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Cierva W.9
The Cierva W.9 was a British 1940s experimental helicopter with a three-blade tilting-hub controlled main rotor, and torque compensation achieved using a jet of air discharged from the rear port side of the fuselage. Development In 1943, primary investor G & J Weir Ltd. revived the moribund Cierva Autogiro Company to develop an experimental helicopter to List of Air Ministry specifications, Air Ministry Specification E.16/43. The W.9 was to investigate James George Weir, James G. Weir's contention that a powered tilting hub-controlled Helicopter rotor, rotor with automatic Helicopter flight controls, collective pitch control, and torque reaction control using jet efflux, was both safer and more efficient than the Sikorsky R-4 helicopter fitted with manually controlled main rotor cyclic and collective pitch and the anti-torque tail rotor system. The W.9 was completed late in 1944 in aviation, 1944 and assigned United Kingdom military aircraft serials, serial ''PX203''. It was dama ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cierva Autogiro Company, Ltd
The Cierva Autogiro Company was a British firm established in 1926 to develop the autogyro. The company was set up to further the designs of Juan de la Cierva, a Spanish engineer and pilot, with the financial backing of James George Weir, a Scottish industrialist and aviator. History Juan de la Cierva's first British-built autogyro was the Cierva C.8, C.8 design. It and some other designs were built in conjunction with Avro. The pre-war Cierva C.30 proved popular. Nearly 150 were built under licence in the United Kingdom by Avro, in Germany by Focke-Wulf, and in France by Lioré-et-Olivier. On 9 December 1936, Cierva was killed in the 1936 KLM Croydon accident, Croydon KLM airliner accident when the aircraft in which he was a passenger crashed after taking off in fog. Dr. James Allan Jamieson Bennett was promoted to Chief Technical Officer of the company and remained in the position until leaving in 1939. In addition to making important contributions to autogyro controls while at ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Meccano Magazine
''Meccano Magazine'' was an English monthly hobby magazine published by Meccano Ltd between 1916 and 1963, and by other publishers between 1963 and 1981. The magazine was initially created for Meccano builders, but it soon became a general hobby magazine aimed at "boys of all ages". History The magazine was launched by Frank Hornby, the inventor of Meccano, as a bi-monthly publication in 1916 in the United States as "Meccano Engineer", and was a month ahead of the UK issue. The first copies were given away free but in 1918 readers had to pay two pence for postage for four issues. In 1917 and again in 1932 Hornby published a history of Meccano, its manufacture, and marketing in the magazine. In 1919 it doubled its size to eight pages and now cost one penny. New Meccano parts were advertised for the first time in 1920 and in 1922 the magazine became a monthly publication. From 1921, the magazine was edited by Ellison Hawks who worked at Meccano as an advertising manager. From the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NOTAR Helicopters
NOTAR ("no tail rotor") is a helicopter system which avoids the use of a tail rotor. It was developed by McDonnell Douglas Helicopter Systems (through their acquisition of Hughes Helicopters). The system uses a fan inside the tail boom to build a high volume of low-pressure air, which exits through two slots and creates a boundary layer flow of air along the tailboom utilizing the Coandă effect. The boundary layer changes the direction of airflow around the tailboom, creating thrust opposite the motion imparted to the fuselage by the torque effect of the main rotor. Directional yaw control is gained through a vented, rotating drum at the end of the tailboom, called the direct jet thruster. Advocates of NOTAR believe the system offers quieter and safer operation over a traditional tail rotor. Development The use of directed air to provide anti-torque control had been tested as early as 1945 in the British Cierva W.9. During 1957, a Spanish prototype designed and built by Aer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cierva Aircraft
The Cierva Autogiro Company was a British firm established in 1926 to develop the autogyro. The company was set up to further the designs of Juan de la Cierva, a Spanish engineer and pilot, with the financial backing of James George Weir, a Scottish industrialist and aviator. History Juan de la Cierva's first British-built autogyro was the C.8 design. It and some other designs were built in conjunction with Avro. The pre-war Cierva C.30 proved popular. Nearly 150 were built under licence in the United Kingdom by Avro, in Germany by Focke-Wulf, and in France by Lioré-et-Olivier. On 9 December 1936, Cierva was killed in the Croydon KLM airliner accident when the aircraft in which he was a passenger crashed after taking off in fog. Dr. James Allan Jamieson Bennett was promoted to Chief Technical Officer of the company and remained in the position until leaving in 1939. In addition to making important contributions to autogyro controls while at Cierva Autogyro, Bennett carrie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1940s British Helicopters
Year 194 ( CXCIV) was a common year starting on Tuesday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Septimius and Septimius (or, less frequently, year 947 ''Ab urbe condita''). The denomination 194 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 and Decimus Clodius Septimius Albinus Caesar become Roman Consuls. * Battle of Issus: Septimius Severus marches with his army (12 legions) to Cilicia, and defeats Pescennius Niger, Roman governor of Syria. Pescennius retreats to Antioch, and is executed by Severus' troops. * Septimius Severus besieges Byzantium (194–196); the city walls suffer extensive damage. Asia * Battle of Yan Province: Warlords Cao Cao and Lü Bu fight for control over Yan Province; the battle lasts for over 100 days ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1940s British Experimental Aircraft
Year 194 ( CXCIV) was a common year starting on Tuesday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Septimius and Septimius (or, less frequently, year 947 '' Ab urbe condita''). The denomination 194 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 and Decimus Clodius Septimius Albinus Caesar become Roman Consuls. * Battle of Issus: Septimius Severus marches with his army (12 legions) to Cilicia, and defeats Pescennius Niger, Roman governor of Syria. Pescennius retreats to Antioch, and is executed by Severus' troops. * Septimius Severus besieges Byzantium (194–196); the city walls suffer extensive damage. Asia * Battle of Yan Province: Warlords Cao Cao and Lü Bu fight for control over Yan Province; the battle lasts for over 1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NOTAR
