing as it could lead to a loss of control, and the landing gear should not add to this tendency. A steel coil spring stores impact energy from landing and then releases it, while an oleo strut instead absorbs this energy, reducing bounce. As the strut compresses, the spring rate increases dramatically because the air is being compressed. The viscosity of the oil dampens the rebound movement. History and applications The original design for the oleo-pneumatic shock-absorbing strut was patented by British manufacturing conglomerate Vickers Armstrong during 1915. It had been derived from the recuperative gear design of the Vickers gun, controlling recoil by forcing oil through precisely sized orifices. Vickers' oleo str ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Japanese Aircraft Carrier Kaga
was an aircraft carrier built for the Imperial Japanese Navy (IJN) and was named after the former Kaga Province in present-day Ishikawa Prefecture. Originally intended to be one of two s, ''Kaga'' was converted under the terms of the Washington Naval Treaty to an aircraft carrier as the replacement for the battlecruiser , which had been irreparably damaged during the 1923 Great Kantō earthquake. ''Kaga'' was rebuilt in 1933–1935, increasing her top speed, improving her exhaust systems, and adapting her flight decks to more modern, heavier aircraft. The ship figured prominently in the development of the IJN's carrier striking force doctrine, which grouped carriers together to give greater mass and concentration to their air power. A revolutionary strategic concept at the time, the employment of the doctrine was crucial in enabling Japan to attain its initial strategic goals during the first six months of the Pacific War. ''Kaga''s aircraft first supported Japanese troops in C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nakajima A2N
The Nakajima A2N or Navy Type 90 Carrier Fighter was a Japanese carrier-borne fighter of the 1930s. It was a single-engined biplane of mixed construction, with a fixed tailwheel undercarriage. Design and development The A2N was originally developed as a private venture by Nakajima for the Imperial Japanese Navy. It was based loosely on the Boeing Model 69 and Boeing Model 100, examples of both having been imported in 1928 and 1929 respectively. Takao Yoshida led the design team and two prototypes, designated Navy Type 90 Carrier Fighter in anticipation of Navy acceptance, were ready by December 1929. Powered by Bristol Jupiter VI engines, these were rejected, not being regarded as offering a significant improvement over the Nakajima A1N. Jingo Kurihara carried out a major redesign and another prototype, the A2N1, powered by a Nakajima Kotobuki 2, was completed in May 1931. The type was adopted by the Navy in April 1932. A two-seat trainer, the A3N3-1 (Navy Type 90 Traini ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Akio Matsuba
was an officer and ace fighter pilot in the Imperial Japanese Navy (IJN) during the Second Sino-Japanese War and the Pacific theater of World War II. Matsuba was officially credited with destroying a total of 18 enemy aircraft in aerial combat. Akio Matsuba was stationed aboard the fleet aircraft carrier ''Kaga'' on the very first day of combat operations in the Second Sino-Japanese War-Second World War at the ''Battle of Shanghai'', and flying an A2N in his very first combat mission in support of Japanese troop-landings in Shanghai on 16 August 1937, Matsuba would share in the shooting down of a Chinese Air Force Douglas O-2M, the first kill of many kills to come for him as the war eventually expanded into the Pacific War. He would claim six F6F Hellcats from Task Force 58 shot-down in two days of battles fought over Iwo Jima on 03 and 04 July 1944, half-a-year before the official ''Battle of Iwo Jima The Battle of Iwo Jima (19 February – 26 March 1945) was a major ba ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Curtiss BF2C Goshawk
The Curtiss BF2C Goshawk (Model 67) was a United States 1930s naval biplane aircraft that saw limited success and was part of a long line of Hawk Series airplanes made by the Curtiss Aeroplane and Motor Company for the American military, and for export as the Model 68 Hawk III. Design and development The United States Navy and Curtiss felt that the F11C-2 possessed development potential, and the Navy decided to procure a variant with retractable landing gear. This variant, which still had the F11C-2's classic "Hawk" wood wing with its flat-bottomed Clark Y airfoil, was designated XF11C-3 by the Navy and Model 67 by Curtiss. The main gear retraction system was inspired by the Grover Loening-designed system on the Grumman XFF-1 prototype, and was manually operated. The XF11C-3 was first delivered to the USN in May 1933, with a Wright R-1820-80 radial engine rated at . Trials revealed a increase in speed over the F11C-2, but the extra weight caused a decrease in maneuverabil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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