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Boulton-Paul Sidestrand
The Boulton Paul P.29 Sidestrand was a twin-engine biplane medium bomber of the Royal Air Force. Designed for daylight operations, it was manoeuvrable and provided with three defensive gun positions. Named after a village on the Norfolk coast near Boulton & Paul's factory in Norwich, the Sidestrand first flew in 1926 and entered service in 1928. It remained in service until 1936, equipping No. 101 Squadron RAF. It was an agile and relatively fast aircraft that was capable of aerobatic manoeuvres such as loops, rolls and spins.Taylor 1969, p. 325. Design and development Boulton & Paul Ltd of Norwich built a series of twin-engined biplanes starting with the Bourges of 1918, which although not ordered into production, had demonstrated excellent performance and manoeuvrability, followed by the 'all-metal' Bolton of 1922 and the smaller Bugle of 1923. In 1924, the Air Ministry issued Specification 9/24 for an all-metal, twin-engined medium bomber, and Boulton & Paul's offering, desi ... [...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] |
Boulton & Paul Bolton
The Boulton & Paul P.15 Bolton was a one-off experimental twin-engined reconnaissance biplane ordered by the Air Ministry to sustain Boulton & Paul's development of steel-framed aircraft early in the 1920s. It was the RAF's first metal-framed aircraft. Design and development Just after the end of the World War I the Air Ministry were keen to explore the use of all-steel airframes, partly because during the war spruce stocks had been seriously reduced. They were aware of Boulton & Paul's all-steel-framed, though probably unflown P.10 and the claims of the company designer, John North that such aircraft could be 10% lighter than their wooden-framed equivalents. They therefore issued specification 4/20 for a steel-framed version of the Boulton Paul Bourges twin-engined reconnaissance bomber and ordered one prototype, so that Boulton & Paul could continue to develop such structures. The P.15 Bolton was the result. Despite its later type number, the Bolton was ordered and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leading-edge Slat
Slats are aerodynamic surfaces on the leading edge of the wing of a fixed-wing aircraft which, when deployed, allow the wing to operate at a higher angle of attack. A higher coefficient of lift is produced as a result of angle of attack and speed, so by deploying slats an aircraft can fly at slower speeds, or take off and land in shorter distances. They are used during takeoff and landing or while performing low speed maneuvers which may take the aircraft close to a stall, they are retracted in normal flight to minimize drag. Slats are one high-lift device used on high speed turbojet aircraft, trailing edge flap systems running along the trailing edge of the wing are common on all aircraft. Types Types include: ;Automatic: The spring-loaded slat lies flush with the wing leading edge, held in place by the force of the air acting on them. As the aircraft slows down, the aerodynamic force is reduced and the springs extend the slats. Sometimes referred to as Handley-Page sla ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Frise Aileron
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 roll (or movement around the aircraft's longitudinal axis), which normally results in a change in flight path due to the tilting of the 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 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 First World War compelled the U.S. Government to legislate a legal resolution. A much earlier aileron concept was patented in 1868 by British scientist Matthew Piers Watt Boult ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Servo Tab
__NOTOC__ A servo tab is a small hinged device installed on an aircraft control surface to assist the movement of the control surfaces. Introduced by the German firm Flettner, servo tabs were formerly known as Flettner tabs. Servo tabs are not true servomechanisms, as they do not employ negative feedback to keep the control surfaces in a desired position; they only provide a mechanical advantage to the pilot. Servo tabs A servo tab, or balance tab, moves in the direction opposite to the desired movement of the control surface. It deflects airflow, generating force on the whole control surface in the desired direction. The tab has a leverage advantage, being located well aft of the control surface hinge line, and thus its airflow deflection moves the control surface in the opposite direction, overcoming the resistance generated by the airflow deflection of the control surface. This has the effect of reducing the control force required from the pilot to move the controls. In som ... [...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] |
Bristol Jupiter
The Bristol Jupiter was a British nine-cylinder single-row piston radial engine built by the Bristol Aeroplane Company. Originally designed late in World War I and known as the Cosmos Jupiter, a lengthy series of upgrades and developments turned it into one of the finest engines of its era. The Jupiter was widely used on many aircraft designs during the 1920s and 1930s. Thousands of Jupiters of all versions were produced, both by Bristol and abroad under licence. A turbo-supercharged version of the Jupiter known as the Orion suffered development problems and only a small number were produced. The "Orion" name was later re-used by Bristol for an unrelated turboprop engine. Design and development The Jupiter was designed during World War I by Roy Fedden of Brazil Straker and later Cosmos Engineering. The first Jupiter was completed by Brazil Straker in 1918 and featured three carburettors, each one feeding three of the engine's nine cylinders via a spiral deflector housed ins ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Inline Engine (aviation)
