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PWS-33 Wyżeł
The PWS-33 Wyżeł was a Polish twin-engined military trainer aircraft from a period before World War II constructed by ''Podlaska Wytwórnia Samolotów'' or PWS (" Podlasie Aircraft Factory"). Although destined for production it got no further than the prototypes before Poland was invaded. Design and development With an expected advent of a twin-engine heavy fighter, the PZL.38 Wilk, which was supposed to be a basic fighter and bomber aircraft in the Polish Air Force, there appeared the need for a twin-engine trainer aircraft for pilots. In 1936, the PWS works were ordered to build a trainer of cheap wooden construction, similar in layout to the PZL.38. The main designer was Wacław Czerwiński, known for designing several successful sailplanes. The prototype of the PWS-33 first flew in August–September 1938. The aircraft appeared successful with good flight characteristics and the maximum speed turned out to be even higher than had been estimated. It was given a name ''WyŠ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trainer Aircraft
A trainer is a class of aircraft designed specifically to facilitate flight training of pilots and aircrews. The use of a dedicated trainer aircraft with additional safety features—such as tandem flight controls, forgiving flight characteristics and a simplified cockpit arrangement—allows pilots-in-training to safely advance their skills in a more forgiving aircraft. Civilian pilots are normally trained in a light aircraft, with two or more seats to allow for a student and instructor. Tandem and side by side The two seating configurations for trainer aircraft are: pilot and instructor side by side, or in tandem, usually with the pilot in front and the instructor behind. The side-by-side seating configuration has the advantage that pilot and instructor can see each other's actions, allowing the pilot to learn from the instructor and the instructor to correct the student pilot. The tandem configuration has the advantage of being closer to the normal working environment that ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Biała Podlaska
Biała Podlaska ( la, Alba Ducalis) is a city in eastern Poland with 56,498 inhabitants as of December 2021. It is situated in the Lublin Voivodeship (since 1999), having previously been the capital of Biała Podlaska Voivodeship (1975–1998). It is the capital of Biała Podlaska County, although the city is not part of the county (it constitutes a separate city county). The city lies on the Krzna river. History The first historical document mentioning Biała Podlaska dates to 1481. In the beginning Biała Podlaska belonged to the Illnicz family. The founder of the city may have been Piotr Janowicz, nicknamed "Biały" (Polish for "white"), who was the hetman of the Grand Duchy of Lithuania. Biała Podlaska was administratively part of the Podlaskie Voivodeship (1513–1795), Podlaskie Voivodeship, and then the Brest Litovsk Voivodeship in the Grand Duchy of Lithuania (then in Polish–Lithuanian union, union with Poland).Biała PodlaskaHistoria miasta - Serwis Urzędu Miasta Bi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Miles Gemini
The Miles M.65 Gemini was a British twin-engined four-seat touring aircraft designed and built by Miles Aircraft at Woodley Aerodrome. It was the last Miles aircraft to be produced in quantity. Development of the Gemini was conducted at a rapid pace following the end of the Second World War, the company being keen to bring its new designs to the postwar civil aviation sector. The speed of development was greatly bolstered by basing the design on the single-engined Miles Messenger. First flying on 26 October 1945, the company's confidence in the aircraft was such that sales demonstrations using the prototype started only days later, while efforts to commence large scale production were started immediately. Within its first year of availability, 130 Geminis had been sold, proving its popularity. It performance was such that it became a successful racing aircraft, with one example alone winning numerous competitions. The company endeavoured to introduce numerous improvements upon ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hanriot H
Aéroplanes Hanriot et Cie. or simply 'Hanriot' was a French aircraft manufacturer with roots going back to the beginning of aviation. Founded by René Hanriot in 1910 as ''The Monoplans Hanriot Company Ltd.'' the company survived in different forms until 1916 when it established itself with the Hanriot-Dupont (HD.) fighters and observation aircraft. The company lasted through several takeovers and structural changes until in 1936 it merged with Farman to become the Société Nationale de Constructions Aéronautiques du Centre (SNCAC). 'Central Air Works' consortium. Hanriot aeroplanes included pre-war monoplanes with boat-like fuselages, the HD.1 and 2 World War I biplane fighters, the HD.14 trainer, and the H.220 series of twin-engined heavy fighters that eventually evolved in the SNCAC 600 fighter just before World War II. The company's main bases of operations were Bétheny (a suburb of Reims) Boulogne-Billancourt, Carrières-sur-Seine and Bourges. History René Hanri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Curtiss AT-9
The Curtiss-Wright AT-9 Jeep was a twin-engined advanced trainer aircraft used by the United States during World War II to bridge the gap between single-engined trainers and twin-engined combat aircraft. The AT-9 had a low-wing cantilever monoplane configuration, retractable landing gear and was powered by two Lycoming R-680-9 radial engines. Development Curtiss-Wright anticipated the requirement for this type of "high-performance" aircraft and designed the Curtiss-Wright CW-25, a twin-engined trainer, which possessed the takeoff and landing characteristics of a light bomber. Using the same basic design as the larger Cessna AT-17 Bobcat, the new CW-25 was designed to simulate the demands of multi-engined operations. The design featured a small layout, grouping two Lycoming R-680-9 radial engines forward and using a retractable tailwheel landing gear to achieve the performance necessary to meet the requirements of an advanced trainer. The single CW-25 prototype acquired for evalua ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
PWU Wz
