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Astra-Protopopescu
The Astra-Protopopescu or Astra-Proto was a Romanian reconnaissance aircraft flown and tested in 1925. Design and development The Astra-Proto, designed by Lieutenant-Colonel Ștefan Protopopescu and built by the Astra Aircraft Factory at Arad was intended as a reconnaissance aircraft. It was a biplane with constant chord wings, straight-edged and slightly swept at about 2°. Their tips were rounded. The lower wing was a little shorter and smaller in area, providing 47% of the total. The structure of the wings, like that of the rest of the aircraft, was entirely wood and they were each built around two spars. It was a single bay biplane with significant stagger; the wings were relatively displaced horizontally by and separated vertically by . The bay was formed by a parallel pair of interplane struts on each side, together with bracing wires; each pair of struts leaned forwards because of the stagger and also slightly outwards. The central upper wing was joined to the uppe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Astra Aircraft Factory
The Astra Aircraft Factory ( ro, Fabrica de avioane Astra) in Arad was the second Romanian factory to build aircraft. Its activity took place between 1923 and 1925, producing four models of aircraft: '' Astra-Șeșefschi'', Proto 1, Proto 2 and Astra-Proto. History From 1915, the ''Marta'' factory had been producing Austro-Daimler aircraft engines. After the war, the factory was merged with the '' Weitzer wagon'' factory, becoming '' Uzina de Vagoane Astra Arad'' (the Astra-Arad Wagon Factory). In 1923, ''Comandor'' Andrei Popovici, former commander of ''Grupul 2 Aeronautic'' (2nd Aeronautical Group) became the director of the factory, around the same time the construction of an aircraft prototype began. Conceived and designed by engineer Stanislav Șeșefschi, the aircraft was called ''Astra-Șeșefschi''. Next came the production of Proto 1 and Proto 2 airplanes. In 1925, Astra built the prototype ''Astra-Proto'', after the design by Major Ștefan Protopopescu. This machine ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ștefan Protopopescu
Ștefan Protopopescu (14 January 1886 – 10 October 1929) was a Romanian officer and aviation pioneer, he held the no. 1 pilot license in Romania, being the first licensed pilot in Romania and the first pilot of the Romanian Army. Military career Ștefan Protopopescu, "Bîrță" for friends, was born on 14 January 1886 at Turnu Severin. After graduating from Traian National College, Traian High School in his hometown, he attended the School for Military Engineer Officers in Bucharest, receiving the rank of ''Second lieutenant, Sublocotenent''. Attracted by aviation, he started pilot training at the Cerchez & Co., flight school from Chitila together with Lt. Stelian Boiangiu, Slt. Nicolae Druțu and Slt. Gheorghe Negrescu. He graduated on 9 July 1911, receiving the no. 1 pilot license in Romania, being followed by , who received his license 8 days later. After getting his license, he participated in the autumn military maneuvers that took place at Pașcani-Roman, Romania, Roman ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
WikiProject Aircraft
A WikiProject, or Wikiproject, is a Wikimedia movement affinity group for contributors with shared goals. WikiProjects are prevalent within the largest wiki, Wikipedia, and exist to varying degrees within sister projects such as Wiktionary, Wikiquote, Wikidata, and Wikisource. They also exist in different languages, and translation of articles is a form of their collaboration. During the COVID-19 pandemic, CBS News noted the role of Wikipedia's WikiProject Medicine in maintaining the accuracy of articles related to the disease. Another WikiProject that has drawn attention is WikiProject Women Scientists, which was profiled by '' Smithsonian'' for its efforts to improve coverage of women scientists which the profile noted had "helped increase the number of female scientists on Wikipedia from around 1,600 to over 5,000". On Wikipedia Some Wikipedia WikiProjects are substantial enough to engage in cooperative activities with outside organizations relevant to the field at issue. For e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cockpit
A cockpit or flight deck is the area, usually near the front of an aircraft or spacecraft, from which a Pilot in command, pilot controls the aircraft. The cockpit of an aircraft contains flight instruments on an instrument panel, and the controls that enable the pilot to fly the aircraft. In most airliners, a door separates the cockpit from the aircraft cabin. After the September 11 attacks, September 11, 2001 attacks, all major airlines Airport_security_repercussions_due_to_the_September_11_attacks#Improved_security_on_aircraft, fortified their cockpits against access by aircraft hijacking, hijackers. Etymology The word cockpit seems to have been cockpit (sailing), used as a nautical term in the 17th century, without reference to cock fighting. It referred to an area in the rear of a ship where the cockswain's station was located, the cockswain being the pilot of a smaller "boat" that could be dispatched from the ship to board another ship or to bring people ashore. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Proto 2 (aircraft)
Proto 2 was a training biplane manufactured at the '' Fabrica de avioane Astra'' in Arad in 1924. Design and development Following the accident of Ioan Sava, a new variant of the Proto 1 was created, called the Proto 2. The airplane kept the original design, but as a safety measure, the structure of the wings was strengthened by increasing the section of the spars and adding another pair of interplane struts. Service After these improvements were made, the Astra Factory built 25 aircraft. The airplanes were then supplied to the Ministry of War, which assigned them to the Military Flying School of Tecuci Tecuci () is a municipiu, city in Galați County, Romania, in the historical region of Western Moldavia. It is situated among wooded hills, on the right bank of the Bârlad River, and at the junction of railways from Galați, Bârlad, and Mără .... Specifications References {{Reflist Single-engined tractor aircraft Aircraft first flown in 1924 Ștefan Protop ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Proto 1
