|
Stearman XA-21
The Stearman XA-21 (Model X-100) was a competitor in a United States Army Air Corps competition for a twin-engined attack aircraft which (after redesigns) led to the Douglas A-20 Havoc, Martin A-22 Maryland and North American B-25 Mitchell. Design and development The X-100, designated XA-21 following purchase by the Army Air Corps, was a twin-engined high-winged monoplane of all-metal construction."Stearman XA-21 (Stepped Cockpit)." Museum of the United States Air Force. Retrieved: 17 July 2017. Its initial design featured an unusual " stepless cockpit" arrangement, much like those on most German |
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] |
Bombardier (air Force)
A bombardier or bomb aimer is the crew member of a bomber aircraft responsible for the targeting of aerial bombs. "Bomb aimer" was the preferred term in the military forces of the Commonwealth, while "bombardier" (from the French word for "bomb thrower" and similar in meaning to "grenadier") was the equivalent position in the United States Armed Forces. In many planes, the bombardier took control of the airplane during the bombing run, using a device such as the Norden bombsight which was connected to the autopilot of the plane. Often stationed in the extreme front of the aircraft, on the way to the target and after releasing the bombs, he could also serve as the front gunner in aircraft that had a front turret. In the latter part of the 20th century, the title of bombardier fell into disuse, due largely to changes in technology, emanating from the replacement of this manual function with the development of computerized technology and smart bombs, that has given rise to ter ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shoulder-wing Aircraft
A monoplane is a fixed-wing aircraft configuration with a single mainplane, in contrast to a biplane or other types of multiplanes, which have multiple planes. A monoplane has inherently the highest efficiency and lowest drag of any wing configuration and is the simplest to build. However, during the early years of flight, these advantages were offset by its greater weight and lower manoeuvrability, making it relatively rare until the 1930s. Since then, the monoplane has been the most common form for a fixed-wing aircraft. Characteristics Support and weight The inherent efficiency of the monoplane is best achieved in the cantilever wing, which carries all structural forces internally. However, to fly at practical speeds the wing must be made thin, which requires a heavy structure to make it strong and stiff enough. External bracing can be used to improve structural efficiency, reducing weight and cost. For a wing of a given size, the weight reduction allows it to fly slower a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stearman Aircraft
Stearman Aircraft Corporation was an Aerospace manufacturer, aircraft manufacturer in Wichita, Kansas. Although the company designed a range of other aircraft, it is most known for producing the Boeing-Stearman Model 75, Model 75, which is commonly known simply as the "Stearman" or "Boeing Stearman". History Lloyd Stearman established the Stearman Aircraft Corporation in 1927 in aviation, 1927. Initially, the company was founded as Stearman Aircraft Corporation in October 1926 at Venice, California, where four C1 and C2 biplanes were built before production halted for financial reasons. On 27 September 1927, a new Stearman Aircraft Corporation was founded. The factory was then established in Wichita, Kansas, with financing of Walter Innes, where the new model Stearman C3 and Stearman 4 Speedmail were constructed. Two years later, he sold it to the United Aircraft and Transport Corporation. The Northrop Aircraft Corporation was merged into Stearman in July 1931. In September 1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1930s United States Attack Aircraft
Year 193 ( CXCIII) was a common year starting on Monday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Sosius and Ericius (or, less frequently, year 946 ''Ab urbe condita''). The denomination 193 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years. Events By place Roman Empire * January 1 – Year of the Five Emperors: The Roman Senate chooses Publius Helvius Pertinax, against his will, to succeed the late Commodus as Emperor. Pertinax is forced to reorganize the handling of finances, which were wrecked under Commodus, to reestablish discipline in the Roman army, and to suspend the food programs established by Trajan, provoking the ire of the Praetorian Guard. * March 28 – Pertinax is assassinated by members of the Praetorian Guard, who storm the imperial palace. The Empire is auctioned off ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Military Aircraft Of The United States
Lists of military aircraft of the United States cover current and former aircraft of the United States Armed Forces. By designation * List of United States Air Force aircraft designations (1919–1962) * List of United States Navy aircraft designations (pre-1962) * List of United States Army aircraft designations (1956–1962) * List of United States Tri-Service aircraft designations * List of U.S. DoD aircraft designations * List of undesignated military aircraft of the United States Other lists * List of active United States military aircraft * List of United States military helicopters * List of aircraft of the United States during World War II *Future military aircraft of the United States * List of U.S. DoD aircraft designations *List of currently active United States naval aircraft *List of active United States Air Force aircraft *List of military aircraft of the United States *UAVs in the U.S. military External links OrBat United States of America – MilAvia Press.c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bristol Blenheim
