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Jet Blast
Jet blast is the phenomenon of rapid air movement produced by the jet engines of aircraft, particularly on or before takeoff. A large jet-engine aircraft can produce winds of up to as far away as behind it at 40% maximum rated power. Jet blast can be a hazard to people or other unsecured objects, and can reach wind speeds comparable to those of a Category 5 hurricane, causing roof failure or total collapse in buildings, and severely damaging or destroying things like mobile homes, utility buildings, and trees. Despite the power and potentially destructive nature of jet blast, there are relatively few jet blast incidents. Due to the invisible nature of jet blast and the aerodynamic properties of light aircraft, light aircraft moving about airports are particularly vulnerable. Pilots of light aircraft frequently stay off to the side of the runway, rather than follow in the centre, to negate the effect of the blast. Occasionally, when the ground surface is badly chosen, jet bla ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Skiathos Airport
Skiathos Alexandros Papadiamantis Airport is an airport on the island of Skiathos, Greece. Its runway is able to accommodate aircraft up to the size of a Boeing 757-200. The runway is characterised as 'short and narrow'. Because of the uneven terrain on the island of Skiathos, Skiathos Airport was created by reclaiming land from the sea between Skiathos island and the smaller island of Lazareta (a former leper colony) effectively joining the two islands into one larger island, though it was built on land already part of Skiathos. The location was chosen by a mechanic who lived in Volos. The airport is named after Alexandros Papadiamantis, a Greek novelist and native of the island. The airport's short runway and its proximity to an adjacent public road have made it a popular destination for planespotters. It is often compared to Princess Juliana International Airport on Saint Maarten since both airports offer the public an ability to legally experience landing approaches and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aviation Safety
Aviation safety is the study and practice of managing risks in aviation. This includes preventing aviation accidents and incidents through research, educating air travel personnel, passengers and the general public, as well as the design of aircraft and aviation infrastructure. The aviation industry is subject to significant regulations and oversight. Aviation security is focused on protecting air travelers, aircraft and infrastructure from intentional harm or disruption, rather than unintentional mishaps. Statistics Evolution Aviation is safer today than it has ever been. Modern commercial aviation boasts an accident rate of approximately 1 fatal accident per 16 million flights, far lower than historic numbers. On December 14, 1903, the Wright Brothers conducted a test flight of their powered airplane from the slope of Big Kill Devil Hill in North Carolina. Upon takeoff, the airplane lifted about 15 feet off the ground, stalled, and crashed into the sand. Only three da ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aircraft Engines
An aircraft engine, often referred to as an aero engine, is the power component of an aircraft Air propulsion, propulsion system. Aircraft using power components are referred to as powered flight. Most aircraft engines are either Reciprocating engine, piston engines or gas turbines, although a few have been Rocket-powered aircraft, rocket powered and in recent years many small UAVs have used electric motors. Manufacturing industry The largest manufacturer of turboprop engines for general aviation is Pratt & Whitney. General Electric announced in 2015 entrance into the market. Development history * 1903: Manly-Balzer engine sets standards for later radial engines. * 1910: Coandă-1910, an unsuccessful ducted fan aircraft exhibited at Paris Aero Salon, powered by a piston engine. The aircraft never flew, but a patent was filed for routing exhaust gases into the duct to augment thrust. * 1914: Auguste Rateau suggests using exhaust-powered compressor – a turbocharger – to imp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aircraft Aerodynamics
An aircraft ( aircraft) is a vehicle that is able to flight, fly by gaining support from the Atmosphere of Earth, air. It counters the force of gravity by using either Buoyancy, static lift or the Lift (force), dynamic lift of an airfoil, or, in a few cases, direct Powered lift, downward thrust from its engines. Common examples of aircraft include airplanes, rotorcraft (including helicopters), airships (including blimps), Glider (aircraft), gliders, Powered paragliding, paramotors, and hot air balloons. Part 1 (Definitions and Abbreviations) of Subchapter A of Chapter I of Title 14 of the U. S. Code of Federal Regulations states that aircraft "means a device that is used or intended to be used for flight in the air." The human activity that surrounds aircraft is called ''aviation''. The science of aviation, including designing and building aircraft, is called ''aeronautics.'' Aircrew, Crewed aircraft are flown by an onboard Aircraft pilot, pilot, whereas unmanned aerial vehicles ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Air Moorea Flight 1121
Air Moorea Flight 1121 was a de Havilland Canada DHC-6 Twin Otter which crashed into the ocean shortly after takeoff from Moorea Airport on Moorea Island in French Polynesia on 9 August 2007 killing all 20 people on board. It was bound for Tahiti's Faaʻa International Airport on a regular 7-minute service, one of the shortest on earth, scheduled a day. The crash resulted from loss of control due to failure of the airplane's elevator cable. Frequent takeoff and landing are believed to have been a major factor in the crash, because of wear and tear on the elevator cables, inspected only at fixed time intervals, regardless of usage. Another factor may have been jet-blast from large planes pushing back from the ramp at Fa'a'ā International. Background The aircraft, registration F-OIQI, serial number 608, was a de Havilland Canada DHC-6-300 Twin Otter powered by two Pratt & Whitney Canada PT6A-27. As of 8 August 2007, the airframe had flown 55,044 cycles in approximately 30, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prop Wash
