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Brewster XA-32
The Brewster XA-32 was an American attack aircraft, a mid-wing type with an internal bomb bay. The prototype had the R-2800 engine, but it could take the intended R-4360 powerplant. After a dismal set of test results, the XA-32 did not enter production. Design and development Brewster Aeronautical Corporation's F2A Buffalo won the first Navy monoplane fighter competition over Grumman's entry. The company continued to design and produce lackluster aircraft, and the XA-32, despite a sound layout, became a compendium of management-induced faults. Missing production deadline dates and constant changes to the design jeopardized a promising design (at least on paper). Initially designed in 1941, the XA-32 was grossly overweight, at almost , similar to the Douglas A-20 Havoc. The drag induced by its bulbous shape was amplified by careless detail design, which left it festooned with bumps and lumps. One disastrous characteristic was that the exhaust scoops that ringed the cowling nearly ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States
The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territories, nine Minor Outlying Islands, and 326 Indian reservations. The United States is also in free association with three Pacific Island sovereign states: the Federated States of Micronesia, the Marshall Islands, and the Republic of Palau. It is the world's third-largest country by both land and total area. It shares land borders with Canada to its north and with Mexico to its south and has maritime borders with the Bahamas, Cuba, Russia, and other nations. With a population of over 333 million, it is the most populous country in the Americas and the third most populous in the world. The national capital of the United States is Washington, D.C. and its most populous city and principal financial center is New York City. Paleo-Americ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brewster Aeronautical Corporation
The Brewster Aeronautical Corporation was an American defense contractor that operated from the 1930s until the end of World War II. History Originally a carriage builder, Brewster & Co.'s involvement in aviation began in the aftermath of World War I, when it started manufacturing hulls for Loening amphibians. By 1928, it was building floats for the Vought O2U Corsair. In 1932, James Work, an aeronautical engineer, bought the division for US$30,000 and created the Brewster Aeronautical Corporation. Brewster started out making seaplane floats and wing panels, but with the hire of chief engineer Dayton Brown it embarked on its own designs. It operated three aircraft plants, at the Brewster Building in Long Island City, New York, Newark, New Jersey, and, in 1941, in Warminster Township, Pennsylvania, which was then known as NAS Johnsville. Brown's first design, in 1934, was a two-seat scout-bomber, the Brewster SBA, which first flew in 1936; subsequently the Naval Aircraft ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Army Air Force
The United States Army Air Forces (USAAF or AAF) was the major land-based aerial warfare service component of the United States Army and ''de facto'' aerial warfare service branch of the United States during and immediately after World War II (1941–1945). It was created on 20 June 1941 as successor to the previous United States Army Air Corps and is the direct predecessor of the United States Air Force, today one of the six armed forces of the United States. The AAF was a component of the United States Army, which on 2 March 1942 was divided functionally by executive order into three autonomous forces: the Army Ground Forces, the United States Army Services of Supply (which in 1943 became the Army Service Forces), and the Army Air Forces. Each of these forces had a commanding general who reported directly to the Army Chief of Staff. The AAF administered all parts of military aviation formerly distributed among the Air Corps, General Headquarters Air Force, and the ground ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
F2A Buffalo
The Brewster F2A Buffalo is an American fighter aircraft which saw service early in World War II. Designed and built by the Brewster Aeronautical Corporation, it was one of the first U.S. monoplanes with an arrestor hook and other modifications for aircraft carriers. The Buffalo won a competition against the Grumman F4F Wildcat in 1939 to become the U.S. Navy's first monoplane fighter aircraft. Although superior to the Grumman F3F biplane it replaced, and the early F4Fs,Wheeler 1992, p. 58. the Buffalo was largely obsolete when the United States entered the war, being unstable and overweight, especially when compared to the Japanese Mitsubishi A6M Zero. Several nations, including Finland, Belgium, Britain and the Netherlands, ordered the Buffalo. The Finns were the most successful with their Buffalos, flying them in combat against early Soviet fighters with excellent results.Ethell 1995, p. 212. During the Continuation War of 1941–1944, the B-239s (de-navalized F2A-1s) operated ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Douglas A-20 Havoc
The Douglas A-20 Havoc (company designation DB-7) is an American medium bomber, attack aircraft, Intruder (air combat), night intruder, night fighter, and reconnaissance aircraft of World War II. Designed to meet an Army Air Corps requirement for a bomber, it was ordered by France for their air force before the USAAC decided it would also meet their requirements. French DB-7s were the first to see combat; after the fall of France, the bomber served with the Royal Air Force under the British military aircraft designation systems#Names, service name Boston. From 1941, night fighter and Intruder (air combat), intruder versions were given the service name Havoc. In 1942 USAAF A-20s saw combat in North Africa. It served with several Allies of World War II, Allied air forces, principally the United States Army Air Forces (USAAF), the Soviet Air Forces (''VVS''), Soviet Naval Aviation (''AVMF''), and the Royal Air Force (RAF) of the United Kingdom. A total of 7,478 aircraft were built, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pratt & Whitney R-2800