The Bristol Blenheim is a British light bomber aircraft designed and built by the Bristol Aeroplane Company (Bristol) which was used extensively in the first two years of the Second World War, with examples still being used as trainers until the end of the war. Development began with the ''Type 142'', a civil airliner, in response to a challenge from Lord Rothermere to produce the fastest commercial aircraft in Europe. The ''Type 142'' first flew in April 1935, and the Air Ministry, impressed by its performance, ordered a modified design as the ''Type 142M'' for the Royal Air Force (RAF) as a bomber. Deliveries of the newly named Blenheim to RAF squadrons commenced on 10 March 1937. In service the Type 142M became the Blenheim Mk.I which would be developed into the longer Type 149, designated the Blenheim Mk.IV, except in Canada where Fairchild Canada built the Type 149 under licence as the Bolingbroke. The Type 160 Bisley was also developed from the Blenheim, but was already o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Junkers Ju 88
The Junkers Ju 88 is a German World War II ''Luftwaffe'' twin-engined multirole combat aircraft. Junkers Aircraft and Motor Works (JFM) designed the plane in the mid-1930s as a so-called ''Schnellbomber'' ("fast bomber") that would be too fast for fighters of its era to intercept. It suffered from technical problems during its development and early operational periods but became one of the most versatile combat aircraft of the war. Like a number of other ''Luftwaffe'' bombers, it served as a bomber, dive bomber, night fighter, torpedo bomber, reconnaissance aircraft, heavy fighter and at the end of the war, as a flying bomb. Despite a protracted development, it became one of the ''Luftwaffe''s most important aircraft. The assembly line ran constantly from 1936 to 1945 and more than 15,000 Ju 88s were built in dozens of variants, more than any other twin-engine German aircraft of the period. Throughout production the basic structure of the aircraft remained unchanged.Angelucci a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
M1919 Browning Machine Gun
The M1919 Browning is a .30 caliber medium machine gun that was widely used during the 20th century, especially during World War II, the Korean War, and the Vietnam War. The M1919 saw service as a light infantry, coaxial, mounted, aircraft, and anti-aircraft machine gun by the U.S. and many other countries. The M1919 was an air-cooled development of the standard US machine gun of World War I, the John M. Browning-designed water-cooled M1917. The emergence of general-purpose machine guns in the 1950s pushed the M1919 into secondary roles in many cases, especially after the arrival of the M60 in US Army service. The United States Navy also converted many to 7.62 mm NATO, and designated them Mk 21 Mod 0; they were commonly used on riverine craft in the 1960s and 1970s in Vietnam. Many NATO countries also converted their examples to 7.62 mm caliber, and these remained in service well into the 1990s, as well as up to the present day in some countries. Operation Loading The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radial Engine
The radial engine is a reciprocating type internal combustion engine configuration in which the cylinders "radiate" outward from a central crankcase like the spokes of a wheel. It resembles a stylized star when viewed from the front, and is called a "star engine" in some other languages. The radial configuration was commonly used for aircraft engines before gas turbine engines became predominant. Engine operation Since the axes of the cylinders are coplanar, the connecting rods cannot all be directly attached to the crankshaft unless mechanically complex forked connecting rods are used, none of which have been successful. Instead, the pistons are connected to the crankshaft with a master-and-articulating-rod assembly. One piston, the uppermost one in the animation, has a master rod with a direct attachment to the crankshaft. The remaining pistons pin their connecting rods' attachments to rings around the edge of the master rod. Extra "rows" of radial cylinders can be added i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pratt & Whitney R-2180-A Twin Hornet
The Pratt & Whitney R-2180-A Twin Hornet was a radial engine developed in the United States by Pratt & Whitney. It had two rows of seven cylinders each. Applications * Douglas DC-4E * North American XB-21 * Republic P-44 Rocket * Stearman XA-21 The Stearman XA-21 (Model X-100) was a competitor in a United States Army Air Corps competition for a twin-engined attack aircraft which (after redesigns) led to the Douglas A-20 Havoc, Martin A-22 Maryland and North American B-25 Mitchell. De ... Specifications (R-2180-A) See also References * * External links Aerofiles Reciprocating Engines page* https://web.archive.org/web/20160411162935/http://www.enginehistory.org/P%26W/R-2180/R-2180Index.pdf {{DEFAULTSORT:Pratt and Whitney R-2180-A Twin Hornet 1930s aircraft piston engines Aircraft air-cooled radial piston engines R-2180 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stearman XA-21 Parked
Stearman is a surname. Notable people with the name include: * Lloyd Stearman (1898–1975), American aviation pioneer * Richard Stearman (born 1987), English footballer * William Stearman (1813–1846) English cricketer * William L. Stearman (born 1922), American government official, aviator and author See also * Stearman Aircraft, a company founded by Lloyd Stearman ** Boeing-Stearman Model 75 The Stearman (Boeing) Model 75 is a biplane formerly used as a military trainer aircraft, of which at least 10,626 were built in the United States during the 1930s and 1940s. Stearman Aircraft became a subsidiary of Boeing in 1934. Widely known ..., a Stearman Aircraft biplane trainer commonly known eponymously as a Stearman * Sterman, a surname * Stermann, a surname * {{surname, Stearman ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
.jpg "Click for more on -> Junkers Ju 88")
.jpg "Click for more on -> M1919 Browning Machine Gun")