In aviation, an inline engine is a reciprocating engine with banks of cylinders, one behind another, rather than rows of cylinders, with each bank having any number of cylinders, although more than six is uncommon. The major reciprocating-engine alternative configuration is the radial engine, where the cylinders are placed in a circular or "star" arrangement. The term "inline" is used somewhat differently for aircraft engines than automotive engines. For automotive engines, the term ‘inline’ refers only to straight engines (those with a single bank of cylinders). But for aircraft, ‘inline’ can also refer to engines which are not of the straight configuration, such as V, H, or horizontally opposed. Inline engine configurations ;Straight: Engines with a single bank of cylinders which can be arranged at any angle but typically upright or inverted, (e.g. upright ADC Cirrus, inverted de Havilland Gipsy Major). ; V:Engines with two banks of cylinders with less than 180° betwe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Napier Lion
The Napier Lion is a 12-cylinder, petrol-fueled 'broad arrow' W12 configuration aircraft engine built by D. Napier & Son from 1917 until the 1930s. A number of advanced features made it the most powerful engine of its day and kept it in production long after other contemporary designs had been superseded. It is particularly well known for its use in a number of racing designs, for aircraft, boats and cars. Design and development Early in the First World War, Napier were contracted to build aero engines to designs from other companies, initially a Royal Aircraft Factory model and then Sunbeams. Both engines proved to be unreliable and in 1916 Napier decided to design an engine with high power, light weight and low frontal area. Napier's engineers laid out the engine with its 12 cylinders in what they called a "broad arrow"—three banks of four cylinders sharing a common crankcase. This suggested the design's first name, the Triple-Four. The configuration is also known as a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Samuel Hoare, 1st Viscount Templewood
Samuel John Gurney Hoare, 1st Viscount Templewood, (24 February 1880 – 7 May 1959), more commonly known as Sir Samuel Hoare, was a senior British Conservative politician who served in various Cabinet posts in the Conservative and National governments of the 1920s and 1930s. Hoare was Secretary of State for Air during most of the 1920s. As Secretary of State for India in the early 1930s, he authored the Government of India Act 1935, which granted self-government at a provincial level to India. He was most famous for serving as Foreign Secretary in 1935, when he authored the Hoare–Laval Pact with French Prime Minister Pierre Laval. This partially recognised the Italian conquest of Abyssinia (modern Ethiopia) and Hoare was forced to resign by the ensuing public outcry. In 1936 he returned to the Cabinet as First Lord of the Admiralty, then served as Home Secretary from 1937 to 1939 and was again briefly Secretary of State for Air in 1940. He was seen as a leading " appea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Secretary Of State For Air
The Secretary of State for Air was a Secretary of State (United Kingdom), secretary of state position in the British government, which existed from 1919 to 1964. The person holding this position was in charge of the Air Ministry. The Secretary of State for Air was supported by the Under-Secretary of State for Air. History The position was created on 10 January 1919 to manage the Royal Air Force. In 1946, the three posts of Secretary of State for War, First Lord of the Admiralty, and Secretary of State for Air became formally subordinated to that of Minister of Defence (UK), Minister of Defence, which had itself been created in 1940 for the co-ordination of defence and security issues. On 1 April 1964, the Air Ministry was incorporated into the newly-created united Ministry of Defence (United Kingdom), Ministry of Defence, and the position of Secretary of State for Air was abolished. List of leaders Notes {{notelist External linksHansard – Secretary of State for Air ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John Dudley North
John Dudley North (1893–1968), CBE, HonFRAeS, MIMechE, was Chairman and Managing Director of Boulton Paul Aircraft. Born in 1893 and educated at Bedford School, North became Chief Engineer for Claude Graham-White of the Grahame-White Aviation Co. Ltd., before the onset of World War I. This was a very responsible post for a young man in a young company within a fledgling and vital industry. He moved on in 1915 to become superintendent of the aviation department of Austin Motor Company. In 1917 he joined Boulton Paul in Norwich and commenced his long association with the company and its aircraft division, Boulton Paul Aircraft. Mr North rose to the position of managing director of Boulton Paul Aircraft and was also the company’s chief engineer. He retired in 1954. During North’s time with Boulton Paul he was involved in the design of many aircraft, not least the Overstrand, Sidestrand, Defiant and the R101 airship, of which the company built the hull. In 1941 North was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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