The Pratt & Whitney R-2800 Double Wasp is an American twin-row, 18-cylinder, air-cooled radial aircraft engine with a displacement of , and is part of the long-lived Wasp family of engines. The R-2800 saw widespread use in many important American aircraft during and after World War II. During the war years, Pratt & Whitney continued to develop new ideas to upgrade the engine, including water injection for takeoff in cargo and passenger planes and to give emergency power in combat. Design and development First run in 1937, near the time that the larger competing 18-cylinder Wright Duplex-Cyclone's development had been started in May of that year, the displacement R-2800 was first-flown by 1940, one year before the Duplex-Cyclone. The Double Wasp was more powerful than the world's only other modern 18-cylinder engine, the Gnome-Rhône 18L of . The Double Wasp was much smaller in displacement than either of the other 18-cylinder designs, and heat dissipation was a gr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pratt & Whitney R-4360 Wasp Major
The Pratt & Whitney R-4360 Wasp Major is an American 28-cylinder four-row radial piston aircraft engine designed and built during World War II. First run in 1944, at , it is the largest-displacement aviation piston engine to be mass-produced in the United States, and at the most powerful. It was the last of the Pratt & Whitney Wasp family, and the culmination of its maker's piston engine technology. The war was over before it could power airplanes into combat. It powered many of the last generation of large piston-engined aircraft before turbojets, but was supplanted by equivalent (and superior) powered turboprops (such as the Allison T56). Its main rival was the twin-row, 18-cylinder, nearly displacement, up to Wright R-3350 Duplex-Cyclone, first run some seven years earlier (May 1937). Design and development The R-4360 was a 28-cylinder four-row air-cooled radial engine. Each row of seven air-cooled cylinders possessed a slight angular offset from the previous, forming ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Buffeting
Aeroelasticity is the branch of physics and engineering studying the interactions between the inertial, elastic, and aerodynamic forces occurring while an elastic body is exposed to a fluid flow. The study of aeroelasticity may be broadly classified into two fields: ''static aeroelasticity'' dealing with the static or steady state response of an elastic body to a fluid flow; and ''dynamic aeroelasticity'' dealing with the body's dynamic (typically vibrational) response. Aircraft are prone to aeroelastic effects because they need to be lightweight and withstand large aerodynamic loads. Aircraft are designed to avoid the following aeroelastic problems: # divergence where the aerodynamic forces increase the angle of attack of a wing which further increases the force; # control reversal where control activation produces an opposite aerodynamic moment that reduces, or in extreme cases, reverses the control effectiveness; and # flutter which is the uncontained vibration that can lea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pratt & Whitney R-2800-37 Double Wasp
The Pratt & Whitney R-2800 Double Wasp is an American twin-row, 18-cylinder, air-cooled radial aircraft engine with a displacement of , and is part of the long-lived Wasp family of engines. The R-2800 saw widespread use in many important American aircraft during and after World War II. During the war years, Pratt & Whitney continued to develop new ideas to upgrade the engine, including water injection for takeoff in cargo and passenger planes and to give emergency power in combat. Design and development First run in 1937, near the time that the larger competing 18-cylinder Wright Duplex-Cyclone's development had been started in May of that year, the displacement R-2800 was first-flown by 1940, one year before the Duplex-Cyclone. The Double Wasp was more powerful than the world's only other modern 18-cylinder engine, the Gnome-Rhône 18L of . The Double Wasp was much smaller in displacement than either of the other 18-cylinder designs, and heat dissipation was a greate ... [...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] |
Machine Gun
A machine gun is a fully automatic, rifled autoloading firearm designed for sustained direct fire with rifle cartridges. Other automatic firearms such as automatic shotguns and automatic rifles (including assault rifles and battle rifles) are typically designed more for firing short bursts rather than continuous firepower, and are not considered true machine guns. As a class of military kinetic projectile weapon, machine guns are designed to be mainly used as infantry support weapons and generally used when attached to a bipod or tripod, a fixed mount or a heavy weapons platform for stability against recoils. Many machine guns also use belt feeding and open bolt operation, features not normally found on other infantry firearms. Machine guns can be further categorized as light machine guns, medium machine guns, heavy machine guns, general purpose machine guns and squad automatic weapons. Similar automatic firearms of caliber or more are classified as autocannons, rat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brewster Aircraft
Brewster may refer to: People *Brewster (surname) *Brewster Kahle (born 1960), American computer technologist *Brewster H. Shaw (born 1945), American astronaut Places *Brewster Park (Enniskillen), Northern Ireland *Brewster (crater), The Moon United States *Brewster, Florida *Brewster, Kansas *Brewster, Massachusetts ** Brewster (CDP), Massachusetts *Brewster, Minnesota *Brewster, Nebraska *Brewster, New York **Brewster (Metro-North station) *Brewster Hill, New York * Brewster, Ohio *Brewster, Washington *Brewster County, Texas *Brewster Creek, in Akron, Ohio Islands in Boston Harbor *Great Brewster Island *Little Brewster Island *Middle Brewster Island Structures *Brewster-Douglass Housing Projects, in Detroit, Michigan, USA *Brewster Hospital, in Duval County, Florida, USA Schools *Brewster Academy, a boarding school in New Hampshire, USA *Brewster High School (Brewster, Washington), USA *Brewster School District (other), several Business * Brewster & Co., American ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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