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Continuous Descent
Continuous descent approach (CDA), also known as optimized profile descent (OPD), is a method by which aircraft approach airports prior to landing. It is designed to reduce fuel consumption and noise compared to other conventional descents. Instead of approaching an airport in a stairstep fashion, throttling down, and requesting permission to descend to each new (lower) altitude, CDA allows for a smooth, constant-angle descent to landing. A continuous descent approach starts from the top of descent, i.e., at cruise altitude, and allows the aircraft to fly its individual optimal vertical profile down to runway threshold. Some airports apply constraints to this individual optimal profile. United Kingdom The approach to London Heathrow Airport uses CDA, particularly at night, to minimize noise pollution. It is also used at Gatwick Airport. See also *List of aviation, avionics, aerospace and aeronautical abbreviations *Index of aviation articles *QTOL *Nap-of-the-earth Nap-of-the-e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
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Final Approach (aeronautics)
In aeronautics, the final approach (also called the final leg and final approach leg) is the last leg in an aircraft's approach to landing, when the aircraft is lined up with the runway and descending for landing.Crane, Dale: ''Dictionary of Aeronautical Terms, third edition'', page 213 and 241. Aviation Supplies & Academics, 1997. In aviation radio terminology, it is often shortened to "final". The last section of the final approach is sometimes referred to as short final. In a standard airport landing pattern, which is usually used under visual meteorological conditions (VMC), aircraft turns from base leg to final within one-half to two miles of the airport. For instrument approaches, as well as approaches into a controlled airfield under visual flight rules (VFR), often a "straight-in" final approach is used, where all the other legs are dispensed within. Straight-in approaches are discouraged at non-towered airports in the United States. Approach slope An approach slo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
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London Heathrow Airport
Heathrow Airport , also colloquially known as London Heathrow Airport and named ''London Airport'' until 1966, is the primary and largest international airport serving London, the capital and most populous city of England and the United Kingdom. It is the largest of the six international airports in the London airport system (the others being Gatwick, Stansted, Luton, City and Southend). The airport is owned and operated by Heathrow Airport Holdings. In 2024, Heathrow was the busiest airport in Europe, the fifth-busiest airport in the world by passenger traffic and the second-busiest airport in the world by international passenger traffic. Heathrow was the airport with the most international connections in the world in 2024. Heathrow was founded as a small airfield in 1930 but was developed into a much larger airport after World War II. It lies west of Central London on a site that covers . It was gradually expanded over 75 years and now has two parallel east–we ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
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Noise Pollution
Noise pollution, or sound pollution, is the propagation of noise or sound with potential harmful effects on humans and animals. The source of outdoor noise worldwide is mainly caused by machines, transport and propagation systems.Senate Public Works Committee. ''Noise Pollution and Abatement Act of 1972''. S. Rep. No. 1160, 92nd Congress. 2nd session Poor urban planning may give rise to noise disintegration or pollution, side-by-side industrial, and residential buildings can result in noise pollution in the residential areas. Some of the main sources of noise in residential areas include loud music, transportation (traffic, rail, airplanes, etc.), lawn care maintenance, construction, electrical generators, wind turbines, explosions, and people. Documented problems associated with noise in urban environments go back as far as ancient Rome. Research suggests that noise pollution in the United States is the highest in low-income and racial minority neighborhoods, and noise pollut ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
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Gatwick Airport
Gatwick Airport , also known as London Gatwick Airport (), is the Airports of London, secondary international airport serving London, West Sussex and Surrey. It is located near Crawley in West Sussex, south of Central London. In 2024, Gatwick was the second-busiest airport by List of busiest airports in the United Kingdom, total passenger traffic in the UK, after Heathrow Airport, and was the List of the busiest airports in Europe, 10th-busiest in Europe by total passenger traffic. It covers a total area of . Gatwick opened as an aerodrome in the late 1920s; it has been in use for commercial flights since 1933. The airport has two terminals, the North Terminal and the South Terminal, which cover areas of and respectively. It operates as a single-runway airport, using a main runway with a length of . A secondary runway is available but, due to its proximity to the main runway, can only be used if the main runway is not in use. In 2018, 46.1 million passengers passed thr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
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List Of Aviation, Avionics, Aerospace And Aeronautical Abbreviations
Below are abbreviations used in aviation, avionics, aerospace, and aeronautics. A B C D E F G H I J K L M N N numbers (turbines) O P Q R S T U V V speeds W X Y Z See also * List of aviation mnemonics * Avionics * Glossary of Russian and USSR aviation acronyms * Glossary of gliding and soaring * Appendix:Glossary of aviation, aerospace, and aeronautics – Wiktionary References SourcesAerospace acronymsTerms and GlossaryAviada Terminaro verkita de Gilbert R. LEDON, 286 pagxoj. External links Acronyms used by EASAAcronyms and Abbreviations- FAA Aviation DictionaryAviation Acronyms and AbbreviationsAcronyms search engine by Eurocontrol {{DEFAULTSORT:aviation, avionics, aerospace and aeronautical abbreviations Abbreviations An abbreviation () is a shortened form of a word or phrase, by any method including shortening, contraction, initialism (which includes acronym), or crasis. An abbreviation may be a shorte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
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Index Of Aviation Articles
Aviation is the design, development, production, operation, and use of aircraft, especially heavier-than-air aircraft. Articles related to aviation include: A Aviation accidents and incidents – Above Mean Sea Level (AMSL) – ADF – Accessory drive – Advance airfield – Advanced air mobility – Advanced technology engine – Adverse yaw – Aerial ramming – Aerial reconnaissance – Aerobatics – Aerodrome – Aerodrome mapping database (AMDB) – Aerodynamics – Aerofoil – Aerodrome beacon – Aeronautical Information Manual (AIM) – Aeronautical chart – Aeronautical Message Handling System – Aeronautical phraseology – Aeronautics – Aeronaval – Aerospace – Aerospace engineering – Afterburner – Agile Combat Employment (ACE) – Aileron – Air charter – Air defense identification zone (ADIZ) – Air freight terminal – Air traffic flow management – Air-augmented rocket – Airband – Airbase (AFB) – Airborne colli ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
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QTOL
Quiet take off and landing is a concept originating with the new generation of advanced technology engines which emit a reduction of noise levels compared to conventional turbojet and turbofan engines. Most of the main aircraft industries are developing these types of engines while the airframe manufacturers also have various new designs intended to use advanced technology engines. Apart from adapting the new engines with their twin/triple spools, methods of reducing noise include installing variable pitch fan blades to existing engine designs. Examples of this have previously been undertaken by the firm Dowty Rotol, who by changing the position of the engine, sometimes to above the wing, as on the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
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Nap-of-the-earth
Nap-of-the-earth (NOE) is a type of very low-altitude flight course used by military aircraft to avoid enemy detection and attack in a high-threat environment. Other, mostly older terms include "contour flying", "ground-hugging", "terrain masking", "flying under the radar" and "hedgehopping". During NOE flight, geographical features are used as cover, exploiting valleys and folds in the terrain by flying in, rather than over, them. This keeps the aircraft below enemy air defence radar coverage, avoiding being silhouetted against the sky. Purpose NOE is used to minimize detection by hostile aircraft, airborne early warning and control surveillance and control systems, ground-based radar, or attack targets. A high-flying aircraft can be detected by defense systems at long range, giving an air defense system time to react, alerting surface-to-air missile and anti-aircraft systems and fighter aircraft. Using NOE flight, the approach may be undetected; the aircraft "pops up" to at ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |