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In the 1970s, the U.S. military wanted a replacement for the aging B-52 bomber. They needed a plane that could carry nuclear bombs across the globe, to the Soviet Union, in only a few hours. And they wanted it to be nearly invisible to enemy sensors. As you might expect, hiding a giant plane is no easy task. Northrop Grumman, the defense firm that won the bomber contract, spent billions of dollars and nearly 10 years developing the top secret project. In this article, we'll find out how the B-2 flies and how it "vanishes.
" Beam.gif (245×196) Tumbling-beam.gif (500×231) Google резултати слика за. Google резултати слика за. Google резултати слика за. Google резултати слика за. Google резултати слика за. Google резултати слика за. Online Slideshow by Slide.ly. BBOYING 2013 - ITS NOT ALL ABOUT FANCY MOVES! FULL HD. BBOYING 2013 - ITS NOT ALL ABOUT FANCY MOVES! FULL HD. The Men Who Built America (The complete Series online) - Cosmos Documentaries. Aviation. Aviation is the practical aspect or art of aeronautics, being the design, development, production, operation, and use of aircraft, especially heavier-than-air aircraft.
The word "aviation" was coined by French writer and former naval officer Gabriel La Landelle in 1873, from the verb "avier" (synonymous flying), itself derived from the Latin word "avis" ("bird") and the suffix "-ation".[1] History[edit] Early beginnings[edit] Many cultures have built devices that travel through the air, from the earliest projectiles such as stones and spears,[2][3] the boomerang in Australia, the hot air Kongming lantern, and kites. Lighter than air[edit] The modern age of aviation began with the first untethered human lighter-than-air flight on November 21, 1783 of a hot air balloon designed by the Montgolfier brothers. Rigid airships became the first aircraft to transport passengers and cargo over great distances. Fighter aircraft. A fighter aircraft is a military aircraft designed primarily for air-to-air combat against other aircraft,[1] as opposed to bombers and attack aircraft, whose main mission is to attack ground targets.
The hallmarks of a fighter are its speed, maneuverability, and small size relative to other combat aircraft. Many fighters have secondary ground-attack capabilities, and some are designed as dual-purpose fighter-bombers; often aircraft that do not fulfill the standard definition are called fighters. This may be for political or national security reasons, for advertising purposes, or other reasons.[2] A fighter's main purpose is to establish air superiority over a battlefield.
Terminology[edit] As a part of military nomenclature, a letter is often assigned to various types of aircraft to indicate their use, along with a number to indicate the specific aircraft. Development overview[edit] With the steady improvements in computers, defensive systems have become increasingly efficient. Mikoyan-Gurevich MiG-23. The Mikoyan-Gurevich MiG-23 ( Russian : Микоян и Гуревич МиГ-23 ; NATO reporting name : Flogger ) is a variable-geometry fighter aircraft , designed by the Mikoyan-Gurevich design bureau in the Soviet Union.
It is considered to belong to the Soviet third generation jet fighter category, along with similarly aged Soviet fighters such as the MiG-25 "Foxbat" . It was the first attempt by the Soviet Union to design look-down/shoot-down radar and one of the first to be armed with beyond visual range missiles , and the first MiG production fighter aircraft to have intakes at the sides of the fuselage. Production started in 1970 and reached large numbers with over 5,000 aircraft built. Mikoyan MiG-29. The Mikoyan MiG-29 ( Russian : Микоян и Гуревич МиГ-29 ; NATO reporting name : "Fulcrum") is a fourth-generation jet fighter aircraft designed in the Soviet Union .
Developed by the Mikoyan design bureau as an air superiority fighter during the 1970s, the MiG-29, along with the larger Sukhoi Su-27 , was developed to counter new American fighters such as the McDonnell Douglas F-15 Eagle , and the General Dynamics F-16 Fighting Falcon . [ 6 ] The MiG-29 entered service with the Soviet Air Force in 1983; unofficially, some Soviet pilots made use of the NATO designation "Fulcrum" for the type. [ 7 ] While originally oriented towards combat against any enemy aircraft, many MiG-29s have been furnished as multirole fighters capable of performing a number of different operations, and are commonly outfitted to use a range of air-to-surface armaments and precision munitions. Development [ edit ] Origins [ edit ] However, in 1971 Soviet studies determined the need for different types of fighters.
Lockheed Martin F-22 Raptor. Military aircraft. A fighter aircraft and 3 bombers of the World War II era A military aircraft is any fixed-wing or rotary-wing aircraft that is operated by a legal or insurrectionary armed service of any type. [ 1 ] Military aircraft can be either combat or non-combat: Combat aircraft are aircraft designed to destroy enemy equipment using their own armament. [ 1 ] Combat aircraft are normally developed and procured only by military forces.
Military aircraft. Airplane. An airplane , aeroplane or simply plane , is a powered fixed-wing aircraft that is propelled forward by thrust from a jet engine or propeller .
Airplanes come in a variety of sizes, shapes, and wing configurations. The broad spectrum of uses for airplanes includes recreation, transportation of goods and people, military , and research. Most airplanes are flown by a pilot on board the aircraft, but some are designed to be remotely or computer-controlled . Etymology and usage [ edit ] First attested in English in the late 19th century (prior to the first sustained powered flight), the word airplane , like aeroplane , derives from the French aéroplane , which comes from the Greek ἀήρ ( aēr ), "air" [ 1 ] + either Latin planus , "level", [ 2 ] or Greek πλάνος ( planos ), "wandering". [ 3 ] [ 4 ] " Aéroplane " originally referred just to the wing, as it is a plane moving through the air . [ 5 ] In an example of synecdoche , the word for the wing came to refer to the entire aircraft.
Airplane.