Proto 1 was a training biplane designed by Major Ștefan Protopopescu in collaboration with Dumitru Baziliu and Gheorghe Ticău at Arsenalul Aeronautic in Bucharest in 1922. It was the first Romanian airplane to be built in a specialized enterprise. The first experimental flights were carried out by its designer, Ștefan Protopopescu, who held the Romanian pilot licence No.1. Production The Ministry of War ordered 25 aircraft on 10 January 1923 of this type from the ''Fabrica de avioane Astra''. The Astra Factory changed the wings on its own initiative, which reduced the strength of the wings, and during an early test flight, one of the wings broke and the aircraft crashed into the Mureș river, killing the test pilot. After the accident, production of Proto 1 aircraft was halted and improvements were made to the design, after which Astra manufactured a new variant as the Proto 2 Proto 2 is the name of the $55 million initiative of the Defense Advanced Research Projects Ag ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Strut
A strut is a structural component commonly found in engineering, aeronautics, architecture and anatomy. Struts generally work by resisting longitudinal compression, but they may also serve in tension. Human anatomy Part of the functionality of the clavicle is to serve as a strut between the scapula and sternum, resisting forces that would otherwise bring the upper limb close to the thorax. Keeping the upper limb away from the thorax is vital for its range of motion. Complete lack of clavicles may be seen in cleidocranial dysostosis, and the abnormal proximity of the shoulders to the median plane exemplifies the clavicle's importance as a strut. Architecture and construction Strut is a common name in timber framing for a support or brace of scantlings lighter than a post. Frequently struts are found in roof framing from either a tie beam or a king post to a principal rafter. Struts may be vertically plumb or leaning (then called canted, raking, or angled) and may be straight ... [...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] |
Rudder
A rudder is a primary control surface used to steer a ship, boat, submarine, hovercraft, aircraft, or other vehicle that moves through a fluid medium (generally aircraft, air or watercraft, water). On an aircraft the rudder is used primarily to counter adverse yaw and p-factor and is not the primary control used to turn the airplane. A rudder operates by redirecting the fluid past the hull (watercraft), hull or fuselage, thus imparting a turning or yaw (rotation), yawing motion to the craft. In basic form, a rudder is a flat plane or sheet of material attached with hinges to the craft's stern, tail, or after end. Often rudders are shaped so as to minimize Drag (physics), hydrodynamic or aerodynamic drag. On simple watercraft, a tiller—essentially, a stick or pole acting as a lever arm—may be attached to the top of the rudder to allow it to be turned by a helmsman. In larger vessels, cables, pushrods, or hydraulics may be used to link rudders to steering wheels. In typical air ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Elevator (aeronautics)
Elevators are flight control surfaces, usually at the rear of an aircraft, which control the aircraft's pitch, and therefore the angle of attack and the lift of the wing. The elevators are usually hinged to the tailplane or horizontal stabilizer. They may be the only pitch control surface present, and are sometimes located at the front of the aircraft (early airplanes) or integrated into a rear "all-moving tailplane", also called a slab elevator or stabilator. Elevator control effectiveness The elevator is a usable up and down system that controls the plane, horizontal stabilizer usually creates a ''downward'' force which balances the nose down moment created by the wing lift force, which typically applies at a point (the wing center of lift) situated aft of the airplane's center of gravity. The effects of drag and changing the engine thrust may also result in pitch moments that need to be compensated with the horizontal stabilizer. Both the horizontal stabilizer and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tailplane
A tailplane, also known as a horizontal stabiliser, is a small lifting surface located on the tail (empennage) behind the main lifting surfaces of a fixed-wing aircraft as well as other non-fixed-wing aircraft such as helicopters and gyroplanes. Not all fixed-wing aircraft have tailplanes. Canards, tailless and flying wing aircraft have no separate tailplane, while in V-tail aircraft the vertical stabiliser, rudder, and the tail-plane and elevator are combined to form two diagonal surfaces in a V layout. The function of the tailplane is to provide stability and control. In particular, the tailplane helps adjust for changes in position of the centre of pressure or centre of gravity caused by changes in speed and attitude, fuel consumption, or dropping cargo or payload. Tailplane types The tailplane comprises the tail-mounted fixed horizontal stabiliser and movable elevator. Besides its planform, it is characterised by: *Number of tailplanes - from 0 ( tailless or canard) t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Balanced Rudder
Balanced rudders are used by both ships and aircraft. Both may indicate a portion of the rudder surface ahead of the hinge, placed to lower the control loads needed to turn the rudder. For aircraft the method can also be applied to elevators and ailerons; all three aircraft control surfaces may also be mass balanced, chiefly to avoid aerodynamic flutter. Ships A balanced rudder is a rudder in which the axis of rotation of the rudder is behind its front edge. This means that when the rudder is turned, the pressure of water caused by the ship's movement through the water acts upon the forward part to exert a force which increases the angle of deflection, so counteracting the pressure acting on the after part, which acts to reduce the angle of deflection. A degree of semi-balance is normal to avoid rudder instability i.e. the area in front of the pivot is less than that behind. This allows the rudder to be moved with less effort than is necessary with an unbalanced rudder. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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