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De Havilland Gipsy
The de Havilland Gipsy is a British air-cooled four-cylinder in-line aircraft engine designed by Frank Halford in 1927 to replace the ADC Cirrus in the de Havilland DH.60 Moth light biplane. Initially developed as an upright 5 litre (300 cubic inch) capacity engine, later versions were designed to run inverted with increased capacity and power. The Gipsy went on to become one of the most popular sport aircraft engines of the inter-war period and was the engine of choice for various other light aircraft, trainers, liaison aircraft and air taxis, British as well as foreign, until long past World War II. Apart from helping to establish the de Havilland Aircraft Company as a manufacturer of light aircraft, it also established the company as an engine manufacturer in its own right. Gipsy engines remain in service powering vintage light aircraft. Design and development Just like the ADC Cirrus, the Gipsy was born as a collaboration between aircraft manufacturer Geoffre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
De Havilland
The de Havilland Aircraft Company Limited () was a British aviation manufacturer established in late 1920 by Geoffrey de Havilland at Stag Lane Aerodrome Edgware on the outskirts of north London. Operations were later moved to Hatfield in Hertfordshire. Known for its innovation, de Havilland was responsible for a number of important aircraft, including the Moth biplane which revolutionised aviation in the 1920s; the 1930s Fox Moth, a commercial light passenger aircraft; the wooden World War II Mosquito multirole aircraft; and the pioneering passenger jet airliner Comet. The de Havilland company became a member of the Hawker Siddeley group in 1960, but lost its separate identity in 1963. Later, Hawker Siddeley merged into what is eventually known today as BAE Systems, the British aerospace and defence business. The de Havilland name lives on in De Havilland Canada, which owns the rights to the name and the aircraft produced by de Havilland's former Canadian subsidiary, inc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stroke (engine)
In the context of an internal combustion engine, the term stroke has the following related meanings: * A phase of the engine's cycle (e.g. compression stroke, exhaust stroke), during which the piston travels from top to bottom or vice versa. * The type of power cycle used by a piston engine (e.g. two-stroke engine, four-stroke engine). * "Stroke length", the distance travelled by the piston during each cycle. The stroke length––along with bore diameter––determines the engine's displacement. Phases in the power cycle Commonly used engine phases or strokes (i.e. those used in a four-stroke engine) are described below. Other types of engines can have very different phases. Induction-intake stroke The induction stroke is the first phase in a four-stroke (e.g. Otto cycle or Diesel cycle) engine. It involves the downward movement of the piston, creating a partial vacuum that draws a air-fuel mixture (or air alone, in the case of a direct injection engine) into the combus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spartan Arrow
The Spartan Arrow is a British two-seat biplane aircraft of the early 1930s, built by Spartan Aircraft Limited. History Built as a successor to the company's first design the Simmonds Spartan, the Arrow was a two-seat biplane with a spruce and plywood fuselage. The prototype G-AAWY first flew in May 1930 with Cirrus Hermes II engine. The 13 production aircraft that followed used mainly the de Havilland Gipsy II engine. One aircraft, G-ABBE, was fitted with floats and evaluated as a seaplane in 1931, it was converted back to a landplane and later sold in New Zealand, where it was renumbered as ZK-ACQ. A second aircraft, G-ABHD, was sold to Australia where it was renumbered as VH-UQD. A third aircraft, G-ACHG, was sold to Denmark where it was renumbered as OY-DUK. One aircraft G-ABST was built to test a new air-cooled Napier engine (later knowns as the Javelin). The second prototype G-AAWY was also used by Cirrus Aero Engines as an engine test bed. Production of the Arrow ende ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Southern Martlet
The Southern Martlet was a single-engined, single-seat biplane sports aircraft. Six were built, including the rather different and unsuccessful Metal Martlet. Design and development The Southern Martlet was the first aircraft designed by teams led Frederick George Miles, whose company was Southern Aircraft of Shoreham. It was a modified Avro Baby, differing in the tail unit, undercarriage and engine, the 85 hp A.B.C. Hornet air-cooled flat four. Like the Baby, it was a single-bay staggered tractor biplane, with fixed two-wheel main and tail-skid undercarriage. The undercarriage was a combination of "oleo and coil-spring shock absorbing gear" designed by Basil Henderson of Hendy Aircraft, Shoreham. The prototype ''G-AAII'' made its first public appearance on 30 August 1929 at London Air Park, Hanworth, and proved to be a very manoeuvrable sports machine. Operational history Five production aircraft were built at Shoreham, differing chiefly in the choice of engine. T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Simmonds Spartan
The Simmonds Spartan is a 1920s British two-seat biplane trainer/tourer aircraft built by Simmonds Aircraft Limited. History Not happy with the high cost of manufacturing light aircraft, O.E. Simmonds designed and built a wooden two-seat biplane in 1928. To reduce maintenance costs all four wings and ailerons were the same; this allowed one spare wing to be used in any position. Powered by a Cirrus III, the prototype G-EBYU first flew in time to enter the King's Cup Air Race of 1928. The aircraft was flown to the Berlin Aero Show on 24 October 1928, a non-stop flight of 7 hours and 10 minutes. Production began at Woolston, Hampshire, with the final assembly and test flying at Hamble Aerodrome. Forty-nine aircraft were built, many for export, with New Zealand customers buying the most. At home 12 were delivered to the National Flying Services for use as trainers. Three aircraft were operated on floats in Fiji. Although not as famous as other aircraft of the period, one aircraft ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Breda Ba
Breda () is a city and municipality in the southern part of the Netherlands, located in the province of North Brabant. The name derived from ''brede Aa'' ('wide Aa' or 'broad Aa') and refers to the confluence of the rivers Mark and Aa. Breda has 185,072 inhabitants on 13 September 2022 and is part of the Brabantse Stedenrij; it is the ninth largest city/municipality in the country, and the third largest in North Brabant after Eindhoven and Tilburg. It is equidistant between Rotterdam and Antwerp. As a fortified city, it was of strategic military and political significance. Although a direct Fiefdom of the Holy Roman Emperor, the city obtained a municipal charter; the acquisition of Breda, through marriage, by the House of Nassau ensured that Breda would be at the centre of political and social life in the Low Countries. Breda had a population of in ; the metropolitan area had a population of . History In the 11th century, Breda was a direct fief of the Holy Roman Emperor, it ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blackburn Bluebird IV
The Blackburn Bluebird IV was a single-engine biplane light trainer/tourer biplane with side-by-side seating designed by the British aviation manufacturer Blackburn Aircraft. It was an all-metal development of the wooden Blackburn Bluebird I, II and III aircraft. The Blackburn IV was developed as a refinement of the preceding members of the Bluebird series; in addition to its all-metal airframe, it was noticeably more streamlined and its structure was simplified as to more readily facilitate its construction. Individual areas such as the tail unit and undercarriage were extensively revised. Conventional controls were used wherever practical. The Bluebird IV was a larger and heavier aircraft than its predecessors and could be fitted with various engines as standard, such as the de Havilland Gipsy, ADC Cirrus, and Cirrus Hermes. The first prototype performed its maiden flight on 23 February 1929. One month prior to the first flight, the prototype Bluebird IV had already been sol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bartel BM-4
The Bartel BM.4 was a Polish biplane primary trainer aircraft used from 1929 to 1939 by the Polish Air Force and Polish civilian aviation, manufactured in the Samolot factory in Poznań. It was the first plane of Polish design put into production. Design and development The aircraft was designed by Ryszard Bartel in the Samolot factory in Poznań. It was a development of the Bartel BM.2, which did not advance beyond the prototype stage. Thanks to a lower weight than the BM.2, it could use lower-powered engines, so its performance was actually improved. Its performance was also superior to the Hanriot H.28, used by the Poles and licence-built by Samolot. The BM.4 prototype was flown on 20 December 1927 in Poznań. It had good handling and stability and was resistant to spinning. A distinguishing feature of all Bartels was an upper wing of a shorter span, because lower and upper wing halves were interchangeable (i.e. the lower wingspan included the width of the fuselage). Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Avro Avian
The Avro Avian was a series of British light aircraft designed and built by Avro in the 1920s and 1930s. While the various versions of the Avian were sound aircraft, they were comprehensively outsold by the de Havilland Moth and its descendants. Design and development The Avro 581 Avian prototype was designed and built to compete in the Lympne light aircraft trials at Lympne Aerodrome in September 1926. Its wooden fuselage was based on that of the Avro 576 autogyro, but it was fitted with conventional biplane wings and powered by a 70 hp (50 kW) Armstrong Siddeley Genet engine. It performed well at the trials, but was eliminated due to engine failure. In early 1927 it was re-engined with an ADC Cirrus engine as the Type 581A and sold to Bert Hinkler. Production aircraft were designated Type 594 and were built in a number of versions, mainly powered by Cirrus engines.Jackson 1990, pp. 249, 256. A version with a welded steel tube fuselage was produced in 1929 as the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
De Havilland Gipsy II
The de Havilland Gipsy is a British air-cooled four-cylinder in-line aircraft engine designed by Frank Halford in 1927 to replace the ADC Cirrus in the de Havilland DH.60 Moth light biplane. Initially developed as an upright 5 litre (300 cubic inch) capacity engine, later versions were designed to run inverted with increased capacity and power. The Gipsy went on to become one of the most popular sport aircraft engines of the inter-war period and was the engine of choice for various other light aircraft, trainers, liaison aircraft and air taxis, British as well as foreign, until long past World War II. Apart from helping to establish the de Havilland Aircraft Company as a manufacturer of light aircraft, it also established the company as an engine manufacturer in its own right. Gipsy engines remain in service powering vintage light aircraft. Design and development Just like the ADC Cirrus, the Gipsy was born as a collaboration between aircraft manufacturer Geoffre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
De Havilland Tiger Moth
The de Havilland DH.82 Tiger Moth is a 1930s British biplane designed by Geoffrey de Havilland and built by the de Havilland Aircraft Company. It was operated by the Royal Air Force (RAF) and other operators as a primary trainer aircraft. In addition to the type's principal use for ''ab initio'' training, the Second World War had RAF Tiger Moths operating in other capacities, including maritime surveillance and defensive anti-invasion preparations; some aircraft were even outfitted to function as armed light bombers. The Tiger Moth remained in service with the RAF until it was replaced by the de Havilland Chipmunk during the early 1950s. Many of the military surplus aircraft subsequently entered into civilian operation. Many nations have used the Tiger Moth in both military and civilian applications, and it remains in widespread use as a recreational aircraft. It is still occasionally used as a primary training aircraft, particularly for those pilots wanting to gain exper ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
