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PBJ-1
The North American B-25 Mitchell is an American medium bomber that was introduced in 1941 and named in honor of Brigadier General Billy Mitchell, William "Billy" Mitchell, a pioneer of U.S. military aviation. Used by many Allies of World War II, Allied air forces, the B-25 served in every theater of World War II, and after the war ended, many remained in service, operating across four decades. Produced in numerous variants, nearly 10,000 B-25s were built. It was the most-produced American medium bomber and the List of most-produced aircraft , third most-produced American bomber overall. These included several limited models such as the F-10 reconnaissance aircraft, the AT-24 crew trainers, and the United States Marine Corps' PBJ-1 Maritime patrol aircraft, patrol bomber. Design and development In March 1939, the United States Army Air Corps, US Army Air Corps issued a specification for a medium bomber that was capable of carrying a payload of over at . North American Aviati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Medium Bomber
A medium bomber is a military bomber Fixed-wing aircraft, aircraft designed to operate with medium-sized Aerial bomb, bombloads over medium Range (aeronautics), range distances; the name serves to distinguish this type from larger heavy bombers and smaller light bombers. Mediums generally carried about two tons of bombs, compared to light bombers that carried one ton, and heavies that carried four or more. The term was used prior to and during World War II, based on available parameters of Aircraft engine, engine and Aerospace engineering, aeronautical technology for bomber aircraft designs at that time. After the war, medium bombers were replaced in world air forces by more advanced and capable aircraft. History In the early 1930s many air forces were looking to modernize their existing bomber aircraft fleets, which frequently consisted of older biplanes. The new designs were typically twin-engined monoplanes, often of all-metal construction, and optimized for high enough pe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alfred T
Alfred may refer to: Arts and entertainment *''Alfred J. Kwak'', Dutch-German-Japanese anime television series * ''Alfred'' (Arne opera), a 1740 masque by Thomas Arne * ''Alfred'' (Dvořák), an 1870 opera by Antonín Dvořák *"Alfred (Interlude)" and "Alfred (Outro)", songs by Eminem from the 2020 album '' Music to Be Murdered By'' Business and organisations * Alfred, a radio station in Shaftesbury, England *Alfred Music, an American music publisher *Alfred University, New York, U.S. * The Alfred Hospital, a hospital in Melbourne, Australia People * Alfred (name) includes a list of people and fictional characters called Alfred * Alfred the Great (848/49 – 899), or Alfred I, a king of the West Saxons and of the Anglo-Saxons Places Antarctica * Mount Alfred (Antarctica) Australia * Alfredtown, New South Wales * County of Alfred, South Australia Canada * Alfred and Plantagenet, Ontario ** Alfred, Ontario, a community in Alfred and Plantagenet * Alfred Island, Nunavut * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flak
Anti-aircraft warfare (AAW) is the counter to aerial warfare and includes "all measures designed to nullify or reduce the effectiveness of hostile air action".AAP-6 It encompasses surface-based, subsurface ( submarine-launched), and air-based weapon systems, in addition to associated sensor systems, command and control arrangements, and passive measures (e.g. barrage balloons). It may be used to protect naval, ground, and air forces in any location. However, for most countries, the main effort has tended to be homeland defense. Missile defense is an extension of air defence, as are initiatives to adapt air defence to the task of intercepting any projectile in flight. Most modern anti-aircraft (AA) weapons systems are optimized for short-, medium-, or long-range air defence, although some systems may incorporate multiple weapons (such as both autocannons and surface-to-air missiles). 'Layered air defence' usually refers to multiple 'tiers' of air defence systems which, when ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
321st Bombardment Group
The 321st Air Expeditionary Wing was a United States Air Force unit assigned United States Air Forces Central, the USAF component command of United States Central Command. The unit was reestablished on 1 November 2008 and was a nexus of all Coalition Air Force Training Teams and the Iraqi Air Force at COB Speicher. It was previously the 321st Bombardment Group (Medium), which flew B-25 Mitchells in combat with the Northwest African Strategic Air Force in 1943 and the Mediterranean Allied Tactical Air Force in 1944–45. It became a Strategic Missile Wing, and later the 321st Air Expeditionary Group. In 2001, the wing was converted to provisional status and allocated to Air Combat Command. It was believed to be active between 2001 and 2004, and deployed to Masirah Air Base, Oman. Its operational component was believed to be the 355th Air Expeditionary Group. History World War II Constituted as 321st Bombardment Group (Medium) on 19 June 1942 and activated on 26 June at Bar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
B-25 Bomber Is Assembled , ('B minus L'), the difference between the baryon number (B) and the lepton number (L)
{{Disambiguation ...
