|
Asymmetrical Aircraft
Asymmetrical aircraft have left- and right-hand sides which are not exact mirror images of each other. Although most aircraft are symmetrical, there is no fundamental reason why they must be, and design goals can sometimes be best achieved with an asymmetrical aircraft. Types of asymmetry Asymmetry arises from a number of design decisions. Some are inherent in the type of aircraft, while others are consciously introduced. Engine torque On a powerful propeller-driven aircraft, the engine torque driving the propeller creates an equal and opposite torque on the engine itself. Because the engine is fixed to the airframe, this reactive torque is transmitted to the aircraft, causing a tendency to roll in the opposite direction to the propeller. On some early types, especially during the pioneer years, a single engine drove twin propellers and the drive was arranged to turn the propellers in opposite directions to cancel their torque. Examples include the Wright Flyer and the early des ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Torque
In physics and mechanics, torque is the rotational analogue of linear force. It is also referred to as the moment of force (also abbreviated to moment). The symbol for torque is typically \boldsymbol\tau, the lowercase Greek letter ''tau''. When being referred to as moment of force, it is commonly denoted by . Just as a linear force is a push or a pull applied to a body, a torque can be thought of as a twist applied to an object with respect to a chosen point; for example, driving a screw uses torque to force it into an object, which is applied by the screwdriver rotating around its axis to the drives on the head. Historical terminology The term ''torque'' (from Latin , 'to twist') is said to have been suggested by James Thomson and appeared in print in April, 1884. Usage is attested the same year by Silvanus P. Thompson in the first edition of ''Dynamo-Electric Machinery''. Thompson describes his usage of the term as follows: Today, torque is referred to using d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gotha G
''Gothaer Waggonfabrik'' (''Gotha'', GWF) was a German manufacturer of rolling stock established in the late nineteenth century at Gotha (town), Gotha. During the two world wars, the company expanded into aircraft building. World War I In World War I, Gotha was the manufacturer of a highly successful series of bombers based on a Gotha G.I, 1914 design by Oskar Ursinus and developed by Hans Burkhard. From 1917, the Burkhard-designed twin Pusher configuration, pusher biplane bomber aircraft were capable of carrying out strategic bombing missions over England, the first heavier-than-air aircraft used in this role. Several dozen of these bombers were built in a number of subtypes - the Ursinus-based Gotha G.I, and the succeeding Burkhard-designed Gotha G.II, G.II, Gotha G.III, G.III, Gotha G.IV, G.IV, and Gotha G.V, G.V. This last variant was the most prolific, with thirty-six in squadron service at one point. Inter war years Whilst Germany was prohibited from military aircraft ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scaled Composites ARES
The Scaled Composites ARES is a demonstrator aircraft built by Scaled Composites. ARES is an acronym for ''Agile Responsive Effective Support''. Development In 1981, United States Army Aviation Branch, U.S. Army Aviators Jim Kreutz and Milo Burroughs undertook a study for a ''low cost battlefield attack aircraft'' (LCBAA), as they felt the close air support aircraft available were inadequate to support the U.S. Army operations. They decided that a fixed-wing aircraft with excellent maneuvering capabilities at very low altitudes and resistance to stall (flight), stall would be necessary. Burt Rutan joined their study to design an aircraft to meet the requirements with a two-phase program. The first phase was the preliminary design of LCBAA, while in the second phase the Long EZ aircraft was modified to serve as a technology demonstrator. The original layout was of a low wing Canard (aeronautics), canard configuration, aircraft powered by a Pusher configuration, pusher turboprop, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rutan Boomerang
