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Annotation 1409645939980

#aviation #wiki
An airplane or aeroplane (informally plane) is a powered , fixed-wing aircraft that is propelled forward by thrust from a jet engine or propeller .
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Airplane - Wikipedia
magelink] [emptylink] The first flight of an airplane, the Wright Flyer on December 17, 1903 [imagelink] [emptylink] An All Nippon Airways Boeing 777 -300 taking off from New York JFK Airport . <span>An airplane or aeroplane (informally plane) is a powered , fixed-wing aircraft that is propelled forward by thrust from a jet engine , propeller or rocket engine . 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



Annotation 3762663066892

Larger modern propeller planes, such as the Dash 8, use a jet engine to turn the propeller, primarily because an equivalent piston engine in power output would be much larger and more complex.
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Airplane - Wikipedia
Propeller engines may be quieter than jet engines (though not always) and may cost less to purchase or maintain and so remain common on light general aviation aircraft such as the Cessna 172 . <span>Larger modern propeller planes, such as the Dash 8 , use a jet engine to turn the propeller, primarily because an equivalent piston engine in power output would be much larger and more complex. Reciprocating engine Main articles: Radial engine , Inline engine (aeronautics) , and Flat engine Reciprocating engines in aircraft have three main variants, radial , in-line and flat o



Annotation 3764797443340

The Wright brothers invented and flew the first airplane in 1903, recognized as "the first sustained and controlled heavier-than-air powered flight".[4]
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Airplane - Wikipedia
cargo annually, which is less than 1% of the world's cargo movement.[3] Most airplanes are flown by a pilot on board the aircraft, but some are designed to be remotely or computer-controlled . <span>The Wright brothers invented and flew the first airplane in 1903, recognized as "the first sustained and controlled heavier-than-air powered flight".[4] They built on the works of George Cayley dating from 1799, when he set forth the concept of the modern airplane (and later built and flew models and successful passenger-carrying glider



Annotation 3764799278348

The first jet airliner, the de Havilland Comet, was introduced in 1952. The Boeing 707, the first widely successful commercial jet, was in commercial service for more than 50 years, from 1958 to at least 2013.
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Airplane - Wikipedia
use in World War I , aircraft technology continued to develop. Airplanes had a presence in all the major battles of World War II . The first jet aircraft was the German Heinkel He 178 in 1939. <span>The first jet airliner , the de Havilland Comet , was introduced in 1952. The Boeing 707 , the first widely successful commercial jet, was in commercial service for more than 50 years, from 1958 to at least 2013. Contents 1 Etymology and usage 2 History 2.1 Antecedents 2.2 Early powered flights 2.3 Development of jet aircraft 3 Propulsion 3.1 Propeller 3.1.1 Reciprocating engine 3.1.2 Gas turbin



Annotation 3764803210508

Ion thrusters in operational use have an input power need of 1–7 kW, exhaust velocity 20–50 km/s, thrust 25–250 millinewtons and efficiency 65–80%[3][4] though experimental versions have achieved 100kW, 5N.[5]
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Ion thruster - Wikipedia
ns) in the same direction whatever their electric charge, and are specifically referred as plasma propulsion engines, where the electric field is not in the direction of the acceleration.[1][2] <span>Ion thrusters in operational use have an input power need of 1–7 kW, exhaust velocity 20–50 km/s, thrust 25–250 millinewtons and efficiency 65–80%[3][4] though experimental versions have achieved 100kW, 5N.[5] The Deep Space 1 spacecraft, powered by an ion thruster, changed velocity by 4.3 km/s while consuming less than 74 kilograms of xenon. The Dawn spacecraft broke the record, with a veloc