B- may refer to: *B-, a blood type *B- (grade), an academic grade *B − L In particle physics, ''B'' − ''L'' (pronounced "bee minus ell") is a quantum number which is the difference between the baryon number () and the lepton number () of a quantum system. Details This quantum number is the charge of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hearing Loss
Hearing loss is a partial or total inability to hear. Hearing loss may be present at birth or acquired at any time afterwards. Hearing loss may occur in one or both ears. In children, hearing problems can affect the ability to acquire spoken language, and in adults it can create difficulties with social interaction and at work. Hearing loss can be temporary or permanent. Hearing loss related to age usually affects both ears and is due to cochlear hair cell loss. In some people, particularly older people, hearing loss can result in loneliness. Hearing loss may be caused by a number of factors, including: genetics, ageing, exposure to noise, some infections, birth complications, trauma to the ear, and certain medications or toxins. A common condition that results in hearing loss is chronic ear infections. Certain infections during pregnancy, such as cytomegalovirus, syphilis and rubella, may also cause hearing loss in the child. Hearing loss is diagnosed when hearing ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reciprocating Engine
A reciprocating engine, more often known as a piston engine, is a heat engine that uses one or more reciprocating pistons to convert high temperature and high pressure into a rotating motion. This article describes the common features of all types. The main types are: the internal combustion engine, used extensively in motor vehicles; the steam engine, the mainstay of the Industrial Revolution; and the Stirling engine for niche applications. Internal combustion engines are further classified in two ways: either a spark-ignition (SI) engine, where the spark plug initiates the combustion; or a compression-ignition (CI) engine, where the air within the cylinder is compressed, thus heating it, so that the heated air ignites fuel that is injected then or earlier.''Thermodynamics: An Engineering Approach'' by Yunus A. Cengal and Michael A. Boles Common features in all types There may be one or more pistons. Each piston is inside a cylinder, into which a gas is introduced, e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Birmingham, Alabama
Birmingham ( ) is a city in the north central region of Alabama, United States. It is the county seat of Jefferson County, Alabama, Jefferson County. The population was 200,733 at the 2020 United States census, 2020 census, making it the List of municipalities in Alabama, second-most populous city in Alabama, and estimated at 196,357 in 2024. The Birmingham metropolitan area, Alabama, Birmingham metropolitan area had a population of 1.19 million in 2020 and is the largest metropolitan area in Alabama and List of metropolitan statistical areas, 47th-most populous in the US. Birmingham serves as a major regional economic, medical, and educational hub of the Deep South, Piedmont Atlantic Megaregion, Piedmont, and Appalachian regions. Founded in 1871 during the Reconstruction Era of the United States, Reconstruction era, Birmingham was formed through the merger of three smaller communities, most notably Elyton, Alabama, Elyton. It quickly grew into an industrial and transportation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fairfax Airport
Fairfax Municipal Airport (known as Fairfax Field during World War II) was a Kansas City, Kansas airfield from 1921 that was used during 1935–1949 by the military. Federal land adjacent to the airfield included a WWII B-25 Mitchell plant and modification center and a Military Air Transport Service, Military Air Transport terminal. After being used as a Cold War-era Air Force Base, it was used for airliner servicing by TWA and for automobile and jet fighter aircraft production by General Motors, which built General Motors Fairfax Assembly Plant, a 1985 Fairfax Plant over runways when the municipal airport closed. Background The airport site is on the Goose Island (Kansas) river bend. At Goose Island, the Federal government of the United States, United States Government constructed flood protection levees and walls around the Fairfax Industrial District, as well as three pump houses including two on the airfield that was first used for a 1921 "American Legion air meet". The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kansas City, Kansas
Kansas City (commonly known as KCK) is the third-most populous city in the U.S. state of Kansas and the county seat of Wyandotte County. It is an inner suburb of the older and more populous Kansas City, Missouri, after which it is named. As of the 2020 census, the population of the city was 156,607, making it one of four principal cities in the Kansas City metropolitan area. It is situated at Kaw Point, the junction of the Missouri and Kansas rivers. It is part of a consolidated city-county government known as the "Unified Government". It is the location of the University of Kansas Medical Center and Kansas City Kansas Community College. History In October 1872, "old" Kansas City, Kansas, was incorporated. The first city election was held on October 22 of that year by order of Judge Hiram Stevens of the Tenth Judicial District and resulted in the election of Mayor James Boyle. The mayors of the city after its organization were James Boyle, C. A. Eidemiller, A. S. Orbiso ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
North American P-51 Mustang
The North American Aviation P-51 Mustang is an American long-range, single-seat fighter and fighter-bomber used during World War II and the Korean War, among other conflicts. The Mustang was designed in 1940 by a team headed by James H. Kindelberger of North American Aviation (NAA) in response to a requirement of the British Purchasing Commission. The commission approached NAA to build Curtiss P-40 fighters under license for the Royal Air Force (RAF). Rather than build an old design from another company, NAA proposed the design and production of a more modern fighter. The prototype NA-73X airframe was completed on 9 September 1940, 102 days after contract signing, achieving its first flight on 26 October. The Mustang was designed to use the Allison V-1710 engine without an export-sensitive turbosupercharger or a multi-stage supercharger, resulting in limited high-altitude performance. The aircraft was first flown operationally and very successfully by the RAF and as a t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
North American T-6 Texan
The North American Aviation T-6 Texan is an American single-engined advanced trainer aircraft, which was used to train pilots of the United States Army Air Forces (USAAF), United States Air Force (USAF), United States Navy, Royal Air Force, Royal Canadian Air Force and other air forces of the British Commonwealth during World War II and into the 1970s. Designed by North American Aviation, the T-6 is known by a variety of designations depending on the model and operating air force. The United States Army Air Corps (USAAC) and USAAF designated it as the AT-6, the United States Navy the SNJ, and British Commonwealth air forces the Harvard, the name by which it is best known outside the US. Starting in 1948, the new United States Air Force (USAF) designated it the T-6, with the USN following in 1962. The T-6 Texan remains a popular warbird used for airshow demonstrations and static displays. It has also been used many times to simulate various historical aircraft, including t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
