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Firth Helicopter
The Firth Helicopter was a British helicopter of the early 1950s. Designed to exploit new outrigger rotor technology, the helicopter was abandoned during construction. Design and development Based on the designs of American engineer Fred Landgraf who established the Landgraf Helicopter Corporation in the early years of the Second World War, The Firth Helicopter was more of a "proof-of-concept" aircraft than a true prototype. Firth Helicopters Ltd. had obtained rights to the Landgraf patents regarding a concept which involved twin outrigger pylons carrying three-bladed rotors fitted with ailerons to change direction. The design team of Heenan, Winn and Steele, led by Major J.N. Dundas Heenan who had been previously involved in a similarly unorthodox 1948 aircraft project, the Planet Satellite, utilized the fuselage of the second Satellite prototype, registered ''G-ALXP'' in 1951. The small, streamlined Satellite monocoque fuselage consisted of panels of an extremely light magnesi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Planet Satellite
The Planet Satellite was a British light aircraft of the late 1940s. Designed to exploit new technology, the aircraft was abandoned after two crashes although the innovative fuselage was later incorporated into a helicopter prototype. Design and development The Planet Satellite was designed by Major J. N. (John Nelson) Dundas Heenan, of Heenan, Winn and Steel, consulting engineers, 29 Clarges Street, London, W.1. Dundas had served in the RFC in WW1, retiring as acting Major in 1919 and had then worked at the family firm of Heenan & Froude, leaving in 1935 when the parent company went bankrupt. He served on the British Air Commission to North America in World War II, and communicated many of Frank Whittle's reports to the USAAF, which eventually led to the Bell P-59 Airacomet, the first US jet aircraft. The Satellite was a futuristic looking four-seater aircraft built of Elektron, a 90% magnesium alloy, in a true monocoque 'teardrop' shaped fuselage with no internal reinforce ... [...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 U.S. state, states, a Washington, D.C., federal district, five major unincorporated territories, nine United States Minor Outlying Islands, Minor Outlying Islands, and 326 Indian reservations. The United States is also in Compact of Free Association, free association with three Oceania, Pacific Island Sovereign state, sovereign states: the Federated States of Micronesia, the Marshall Islands, and the Palau, Republic of Palau. It is the world's List of countries and dependencies by area, third-largest country by both land and total area. It shares land borders Canada–United States border, with Canada to its north and Mexico–United States border, 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 List of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
World War II
World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the World War II by country, vast majority of the world's countries—including all of the great powers—forming two opposing military alliances: the Allies of World War II, Allies and the Axis powers. World War II was a total war that directly involved more than 100 million Military personnel, personnel from more than 30 countries. The major participants in the war threw their entire economic, industrial, and scientific capabilities behind the war effort, blurring the distinction between civilian and military resources. Air warfare of World War II, Aircraft played a major role in the conflict, enabling the strategic bombing of population centres and deploying the Atomic bombings of Hiroshima and Nagasaki, only two nuclear weapons ever used in war. World War II was by far the List of wars by death toll, deadliest conflict in hu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Landgraf H-2
The Landgraf H-2 was an American single-seat twin-rotor helicopter designed by Fred Landgraf and built by the Landgraf Helicopter Company of Los Angeles, California. Although awarded a development contract by the United States Army, it was not developed and was overtaken by more advanced designs. Design and development Fred Landgraf formed the Landgraf Helicopter Company in September 1943 to develop and manufacture the H-2. It had an enclosed structure for one pilot and an 85 hp (63 kW) radial engine driving two rotors, each rotor fitted to a short boom on each side of the fuselage. It had a fixed tricycle landing gear. The H-2 first flew on 2 November 1944 and the company was awarded a development contract by the United States Army. It was not developed or bought and the company ceased operations by the end of the 1940s. Unlike conventional helicopters, the H-2 used a tension-rod drive system to drive the side-by-side rotors. Control of blade pitch was also unconventio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1950s British Experimental Aircraft
Year 195 ( CXCV) was a common year starting on Wednesday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Scrapula and Clemens (or, less frequently, year 948 ''Ab urbe condita''). The denomination 195 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 * Emperor Septimius Severus has the Roman Senate deify the previous emperor Commodus, in an attempt to gain favor with the family of Marcus Aurelius. * King Vologases V and other eastern princes support the claims of Pescennius Niger. The Roman province of Mesopotamia rises in revolt with Parthian support. Severus marches to Mesopotamia to battle the Parthians. * The Roman province of Syria is divided and the role of Antioch is diminished. The Romans annexed the Syrian cities of Edessa and Nisibis. Severus re-establish his he ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1950s British Helicopters
Year 195 ( CXCV) was a common year starting on Wednesday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Scrapula and Clemens (or, less frequently, year 948 ''Ab urbe condita''). The denomination 195 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 * Emperor Septimius Severus has the Roman Senate deify the previous emperor Commodus, in an attempt to gain favor with the family of Marcus Aurelius. * King Vologases V and other eastern princes support the claims of Pescennius Niger. The Roman province of Mesopotamia rises in revolt with Parthian support. Severus marches to Mesopotamia to battle the Parthians. * The Roman province of Syria is divided and the role of Antioch is diminished. The Romans annexed the Syrian cities of Edessa and Nisibis. Severus re-establish his ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Transverse Rotor Helicopters
Transverse may refer to: * Transverse engine, an engine in which the crankshaft is oriented side-to-side relative to the wheels of the vehicle * Transverse flute, a flute that is held horizontally * Transverse force (or ''Euler force''), the tangential force that is felt in reaction to any angular acceleration * Transverse mass, a particle physics quantity * Transverse plane, the plane orthogonal to the anteroposterior or oral-aboral axis * Transverse rotors, a type of rotorcraft in which there are two rotors mounted side by side * Transverse wave, a wave that causes a disturbance in the medium perpendicular to the direction it advances * Transverse Island, an island on the east side of Stefansson Bay, off the coast of Enderby Land See also * Transversal (other) * Transversality (other) * {{disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