NOTAR ("no tail rotor") is a helicopter system which avoids the use of a tail rotor. It was developed by McDonnell Douglas Helicopter Systems (through their acquisition of Hughes Helicopters). The system uses a fan inside the tail boom to build a high volume of low-pressure air, which exits through two slots and creates a boundary layer flow of air along the tailboom utilizing the Coandă effect. The boundary layer changes the direction of airflow around the tailboom, creating thrust opposite the motion imparted to the fuselage by the torque effect of the main rotor. Directional yaw control is gained through a vented, rotating drum at the end of the tailboom, called the direct jet thruster. Advocates of NOTAR believe the system offers quieter and safer operation over a traditional tail rotor. Development The use of directed air to provide anti-torque control had been tested as early as 1945 in the British Cierva W.9. During 1957, a Spanish prototype designed and built by Aerot ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
De Havilland Gipsy Queen 31
The de Havilland Gipsy Queen is a British six-cylinder aero engine of capacity that was developed in 1936 by the de Havilland Engine Company. It was developed from the de Havilland Gipsy Six for military aircraft use. Produced between 1936 and 1950 Gipsy Queen engines still power vintage de Havilland aircraft types today. Variants ''Note:'' ;Gipsy Queen I :(1936) , military version of Gipsy Six II. Splined crankshaft, but intended for fix-pitch airscrews fitted with an adapter. No fittings for a VP airscrew fitted. Very limited production. ;Gipsy Queen II :(1936) , military version of the Gipsy Six Series II. Strengthened crankcase. Splined crankshaft for V/P airscrew. ;Gipsy Queen III :(1940) , military version of Gipsy Six, strengthened crankcase, tapered crankshaft for fixed-pitch;-1,358 built. Most of these engines were fitted with a very basic top-cover, as per the early Gipsy-Six, with no accessory drives at the rear of the top-cover whatsoever. ;Gipsy Queen IV :(1941) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Saunders-Roe Skeeter
The Saunders-Roe Skeeter was a two-seat training and scout helicopter that was developed and produced by British manufacturer Saunders-Roe ("Saro") of Cowes and Southampton, in the United Kingdom. Work on what would become the Skeeter had been commenced by the Cierva Autogiro Company as the Cierva W.14. Following Saunders-Roe's takeover of Cierva's helicopter development contracts, it was decided to continue its projects, including the Skeeter. Despite an initial preference for the rival Fairey Ultra-light Helicopter, which had already been ordered, there was a reversal of fortune with interest from the Bundeswehr in the potential procurement of a large number of Skeeters. This led to the British order for the Ultra-light Helicopter being cancelled and the Skeeter effectively taking its place, which also served to guarantee an export order from Germany. During the late 1950s, the Skeeter entered service with the British Army Air Corps, the German Navy, and the German Army. It ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radlett Airshow
Radlett is a village in Hertfordshire, England, between Elstree and St Albans on Watling Street, with a population of 8,042. It is in the council district of Hertsmere in the south of the county, and is covered by two wards; Aldenham East and Aldenham West. It is located inside the M25 motorway. Locality Radlett lies in the valley of Tykes Water, a stream that runs north from Aldenham Reservoir to the River Colne. Now entirely surrounded by the Metropolitan Green Belt, it is subject to significant 'infill' development and there is pressure to relax the Green Belt restrictions. Radlett is located 14 miles (22.5 km) north west of the centre of London. It is one of the wealthiest places in Britain and the second most expensive town to buy a house outside London. The town contains many substantial detached houses with large gardens. In the older centre there are also a few streets with Victorian semi detached and terraced houses. Watling Street, which is the main road thro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Society Of British Aerospace Companies
The Society of British Aerospace Companies, formerly Society of British Aircraft Constructors, known as SBAC, was the UK's national trade association representing companies supplying civil air transport, aerospace defence, homeland security and space. As of October 2009 SBAC merged with the Defence Manufacturers Association and the Association of Police and Public Security Suppliers to form the ADS Group. The SBAC organises the Farnborough Airshow. Representation With its regional partners, SBAC represents over 2,600 companies, assisting them in developing new business globally, facilitating innovation and competitiveness and providing regulatory services in technical standards and accreditation. Inside the organisation is the British Aviation Group and the UK Space Agency. History Formation On 29 March 1915 a number of British aircraft manufacturers and industrialists met to arrange a standards body and production pooling system known as the Society of British Aircraft Con ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Meccano Ltd
Meccano Ltd was a British toy manufacturing company, established in 1908 by Frank Hornby in Liverpool, England, to manufacture and distribute Meccano and other model toys and kits created by the company. During the 1920s and 1930s it became the biggest toy manufacturer in the United Kingdom and produced three of the most popular lines of toys in the twentieth century: Meccano, Hornby Trains and Dinky Toys. Financial problems beset the company in the early 1960s and Meccano Ltd was taken over by Lines Bros Ltd in 1964. History :''See Frank Hornby for the events leading up to the formation of Meccano Ltd''. In 1901 Frank Hornby, a clerk from Liverpool, England, invented a new construction toy called "Mechanics Made Easy", which soon became known as Meccano. To manufacture and distribute Meccano, Hornby needed to raise capital to invest in factory and plant, and this resulted in the establishment of Meccano Ltd in 1908, with Hornby as the sole proprietor. A factory was acquired in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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