An aerospace manufacturer is a company or individual involved in the various aspects of designing, building, testing, selling, and maintaining aircraft, aircraft parts, missiles, rockets, or spacecraft. Aerospace is a high technology industry.
The aircraft industry is the industry supporting aviation by building aircraft and manufacturing aircraft parts for their maintenance. This includes aircraft and parts used for civil aviation and military aviation. Most production is done pursuant to type certificates and Defense Standards issued by a government body. This term has been largely subsumed by the more encompassing term: "aerospace industry".
In 2015 the aircraft production was worth US180.3Billion:61135.1 Bn or Bncombined.Theglobalaerospaceindustrywasworth838 billion in 2017: Aircraft & Engine OEMs represented 28% ( Bn), Civil & Military MRO & Upgrades 27% ( Bn), Aircraft Systems & Component Manufacturing 26% ( Bn), Satellites & Space 7% ( Bn), Missiles & UAVs 5% (Bn)andotheractivity,includingflightsimulators,defenseelectronics,publicresearchaccountedfor7 Bn).
The countries with the largest industry were led by the United States with 408.4Bn(69 Bn (%) then China with 61.2Bn(48.8 Bn (%), Germany with 46.2Bn(27.1 Bn (%), Canada with 24Bn(21 Bn (%), Spain with 14Bn(11Bn (%). The top 10 countries represent 731BnorIn2018,thenewcommercialaircraftvalueisprojectedfor270.4 billion while business aircraft will amount for 18billionandcivilhelicoptersfor4 billion.
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Aerospace is a term used to collectively refer to the atmosphere and outer space. Aerospace activity is very diverse, with a multitude of commercial, industrial and military applications. Aerospace engineering consists of aeronautics and astronautics. Aerospace organizations research, design, manufacture, operate, or maintain both aircraft and spacecraft. The beginning of space and the ending of the air is considered as 100 km (62 mi) above the ground according to the physical explanation that the air pressure is too low for a lifting body to generate meaningful lift force without exceeding orbital velocity.
A fleet carrier is an aircraft carrier designed to operate with the main fleet of a nation's navy. The term was developed during World War II, to distinguish it from the escort carrier and other less capable types. In addition to many medium-sized carriers, supercarriers, as well as some light carriers, are also classed as fleet carriers. Aircraft carriers were designed in the years between World War I and World War II.
An aircraft carrier is a warship that serves as a seagoing airbase, equipped with a full-length flight deck and facilities for carrying, arming, deploying, and recovering aircraft. Typically, it is the capital ship of a fleet, as it allows a naval force to project air power worldwide without depending on local bases for staging aircraft operations. Carriers have evolved since their inception in the early twentieth century from wooden vessels used to deploy balloons to nuclear-powered warships that carry numerous fighters, strike aircraft, helicopters, and other types of aircraft.
Heterojunction carrier selective contacts for solar cells have gained great attention because of the ability of these contacts to efficiently collect majority carriers while hindering the recombination of minority carriers, thus resulting in the highest re ...
PERGAMON-ELSEVIER SCIENCE LTD2022
Le béton est un matériau qui symbolise nombre d’ambivalences de notre monde actuel. S’il a permis de loger une multitude de personnes, de créer de grandes installations énergétiques et d’améliorer notre niveau de vie, il a aussi des impacts environnementau ...
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Two-dimensional (2D) materials are atomically thin crystals with exceptional mechanical, electrical and optical properties. Their unique characteristics originating from quantum confinement in the vertical dimension have attracted a strong interest for sci ...
Contemporary history, in English-language historiography, is a subset of modern history that describes the historical period from approximately 1945 to the present. Contemporary history is either a subset of the late modern period, or it is one of the three major subsets of modern history, alongside the early modern period and the late modern period. In the social sciences, contemporary history is also continuous with, and related to, the rise of postmodernity.
In the United States, politics function within a framework of a constitutional federal republic and presidential system, with three distinct branches that share powers: the U.S. Congress which forms the legislative branch, a bicameral legislative body comprising the House of Representatives and the Senate; the executive branch, which is headed by the president of the United States, who serves as the country's head of state and government; and the judicial branch, composed of the Supreme Court and lower federal courts, and which exercises judicial power.
A spacecraft (: spacecraft) is a vehicle that is designed to fly in outer space and operate there. Spacecraft are used for a variety of purposes, including communications, Earth observation, meteorology, navigation, space colonization, planetary exploration, and transportation of humans and cargo. All spacecraft except single-stage-to-orbit vehicles cannot get into space on their own, and require a launch vehicle (carrier rocket).