__NOTOC__ The Rutan Model 202 Boomerang is an aircraft designed and built by Burt Rutan, with the first prototype taking flight in 1996. The design was intended to be a multi-engine aircraft that in the event of failure of a single engine would not become dangerously difficult to control due to asymmetric thrust. The result is an asymmetrical aircraft with a very distinct appearance. Design and development The Boomerang was designed around the specifications of the Beechcraft Baron 58, one of the best known and most numerous twin-engine civilian aircraft. The use of the asymmetrical design allows the Boomerang to fly faster and farther than the Baron using smaller engines, and seating the same number of occupants. The Boomerang is powered by two engines, with the right engine producing 10 hp (8 kW) more power than the left one (the engines are in fact the same model, just rated differently). The wings are forward-swept.Schapiro, Steve.Burt Rutan's Favorite Ride, Air & ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Napier Sabre
The Napier Sabre is a British H engine, H-24-cylinder, coolant, liquid-cooled, sleeve valve, piston aircraft engine, aero engine, designed by Frank Halford, Major Frank Halford and built by D. Napier & Son during World War II. The engine evolved to become one of the most powerful Inline engine (aviation), inline piston aircraft engines in the world, developing from in its earlier versions to in late-model prototypes. The first operational aircraft to be powered by the Sabre were the Hawker Typhoon and Hawker Tempest; the first aircraft powered by the Sabre was the Napier-Heston Racer, which was designed to capture the world speed record. Other aircraft using the Sabre were early prototype and production variants of the Blackburn Firebrand, the Martin-Baker MB 3 prototype and a Hawker Sea Fury, Hawker Fury prototype. The rapid introduction of jet engines after the war led to the quick demise of the Sabre, as there was less need for high power military piston aero engines and b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Peter Isaacson
Peter Stuart Isaacson, Order of Australia, AM, Distinguished Flying Cross (United Kingdom), DFC, Air Force Cross (United Kingdom), AFC, Distinguished Flying Medal, DFM (31 July 1920 – 7 April 2017) was an Australian publisher and decorated military pilot. He was the owner of Peter Isaacson Publications, publisher of various trade journals and suburban newspapers including the ''Southern Cross'' and the ''Sunday Observer'' in Melbourne. During World War II, he served in the Royal Australian Air Force (RAAF) as a pilot with RAF Bomber Command and was awarded the Distinguished Flying Cross (United Kingdom), Distinguished Flying Cross, the Air Force Cross (United Kingdom), Air Force Cross and the Distinguished Flying Medal. Isaacson grew up in Melbourne and started working for a newspaper when he was sixteen. He joined the RAAF in 1940. Following his stint in Bomber Command, he became well known in Australia for his tours in the Avro Lancaster ''Q-for-Queenie'' to promo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Messerschmitt P
Messerschmitt AG () was a German share-ownership limited, aircraft manufacturing corporation named after its chief designer Willy Messerschmitt from mid-July 1938 onwards, and known primarily for its World War II fighter aircraft, in particular the Bf 109 and Me 262. The company survived in the post-war era, undergoing a number of mergers and changing its name from Messerschmitt to Messerschmitt-Bölkow-Blohm before being bought by Deutsche Aerospace (DASA, now part of Airbus) in 1989. History Background In February 1916, the south German engineering company MAN AG and several banks purchased the unprofitable aircraft builder Otto-Flugzeugwerke, starting a new company, ''Bayerische Flugzeugwerke AG'' (abbreviated ''B.F.W.'', and meaning approximately "Bavarian Aircraft Factory"). The articles of association were drawn up on 19 and 20 February, and completed on 2 March 1916. Details of the company were recorded in the Commercial Register with an equity capital of RM 1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oblique Wing
An oblique wing (also called a slewed wing) is a variable geometry wing concept. On an aircraft so equipped, the wing is designed to rotate on center pivot, so that one tip is swept forward while the opposite tip is swept aft. By changing its sweep angle in this way, drag can be reduced at high speed (with the wing swept) without sacrificing low speed performance (with the wing perpendicular). This is a variation on the classic swing-wing design, intended to simplify construction and retain the center of gravity as the sweep angle is changed. History The oldest examples of this technology are the unrealized German aircraft projects Blohm & Voss P.202 and Messerschmitt Me P.1009-01 from the year 1944, based on a Messerschmitt patent. Shortly after the conclusion of the Second World War, the German aircraft designer Dr. Richard Vogt was brought to the US during Operation Paperclip. The oblique wing concept was resurrected by the American aeronautical engineer Robert T. Jone ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blohm & Voss P 202