PWU may refer to: *Pacific Western University (California) *Pacific Western University (Hawaii) * Państwowe Wytwórnie Uzbrojenia or State Arms Factories *Paranur railway station, Tamil Nadu, India (station code) *Pennsylvania Western University or Penn West *Philippine Women's University The Philippine Women's University (PWU) is a tertiary education school which has its main campus in Manila, Philippines. An institution exclusive for girls from its inception until the 1970s, the PWU admits both women and men as its students. ... (Manila, Philippines) * Powerloom Workers Union {{disambig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
PZInż Major 4B
Walter Major was a family of Czechoslovak aircraft inline engines developed by Walter Aircraft Engines in the 1930s. Design and development Available in either four or six cylinder configuration, with identical bore and stroke of and , respectively, the Walter Majors were primarily used in light aircraft. License-built in Poland by the state-owned Państwowe Zakłady Inżynieryjne (as the PZInż. Major 4), the engine was used in, among others, Zlin Z-XIII, RWD-11 and one of the PWS-35 Ogar prototypes. Applications Walter Major 4 * Beneš-Mráz Be-50 Beta-Minor * Beneš-Mráz Be-52 * Beneš-Mráz Be-56 * Beneš-Mráz Be-250 * Beneš-Mráz Be-251 * González Gil-Pazó GP-4 * PWS-35 Ogar * RWD 13 * RWD 20 * Spartan Cruiser * Zlin Z-XIII * Rubik R-18 Kánya Walter Major 6 * Breda Ba.44 * Caproni Ca.308 Borea * RWD 11 * Rogožarski SIM-XII-H Specifications (Major 4) See also External links Oldengine.org [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Landing Gear
Landing gear is the undercarriage of an aircraft or spacecraft that is used for takeoff or landing. For aircraft it is generally needed for both. It was also formerly called ''alighting gear'' by some manufacturers, such as the Glenn L. Martin Company. For aircraft, Stinton makes the terminology distinction ''undercarriage (British) = landing gear (US)''. For aircraft, the landing gear supports the craft when it is not flying, allowing it to take off, land, and taxi without damage. Wheeled landing gear is the most common, with skis or floats needed to operate from snow/ice/water and skids for vertical operation on land. Faster aircraft have retractable undercarriages, which fold away during flight to reduce drag. Some unusual landing gear have been evaluated experimentally. These include: no landing gear (to save weight), made possible by operating from a catapult cradle and flexible landing deck: air cushion (to enable operation over a wide range of ground obstacles and wat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Duralumin
Duralumin (also called duraluminum, duraluminium, duralum, dural(l)ium, or dural) is a trade name for one of the earliest types of age-hardenable aluminium alloys. The term is a combination of '' Dürener'' and ''aluminium''. Its use as a trade name is obsolete. Today the term mainly refers to aluminium–copper alloys, designated as the 2000 series by the international alloy designation system (IADS), as with 2014 and 2024 alloys used in airframe fabrication. History Duralumin was developed by the German metallurgist Alfred Wilm at Dürener Metallwerke AG. In 1903, Wilm discovered that after quenching, an aluminium alloy containing 4% copper would harden when left at room temperature for several days. Further improvements led to the introduction of duralumin in 1909. The name is mainly used in pop-science to describe all Al-Cu alloys system, or '2000' series, as designated through the international alloy designation system originally created in 1970 by the Aluminum A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flap (aircraft)
A flap is a high-lift device used to reduce the stalling speed of an aircraft wing at a given weight. Flaps are usually mounted on the wing trailing edges of a fixed-wing aircraft. Flaps are used to reduce the take-off distance and the landing distance. Flaps also cause an increase in drag so they are retracted when not needed. The flaps installed on most aircraft are partial-span flaps; spanwise from near the wing root to the inboard end of the ailerons. When partial-span flaps are extended they alter the spanwise lift distribution on the wing by causing the inboard half of the wing to supply an increased proportion of the lift, and the outboard half to supply a reduced proportion of the lift. Reducing the proportion of the lift supplied by the outboard half of the wing is accompanied by a reduction in the angle of attack on the outboard half. This is beneficial because it increases the margin above the stall of the outboard half, maintaining aileron effectiveness and reduci ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leading Edge Slats
Slats are aerodynamic surfaces on the leading edge of the wing of a fixed-wing aircraft which, when deployed, allow the wing to operate at a higher angle of attack. A higher coefficient of lift is produced as a result of angle of attack and speed, so by deploying slats an aircraft can fly at slower speeds, or take off and land in shorter distances. They are used during takeoff and landing or while performing low speed maneuvers which may take the aircraft close to a stall, they are retracted in normal flight to minimize drag. Slats are one high-lift device used on high speed turbojet aircraft, trailing edge flap systems running along the trailing edge of the wing are common on all aircraft. Types Types include: ;Automatic: The spring-loaded slat lies flush with the wing leading edge, held in place by the force of the air acting on them. As the aircraft slows down, the aerodynamic force is reduced and the springs extend the slats. Sometimes referred to as Handley-Page slat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monocoque
Monocoque ( ), also called structural skin, is a structural system in which loads are supported by an object's external skin, in a manner similar to an egg shell. The word ''monocoque'' is a French term for "single shell". First used for boats, a true monocoque carries both tensile and compressive forces within the skin and can be recognised by the absence of a load-carrying internal frame. Few metal aircraft other than those with milled skins can strictly be regarded as pure monocoques, as they use a metal shell or sheeting reinforced with frames riveted to the skin, but most wooden aircraft are described as monocoques, even though they also incorporate frames. By contrast, a semi-monocoque is a hybrid combining a tensile stressed skin and a compressive structure made up of longerons and ribs or frames. Other semi-monocoques, not to be confused with true monocoques, include vehicle unibodies, which tend to be composites, and inflatable shells or balloon tanks, both of which ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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