Plane

Plane
Name	Plane
Type	Powered fixed-wing aircraft
First flight	1903 (Wright Flyer)
Primary user	Civil aviation; Military aviation
Crew	1–20+
Passengers	1–800+
Status	Active

Plane.

A plane is a powered fixed-wing aircraft designed for controlled flight through Earth's atmosphere, used for transport, reconnaissance, combat, scientific research, and recreation. Models range from single-seat sport types to multiengine airliners and strategic bombers, operated by airlines, armed forces, private owners, and research institutions such as Boeing, Airbus, Lockheed Martin, Northrop Grumman, and Bombardier. Technological development has involved collaborations among firms, universities, and national agencies including NASA, Roscosmos, European Space Agency, CSTB and DARPA.

Etymology and Terminology

The common English term derives from Old French and Latin roots for “flat” or “level,” rendered in early technical literature by inventors and authors such as Sir George Cayley, Alberto Santos-Dumont, Otto Lilienthal, Samuel Pierpont Langley, and the Wright brothers in correspondence and patents. Contemporary nomenclature distinguishes categories by role and certification authorities like Federal Aviation Administration, European Union Aviation Safety Agency, Civil Aviation Authority (UK), and national regulators including Transport Canada and the Civil Aviation Administration of China. Technical manuals and standards produced by bodies such as International Civil Aviation Organization and RTCA define terms used across industry organizations like Air Line Pilots Association and manufacturers including Sikorsky and Cessna.

Types and Classes

Classification systems group planes into categories: commercial airliners (e.g., families from Boeing 737 and Airbus A320), regional turboprops (e.g., De Havilland Canada DHC-8), business jets (e.g., Gulfstream G650), general aviation light aircraft (e.g., Cessna 172), trainers (e.g., T-38 Talon, Yak-52), maritime patrol types (e.g., P-3 Orion), transport and cargo (e.g., Lockheed C-130 Hercules), aerial refueling tankers (e.g., KC-135 Stratotanker), fighters (e.g., F-22 Raptor, Sukhoi Su-57), multirole combat aircraft (e.g., F-35 Lightning II), strategic bombers (e.g., B-2 Spirit, Tu-160), and unmanned aerial vehicles developed by firms like General Atomics Aeronautical Systems and programs such as Predator and Reaper. Certification classes include Part 23 and Part 25 categories under Federal Aviation Regulations and special airworthiness categories for experimental and light-sport aircraft influenced by organizations like Aircraft Owners and Pilots Association.

Design and Structure

A plane's airframe integrates fuselage, wings, empennage, landing gear, and control surfaces developed with inputs from engineering centers at Massachusetts Institute of Technology, Cranfield University, Imperial College London, and industry design teams at Rolls-Royce, General Electric Aviation, Pratt & Whitney. Materials range from aluminum alloys popularized by De Havilland to composite structures used in Boeing 787 and Airbus A350 developed with suppliers such as Hexcel and Toray Industries. Avionics suites built by Honeywell Aerospace, Thales Group, and Rockwell Collins integrate flight management systems, autopilots, inertial reference units, and navigation sensors certified to standards from RTCA DO-178 and DO-254.

Aerodynamics and Performance

Lift, drag, thrust, and weight interplay determine performance metrics like cruise speed, range, ceiling, and rate of climb studied in aerodynamic research at Institute of Aerodynamics and Flow Technology, Ames Research Center, and laboratories affiliated with National Advisory Committee for Aeronautics. Wing planform choices—such as swept, delta, or straight—affect transonic behavior seen in airliners like Boeing 777 and fighters like Eurofighter Typhoon. High-lift devices, boundary-layer control, and engine integration are optimized using computational fluid dynamics pioneered in collaborations between Argonne National Laboratory and industry partners. Performance certification involves test flights, wind tunnel campaigns at facilities like National Wind Tunnel Facility and compliance with performance standards from ICAO.

History and Development

Milestones include pioneering gliding experiments by Otto Lilienthal, powered success by the Wright brothers at Kitty Hawk, early demonstrations by Alberto Santos-Dumont in Paris, and rapid expansion during World Wars I and II that accelerated manufacturers such as Supermarine, Mitsubishi Heavy Industries, Boeing, and North American Aviation. The jet age advanced with prototypes like Heinkel He 178 and production types such as de Havilland Comet, Boeing 707, and military jets including Messerschmitt Me 262. Cold War competition spurred supersonic and stealth programs like Concorde and Lockheed SR-71, while late 20th- and early 21st-century globalization drove hub-and-spoke airline models and large twinjets from Airbus and Boeing.

Operations and Use

Commercial operations are managed by carriers such as American Airlines, Delta Air Lines, Emirates, Lufthansa, and Qantas, with airport infrastructure operated by entities like Heathrow Airport Holdings and Changi Airport Group. Military operations span air forces including the United States Air Force, Royal Air Force, People's Liberation Army Air Force, and navies with carrier aviation such as United States Navy squadrons. Specialized uses involve aerial firefighting by agencies like Cal Fire, scientific campaigns by NOAA and universities, humanitarian airlift organized by United Nations World Food Programme, and aerial cinematography contracted to companies like Panavision.

Safety and Regulation

Safety frameworks are enforced by regulators such as Federal Aviation Administration and European Union Aviation Safety Agency with industry standards from International Air Transport Association and accident investigation bodies like National Transportation Safety Board and Air Accidents Investigation Branch. Certification, airworthiness directives, crew training standards administered by organizations like ICAO and unions such as ALPA aim to mitigate risks from systems failures, human factors studied by Crew Resource Management researchers, and environmental concerns addressed via emissions standards negotiated in forums including International Civil Aviation Organization.

Category:Aircraft