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In aviation, a go-around is an aborted landing of an aircraft that is on final approach or has already touched down. A go-around can either be initiated by the pilot flying or requested by air traffic control for various reasons, such as an unstabilized approach or an obstruction on the runway. Etymology The term arises from the traditional use of traffic patterns at airfields. A landing aircraft will first join the traffic pattern/circuit and prepare for landing. If for some reason, the pilot decides not to land, the pilot can simply fly back up to traffic pattern altitude/circuit height, and complete another circuit. The term "go-around" is still used even for modern airliners, though they often do not use traditional traffic patterns/circuits for landing, instead using an airport-specific go-around procedure. Reasons for use Initiation of a go-around may be either ordered by air traffic control (normally the local or tower controller in a controlled field) or initiated b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Go-around
In aviation, a go-around is an aborted landing of an aircraft that is on Final_approach_(aeronautics), final approach or has already touched down. A go-around can either be initiated by the pilot flying or requested by air traffic control for various reasons, such as an unstabilized approach or an obstruction on the runway. Etymology The term arises from the traditional use of Airfield traffic pattern, traffic patterns at airfields. A landing aircraft will first join the traffic pattern/circuit and prepare for landing. If for some reason, the pilot decides not to land, the pilot can simply fly back up to traffic pattern altitude/circuit height, and complete another circuit. The term "go-around" is still used even for modern airliners, though they often do not use traditional traffic patterns/circuits for landing, instead using an airport-specific go-around procedure. Reasons for use Initiation of a go-around may be either ordered by air traffic control (normally the local or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Control Tower
Air traffic control (ATC) is a service provided by ground-based air traffic controllers who direct aircraft on the ground and through a given section of controlled airspace, and can provide advisory services to aircraft in non-controlled airspace. The primary purpose of ATC is to prevent collisions, organise and expedite the flow of traffic in the air, and provide information and other support for pilots. Personnel of air traffic control monitor aircraft location in their assigned airspace by radar and communicate with the pilots by radio. To prevent collisions, ATC enforces traffic separation rules, which ensure each aircraft maintains a minimum amount of 'empty space' around it at all times. It is also common for ATC to provide services to all private, military, and commercial aircraft operating within its airspace; not just civilian aircraft. Depending on the type of flight and the class of airspace, ATC may issue ''instructions'' that pilots are required to obey, or ' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Instrument Landing System Glide Path
In aviation, instrument landing system glide path, commonly referred to as a glide path (G/P) or glide slope (G/S), is "a system of vertical guidance embodied in the instrument landing system which indicates the vertical deviation of the aircraft from its optimum path of descent". Principle of operation A glide slope station uses a phased antenna array sited on a tower which is offset approximately 250 to 650' to one side of the runway centerline and approximately 750 to 1250' beyond the approach end of the runway, adjacent to the runway touchdown zone. The GS transmits in the 328 to 336 MHz ultra high frequency (UHF) portion of the electromagnetic spectrum. Similar to the localizer, the GS signal is amplitude modulated with 90 and 150 Hz audio tones and transmitted on a carrier signal. The centre of the glide slope signal is arranged to define a glide path of approximately 3° above horizontal (ground level). Carrier frequency pairings Localizer (LOC) and glide s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Air Brake (aeronautics)
In aeronautics, air brakes, or speed brakes, are a type of flight control surface used on an aircraft to increase the Drag (physics), drag on the aircraft. When extended into the airstream, air brakes cause an increase in the drag on the aircraft. When not in use, they conform to the local streamlined profile of the aircraft in order to help minimize drag. Air brakes differ from Spoiler (aeronautics), spoilers in that air brakes are designed to increase Aerodynamic drag, drag while making little change to Lift (force), lift, whereas spoilers reduce the lift-to-drag ratio and require a higher angle of attack to maintain lift, resulting in a higher stall speed. However, flight spoilers are routinely referred to as "speed brakes" on transport aircraft by pilots and manufacturers, despite significantly reducing lift. History In the early decades of powered flight, air brakes were flaps mounted on the wings. They were manually controlled by a lever in the cockpit, and mechani ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Autothrottle
An autothrottle (automatic throttle; also known as autothrust, A/T, or A/THR) is a system that allows a pilot to control the power setting of an aircraft's engines by specifying a desired flight characteristic, rather than manually controlling the fuel flow. The autothrottle can greatly reduce the pilots' workload and help conserve fuel and extend engine life by metering the precise amount of fuel required to attain a specific target indicated air speed, or the assigned power for different phases of flight. A/T and AFDS (Auto Flight Director Systems) can work together to fulfill the whole flight plan. Working modes There are two parameters that an A/T can maintain, or try to attain: speed and thrust. In speed mode the throttle is positioned to attain a set target speed, subject to safe operating margins. For example, if the pilot selects a target speed which is slower than stall speed, the autothrottle system maintains a speed above the stall speed. In the thrust mode the engi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thrust Lever
