The Bell V-280 Valor is a tiltrotor aircraft being developed by Bell and Lockheed Martin for the United States Army's Future Vertical Lift (FVL) program. The aircraft was officially unveiled at the 2013 Army Aviation Association of America's (AAAA) Annual Professional Forum and Exposition in Fort Worth, Texas. The V-280 made its first flight on ...

The Heinkel He 280 was the first turbojet-powered fighter aircraft in the world. It was inspired by Ernst Heinkel's emphasis on research into high-speed flight and built on the company's experience with the He 178 jet prototype.A combination of technical and political factors led to it being passed over in favor of the Messerschmitt Me 262. [citation needed] Only nine were built and …

Ces rayons UV sont classés dans trois catégories en fonction de leur longueur d'onde : les UV-A (400-315 nm), UV-B (315-280 nm) et UV-C (280-100 nm). Toutefois, en raison de l'absorption des UV par la couche d'ozone de l'atmosphère, 95 % de la lumière UV qui atteint la surface de la Terre appartient à la gamme des UV-A [3], [4].

The .280 British was an experimental rimless bottlenecked intermediate rifle cartridge.It was later designated 7 mm MK1Z, and has also been known as 7 mm NATO, .280/30, .280 Enfield, .280 NATO, 7 mm FN Short, and 7×43mm.. Like most armed forces in the immediate post-World War II era, the British Army began experimenting with lighter rounds after meeting the German StG 44 …

A typewriter is a mechanical or electromechanical machine for typing characters. Typically, a typewriter has an array of keys, and each one causes a different single character to be produced on paper by striking an inked ribbon selectively against the paper with a type element.At the end of the nineteenth century, the term 'typewriter' was also applied to a person who used such a …

In cryptography, a certificate authority or certification authority (CA) is an entity that stores, signs, and issues digital certificates.A digital certificate certifies the ownership of a public key by the named subject of the certificate. This allows others (relying parties) to rely upon signatures or on assertions made about the private key that corresponds to the certified public key.

Wolfgang Amadeus Mozart's Piano Sonata No. 2 in F major, K 280 / 189e, is a piano sonata in three movements.The work was written down along with other piano sonatas during the visit Mozart paid to Munich for the production of La finta giardiniera from late 1774 to the beginning of the following March. A typical performance of the sonata takes about 14 minutes.

Zur Markteinführung im September 1972 wurden die Varianten 280 S, 280 SE und 350 SE angeboten. Im März 1973 wurden die großen Achtzylinder 450 SE und 450 SEL eingeführt. Die Hinterachse der Modelle 450 SE und 450 SEL (sowie des später eingeführten 450 SEL 6.9) war mit Anfahrmomentausgleich und Bremsmomentabstützung ausgerüstet, die Vorderachse mit …

Die SL-Baureihe 107, die 1971 als Nachfolger der sogenannten „Pagode“ (Mercedes-Benz W 113) auf den Markt kam, begründete mit den Breitband-H4-Scheinwerfern und den großen geriffelten Rückleuchten eine neue Gestaltungslinie bei Mercedes-Benz.Eine leichte Keilform deutete auf eine verbesserte Aerodynamik hin. Verantwortlicher Designer dieser Serie war erneut Friedrich …

Wikipedia is a free multilingual open-source wiki-based online encyclopedia edited and maintained by a community of volunteer editors, started on 15 January 2001 (21 years ago) () as an English-language encyclopedia.Other editions were soon created: the German and Catalan editions were created around 16 March, the French edition was created on 23 March, and the …