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Silence Twister
The Silence Twister is a German ultralight designed by Silence Aircraft for amateur construction, either from plans or kits. The prototype first flew on 30 September 2000. Design and development The Twister is a single-seat low-wing monoplane with elliptical wings and tailplane. It has a retractable conventional landing gear with a fixed tailwheel. The design drew inspiration from the Supermarine Spitfire, and the shapes of the Twister's wings, fin and tailplane all recall the famous World War II fighter. Designed to take engines up to , the prototype was fitted with a single-rotor MidWest Wankel engine. This compact rotary motor allowed a sleek engine cowling, but the engine was rejected and production aircraft use Jabiru 2200 or ULPower UL260i engines. An electric aircraft version was under development in 2010. Propeller The Twister prototype was fitted with Silence Aircraft's own automatic variable-pitch propeller called the " VProp". The LAA have yet to allow the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shuttleworth Collection
The Shuttleworth Collection is a working aeronautical and automotive collection located at the Old Warden Aerodrome, Old Warden in Bedfordshire, England. It is the oldest in the world and one of the most prestigious, due to the variety of old and well-preserved aircraft. History The collection was founded in 1928 by aviator Richard Ormonde Shuttleworth. While flying a Fairey Battle at night on 2 August 1940, Shuttleworth fatally crashed. His mother, in 1944, formed the Richard Ormonde Shuttleworth Remembrance Trust "for the teaching of the science and practice of aviation and of afforestation and agriculture." Collection Restoration and maintenance work is carried out by a staff of 12 full-time and many volunteer engineers. These volunteers are all members of the 3,000-strong Shuttleworth Veteran Aeroplane Society (SVAS). These dedicated enthusiasts are crucial to the preservation and restoration of the collection. In addition to the aircraft, the collection houses ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electric Aircraft
An electric aircraft is an aircraft powered by electricity. Electric aircraft are seen as a way to reduce the environmental effects of aviation, providing zero emissions and quieter flights. Electricity may be supplied by a variety of methods, the most common being batteries. Most have electric motors driving propellers or turbines. Crewed flights in an electrically powered airship go back to the 19th century, and to 1917 for a tethered helicopter. Electrically powered model aircraft have been flown at least since the 1970s, preceding the small unmanned aerial vehicles (UAV) or drones used today. Small UAS could be used for parcel deliveries, and larger ones for long-endurance applications: aerial imagery, surveillance, telecommunications. The first crewed free flight by an electrically powered aeroplane, the MB-E1, was made in 1973, and most crewed electric aircraft today are still only experimental prototypes. Between 2015 and 2016, Solar Impulse 2 completed a cir ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2000s German Civil Utility Aircraft
S, or s, is the nineteenth letter in the Latin alphabet, used in the modern English alphabet, the alphabets of other western European languages and others worldwide. Its name in English is ''ess'' (pronounced ), plural ''esses''. History Origin Northwest Semitic šîn represented a voiceless postalveolar fricative (as in 'ip'). It originated most likely as a pictogram of a tooth () and represented the phoneme via the acrophonic principle. Ancient Greek did not have a phoneme, so the derived Greek letter sigma () came to represent the voiceless alveolar sibilant . While the letter shape Σ continues Phoenician ''šîn'', its name ''sigma'' is taken from the letter ''samekh'', while the shape and position of ''samekh'' but name of ''šîn'' is continued in the '' xi''. Within Greek, the name of ''sigma'' was influenced by its association with the Greek word (earlier ) "to hiss". The original name of the letter "sigma" may have been ''san'', but due to the complica ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flight Team Twister
The Pipistrel Twister is a Slovenian ultralight trike, designed and produced by Pipistrel of Ajdovščina. It was distributed in Europe by Flight Team UG & Company AG of Ippesheim and sometimes called the Flight Team Twister. The aircraft is supplied as a complete ready-to-fly-aircraft.Bayerl, Robby; Martin Berkemeier; et al: ''World Directory of Leisure Aviation 2011-12'', page 212. WDLA UK, Lancaster UK, 2011. ISSN 1368-485X By October 2018 it was listed as a "legacy" product and production had ended. Design and development The Twister is a development of the Pipistrel Spider. It incorporates a bent main pylon, which allows more seating room for the rear seat occupant, more streamlined main landing gear legs and a Rotax 912 engine. The Twister was designed for competition use, but has been successful in the recreational market as well. The Twister was designed to comply with the Fédération Aéronautique Internationale microlight category, including the category's maximu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diamond AE50
The Austro Engine EA50R is an Austrian aircraft engine, produced by Austro Engine of Wiener Neustadt for use in motorgliders and UAVs.Bayerl, Robby; Martin Berkemeier; et al: ''World Directory of Leisure Aviation 2011-12'', pages 238-239. WDLA UK, Lancaster UK, 2011. ISSN 1368-485X Design and development The AE50R is based on the MidWest AE50. Diamond Aircraft Industries purchased the design from Mid-West Engines Limited on 10 March 2003 and took over as the type certificate holder. Diamond formed its subsidiary, Austro Engine, to produce the engine. The engine is a single rotor four-stroke, air and liquid-cooled, gasoline Wankel engine design, with a mechanical gearbox reduction drive employing a helical gear set with a reduction ratio of 3.225:1. Cooling is predominantly liquid, with forced air cooling for the rotor core. A starter and generator are standard equipment. It employs dual capacitor discharge ignition with variable ignition timing and produces at 7750 rpm. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
MidWest AE50
The MidWest AE series are lightweight, liquid-cooled, single- and twin-rotor Wankel engines, with dual ignition, designed for light aircraft. They were produced by Mid-West Engines Ltd. at Staverton Airport, Gloucestershire, UK. History This engine design traces its origins to the Birmingham Small Arms Company Umberslade Hall research unit in Birmingham. David Garside, a BSA engineer, designed an air-cooled twin-rotor motorcycle engine that was based on the Fichtel & Sachs motor later used in the Hercules motorcycle. Wankel engines produce large amounts of heat, so Garside gave this air-cooled motor interior cooling air that was drawn first through the rotors and into a large plenum chamber before entering the combustion chambers via the carburetors."Cycle World" magazine February 1971 Only 100 of the air-cooled Norton Classics were produced. The later Norton Commander had liquid-cooling, but with the same air-cooled rotors as the Classic model. These Norton engines had a total ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Light Aircraft Association
The Light Aircraft Association (LAA) is the representative body in the United Kingdom for amateur aircraft construction, and recreational and sport flying. It oversees the construction and maintenance of homebuilt aircraft, under an approval from the UK Civil Aviation Authority (CAA). The LAA was formerly known as the Popular Flying Association and was originally founded in 1946 as the Ultralight Aircraft Association. LAA Permit regime The regime for approving amateur-built aircraft in the United Kingdom differs from that in many other countries, of which the United States is the prime example. Instead of the FAA's Experimental airworthiness category, under which an amateur may design, build and operate (and is ultimately responsible for) an aircraft 'for experimental purposes', the UK CAA is required to investigate any such aircraft's 'fitness to fly' and to issue a 'Permit to Fly' when satisfied. The LAA is approved by the CAA to make recommendations for and to revalidate such Pe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
V-Prop
The V-Prop is an automatic self-powering electronic variable-pitch propeller developed by Silence Aircraft, the manufacturers of the Silence Twister single-seat elliptical-winged kitplane. Design and development The V-Prop was fitted to the prototype Twister and to some of the Twisters built in the EU. Designed by brothers Thomas and Mattheus Strieker, this microprocessor-controlled automatic propeller has a vaned spinner ahead of the main spinner. The main spinner is fixed to the output shaft in the normal fashion; but the vaned spinner is free to contra-rotate, and in doing so both generates its own power and derives rpm data that it uses to determine the ideal blade angle. The unit then automatically adjusts the blades between the coarse and fine positions. On the ground, the electronic control system can be tailored to suit each aircraft by varying some soldered connections, which give some 16 options.Silence Aircraft, (2005) ''Manual for the Silent R 1,61m V 3 and V2, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Controllable Pitch Propeller
In marine propulsion, a variable-pitch propeller is a type of propeller with blades that can be rotated around their long axis to change the blade pitch. Reversible propellers—those where the pitch can be set to negative values—can also create reverse thrust for braking or going backwards without the need to change the direction of shaft revolution. A controllable pitch propeller (CPP) can be efficient for the full range of rotational speeds and load conditions, since its pitch will be varied to absorb the maximum power that the engine is capable of producing. When fully loaded, a vessel will need more propulsion power than when empty. By varying the propeller blades to the optimal pitch, higher efficiency can be obtained, thus saving fuel. A vessel with a VPP can accelerate faster from a standstill and can decelerate much more effectively, making stopping quicker and safer. A CPP can also improve vessel maneuverability by directing a stronger flow of water onto the ru ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ULPower UL260i
The ULPower UL260i is a family of aircraft engines, produced by ULPower in Belgium. Design The UL260i series are all lightweight, four-cylinder, four-stroke, horizontally-opposed, air-cooled, direct drive engine designs that feature FADEC with multipoint fuel injection and dual ignition systems.Tacke, Willi; Marino Boric; et al: ''World Directory of Light Aviation 2015-16'', pages 262-263. Flying Pages Europe SARL, 2015. Variants ;UL260i :Base model, fuel injection, compression ratio of 8.16:1, producing ;UL260iS :Model with a higher compression ratio of 9.10:1, fuel injection, producing ;UL260iSA :Aerobatic model with a higher compression ratio of 9.10:1, fuel injection, producing ;UL260iF :Model with a higher compression ratio of 9.10:1, fuel injection, producing , due to French regulatory requirements. Applications Specifications See also ;Related development *ULPower UL350i ;Lists * List of aircraft engines ;Comparable engines * HKS 700E * Jabiru 2200 * KFM 112M * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Silence Aircraft
Silence is the absence of ambient audible sound, the emission of sounds of such low intensity that they do not draw attention to themselves, or the state of having ceased to produce sounds; this latter sense can be extended to apply to the cessation or absence of any form of communication, whether through speech or other medium. Sometimes speakers fall silent when they hesitate in searching for a word, or interrupt themselves before correcting themselves. Discourse analysis shows that people use brief silences to mark the boundaries of prosodic units, in turn-taking, or as reactive tokens, e.g., as a sign of displeasure, disagreement, embarrassment, desire to think, confusion, and the like. Relatively prolonged intervals of silence can be used in rituals; in some religious disciplines, people maintain silence for protracted periods, or even for the rest of their lives, as an ascetic means of spiritual transformation. Rhetorical practice Silence may become an effective rhe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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