Thrust levers or throttle levers are found in the cockpit of aircraft, and are used by the Pilot in command, pilot, copilot, flight engineer, or autopilot to control the thrust output of the aircraft's aircraft engine, engines, by controlling the fuel flow to those engines. Throttle levers are also used on many boats. In multi-engine aircraft, each thrust lever displays the Aircraft engine position number, engine number of the engine it controls. Normally, there is one thrust lever for each engine. The thrust levers are normally found in the aircraft's center console, or on the dashboard of smaller aircraft. For aircraft equipped with thrust reversal, the control for each thrust reverser is usually found adjacent to the corresponding engine's thrust lever. The position of each lever can be described by the current angle indicated. This is referred to as the ''throttle lever angle'' (TLA). The greater the TLA, the greater the engine thrust. The throttle lever assembly is ofte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Royal Aeronautical Society
The Royal Aeronautical Society, also known as the RAeS, is a British multi-disciplinary professional institution dedicated to the global aerospace community. Founded in 1866, it is the oldest Aeronautics, aeronautical society in the world. Members, Fellows, and Companions of the society can use the post-nominal letters MRAeS, FRAeS, or CRAeS, respectively. Function The objectives of The Royal Aeronautical Society include: to support and maintain high professional standards in aerospace disciplines; to provide a unique source of specialist information and a local forum for the exchange of ideas; and to exert influence in the interests of aerospace in the public and industrial arenas, including universities. The Royal Aeronautical Society is a worldwide society with an international network of 67 branches. Many practitioners of aerospace disciplines use the Society's designatory Post-nominal letters, post-nominals such aFRAeS CRAeS, MRAeS, AMRAeS, and ARAeS (incorporating the fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Height Above Ground Level
In aviation, atmospheric sciences and broadcasting, a height above ground level (AGL or HAGL) is a height measured with respect to the underlying ground surface. This is as opposed to height above mean sea level (AMSL or HAMSL), height above ellipsoid (HAE, as reported by a GPS receiver), or height above average terrain (AAT or HAAT, in broadcast engineering). In other words, these expressions (AGL, AMSL, HAE, AAT) indicate where the "zero level" or "reference altitude" – the vertical datum – is located. Aviation A pilot flying an aircraft under instrument flight rules (typically under poor visibility conditions) must rely on the aircraft's altimeter to decide when to deploy the undercarriage and prepare for landing. Therefore, the pilot needs reliable information on the height of the plane with respect to the landing area (usually an airport). The altimeter, which is usually a barometer calibrated in units of distance instead of atmospheric pressure, can therefore be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Embry–Riddle Aeronautical University
Embry-Riddle Aeronautical University (ERAU) is a private university focused on aviation and aerospace programs based in Daytona Beach, Florida, and Prescott, Arizona, United States. It is the largest accredited university system specializing in aviation and aerospace. It has numerous online programs and academic programs offered at satellite locations. Founded at Cincinnati Municipal Lunken Airport, Lunken Field in Cincinnati in 1926, it began as a regional school for pilots and aircraft mechanics. With the expansion and development of aviation and related space programs, the university enrolls almost 31,000 undergraduate and graduate students. History On December 17, 1925, Talton Higbee Embry and John Paul Riddle founded the Embry–Riddle Company at Lunken Airport in Cincinnati, Ohio. In spring 1926, the company opened the Embry–Riddle School of Aviation. Following a merger with the Avco, Aviation Corporation (AVCO), the Embry–Riddle flying school was closed in 1930. In ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Runway Excursion
A runway excursion is a runway safety incident in which an aircraft makes an inappropriate exit from the runway. This happens mainly due to late landings or inappropriate runway choice. There are several types of runway excursions: * A departing aircraft fails to become airborne or successfully reject the takeoff before reaching the end of the designated runway. * A landing aircraft is unable to stop before the end of the designated runway is reached, causing it to keep moving and leave the runway. * An aircraft taking off, rejecting takeoff or landing departs the side of the designated runway, not airborne. When an aircraft exits the end of the runway, this is referred to as runway overrun (or informally, runway overshoot). Runway excursions can happen because of pilot error, poor weather, or a fault with the aircraft. Runway excursions may occur both during takeoff or landing. According to the Flight Safety Foundation, as of 2008, runway excursions were the most frequent ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flight Safety Foundation
The Flight Safety Foundation (FSF) is a non-profit, international organization concerning research, education, advocacy, and communications in the field of aviation safety. FSF brings together aviation professionals to help solve safety problems and bring an international perspective to aviation safety-related issues for the public. History Since its founding in 1945, the foundation has acted as a non-profit, independent clearinghouse to disseminate safety information, identify threats to safety, and recommend practical solutions, like, for example, the Approach and Landing Accident Reduction (ALAR) toolkit. Today, the foundation provides leadership to more than 1000 members in more than 100 countries. The Aviation Crash Injury Research (AvCIR) Division initiated by Hugh DeHaven became part of FSF in April 1959, being transferred from Cornell University Cornell University is a Private university, private Ivy League research university based in Ithaca, New York, Unite ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
General Aviation
General aviation (GA) is defined by the International Civil Aviation Organization (ICAO) as all civil aviation aircraft operations except for commercial air transport or aerial work, which is defined as specialized aviation services for other purposes. However, for statistical purposes, ICAO uses a definition of general aviation which includes aerial work. General aviation thus represents the " private transport" and recreational components of aviation, most of which is accomplished with light aircraft. Definition The International Civil Aviation Organization (ICAO) defines civil aviation aircraft operations in three categories: General Aviation (GA), Aerial Work (AW) and Commercial Air Transport (CAT). Aerial work operations are separated from general aviation by ICAO by this definition. Aerial work is when an aircraft is used for specialized services such as agriculture, construction, photography, surveying, observation and patrol, search and rescue, and aerial adver ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