The Blohm & Voss P.202 was an unusual design study for a variable-geometry jet fighter during World War II. It was the first design to incorporate a slewed wing (also known as an oblique or scissor wing) in which one side swept forward and the other back. The P.202 was never built or flown. Design The high speeds attainable by jet aeroplanes led German workers to develop the swept wing, in order to minimise the problems met as the speed of sound was approached. But sweeping the wings causes problems of its own, especially at the low speeds used for takeoff and landing. A variable-sweep mechanism was one possible solution but it would be complex, heavy and expensive. It also has problems with movement of the centre of lift. Both backwards and forwards sweep were investigated and they proved to have opposite disadvantages. Sweeping one wing forwards and the other back would balance out the aerodynamic problems and a one-piece slewed wing approach would not need such a complex swee ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blohm & Voss P
Blohm is a surname. Notable people with the surname include: *Hans Blohm C.M. (born 1927), photographer and author *Hermann Blohm (1848–1930), German businessman and co-founder of German company Blohm+Voss *Irma Blohm (1909–1997), German politician *Linn Blohm (born 1992), Swedish handball player for IK Sävehof and the Swedish national team *Robert Blohm (born 1948), American and Canadian investment banker, economist and statistician, professor in China's Central University of Finance and Economics *Tom Blohm (1920–2000), Norwegian football player See also *Blohm + Voss, a German shipbuilding and engineering works *Blom *Bohm (other) Bohm may refer to: Physics * David Bohm, 20th century theoretical physicist who lent his name to several concepts in physics: ** Aharonov–Bohm effect of electromagnetic potential on a particle ** Debye sheath#The Bohm sheath criterion, Bohm sheat ... {{surname de:Blohm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blohm & Voss P 178
The Blohm & Voss P 178 was a German jet-powered dive bomber/fighter-bomber of unusual asymmetric form, proposed during World War II. Overview This asymmetrically-designed dive bomber had one Junkers Jumo 004B turbojet located under the wing to the starboard side of the fuselage. The pilot sat in a cockpit in the forward fuselage, with a large fuel tank located to the rear of the cockpit. Beneath the fuel tank, there was a deep recess in which an SC 500 bomb could be carried within the fuselage, or an SC 1000 bomb which would protrude slightly out of the fuselage. Two solid-fuel auxiliary rockets extended from the rear, used for take-off. Two 15 mm (.60 in) MG 151 cannons were located in the nose.Jean-Denis Lepage, ''Aircraft of the Luftwaffe, 1935-1945: An Illustrated Guide'' Specifications See also *List of German aircraft projects, 1939–45 A list is a set of discrete items of information collected and set forth in some format for utility, entertainmen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blohm & Voss BV 237
The Blohm & Voss BV 237 was a German proposed dive bomber with an unusual asymmetric design based on the Blohm & Voss BV 141. Design and development In 1942, the ''Luftwaffe'' was interested in replacing the venerable but ageing Junkers Ju 87, and Dr. Richard Vogt's design team at Blohm & Voss began work on project P 177. The dive bomber version would have had a one-man crew with two fixed forward firing MG 151 cannon and two rear firing MG 131 machine guns, carrying of bombs. A two-seat ground attack version was also proposed with two fixed forward firing MG 151 cannon, three forward firing MK 103 cannon with six bombs. A final B-1 type was to incorporate a Junkers Jumo 004B turbojet engine in a third nacelle slung underneath the wing, between the piston engine and the cockpit. In early 1943 the B&V design, now called the BV 237, was shown to Hitler and he ordered it into production. However the order was not carried out.Hans Amtmann; "Blohm und Voss Remembered", Part 2 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