A prop, formally known as a (theatrical) property, is an object actors use on stage or screen during a performance or screen production. In practical terms, a prop is considered to be anything movable or portable on a stage or a set, distinct from the actors, scenery, costumes, and electrical equipment. This includes handheld items such as books, cups, weapons, and tools that actors interact with during a performance. Props help to create a realistic setting, convey information, or add to the storytelling by showing details about the characters or the environment. Term The earliest known use of the term "properties" in English to refer to stage accessories is in the 1425 CE morality play, ''The Castle of Perseverance''. During the Renaissance in Europe, small acting troupes functioned as cooperatives, pooling resources and dividing any income. Many performers provided their own costumes and small objects needed for performance, hence the term "property" suggesting these items ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Propeller (aircraft)
In aeronautics, an aircraft propeller, also called an airscrew,Beaumont, R.A.; ''Aeronautical Engineering'', Odhams, 1942, Chapter 13, "Airscrews". converts rotary motion from an engine or other power source into a swirling slipstream which pushes the propeller forwards or backwards. It comprises a rotating power-driven hub, to which are attached several radial airfoil-section blades such that the whole assembly rotates about a longitudinal axis. The blade pitch may be fixed, manually variable to a few set positions, or of the automatically variable "constant-speed" type. The propeller attaches to the power source's driveshaft either directly or through reduction gearing. Propellers can be made from wood, metal or composite materials. Propellers are most suitable for use at subsonic airspeeds generally below about , although supersonic speeds were achieved in the McDonnell XF-88B experimental propeller-equipped aircraft. Supersonic tip-speeds are used in some aircraft like the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
BNO News
BNO News is an international news agency headquartered in Tilburg, the Netherlands. It provides news wire services to media organizations. Overview BNO News was founded by Michael van Poppel of the Netherlands in May 2007. The company ran a popular Twitter-based news service called ''BreakingNews'' (initially called BreakingNewsOn) until December 1, 2009. It scooped regular news organizations on political news, natural disasters, and other breaking news and grew quickly in 2009, when it went from 16,000 to more than 1.5 million followers in less than 11 months, making it one of the most popular news services on Twitter. The service was maintained by journalists from the Netherlands, Ireland, Mexico, and the United States. On September 7, 2007, BNO News obtained an authentic videotape featuring Al-Qaeda leader Osama bin Laden, which it licensed to the Reuters news agency. In February 2009, BNO News won the Best in News award at the 1st Shorty Awards in New York. The Twitter ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jet Engine
A jet engine is a type of reaction engine, discharging a fast-moving jet (fluid), jet of heated gas (usually air) that generates thrust by jet propulsion. While this broad definition may include Rocket engine, rocket, Pump-jet, water jet, and hybrid propulsion, the term typically refers to an internal combustion airbreathing jet engine, air-breathing jet engine such as a turbojet, turbofan, ramjet, pulse jet engine, pulse jet, or scramjet. In general, jet engines are internal combustion engines. Air-breathing jet engines typically feature a Axial compressor, rotating air compressor powered by a turbine, with the leftover power providing thrust through the propelling nozzle—this process is known as the Brayton cycle, Brayton thermodynamic cycle. Jet aircraft use such engines for long-distance travel. Early jet aircraft used turbojet engines that were relatively inefficient for subsonic flight. Most modern subsonic jet aircraft use more complex High-bypass turbofan, high-bypas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Princess Juliana International Airport
Princess Juliana International Airport is the main airport on the Caribbean island of Saint Martin. The airport is located on the Dutch side of the island, in the country of Sint Maarten, close to the shore of Simpson Bay Lagoon. In 2015, the airport handled 1,829,543 passengers and around 60,000 aircraft movements. The airport serves as a hub for Winair and is the major gateway for the smaller Leeward Islands, including Anguilla, Saba, Saint Barthélemy and Sint Eustatius. It is named after Queen Juliana of the Netherlands, who landed there while she was heir presumptive in 1944, the year after the airport opened. The airport has very low-altitude flyover landing approaches because one end of its runway is extremely close to the shore and Maho Beach. While Princess Juliana International is the primary aviation gateway to the island, there is also a smaller public-use airport on the French side, in the French Collectivity of Saint Martin, called Grand Case-Espérance Airport. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sint Maarten
Sint Maarten () is a Countries of the Kingdom of the Netherlands, constituent country of the Kingdom of the Netherlands located in the Caribbean region of North America. With a population of 58,477 as of June 2023 on an area of , it encompasses the southern 44% of the divided island of Saint Martin (island), Saint Martin, while the northern 56% of the island constitutes the French overseas collectivity of Collectivity of Saint Martin, Saint Martin. Sint Maarten's Capital city, capital is Philipsburg, Sint Maarten, Philipsburg. Collectively, Sint Maarten and the other List of islands of the Netherlands, Dutch islands in the Caribbean are often called the Dutch Caribbean. Before 10 October 2010, Sint Maarten was known as the Island Territory of Sint Maarten (), and was one of six (from 1986 five) Island territories of the Netherlands Antilles, island territories () that constituted the Netherlands Antilles. Sint Maarten has the status of an EU overseas country; it is not part of th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
