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Northwest Airlink Flight 5719
Northwest Airlink Flight 5719 was a flight from Minneapolis-Saint Paul International Airport to International Falls Airport in International Falls, Minnesota with a scheduled intermediate stop at Chisholm-Hibbing Airport in Hibbing, Minnesota. On December 1, 1993, the Jetstream 31, operated by Express Airlines I as Northwest Airlink, collided with a group of trees in a forest during final approach to Hibbing, and crashed into two ridges northwest of the airport, killing all sixteen passengers and the two pilots on board. Passengers and crew There were 16 passengers on board the Jetstream 31, a twin-engine turboprop manufactured by British Aerospace, for a flight from Minneapolis-Saint Paul International Airport, in Hennepin County, Minnesota, with a stop at Chisholm-Hibbing Airport, in Hibbing. There were two pilots operating the aircraft: the captain was Marvin Falitz (42); the first officer was Chad Erickson (25). At the time of this flight, Erickson had 65 hours experience ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
BAe Jetstream 31
The British Aerospace Jetstream is a small twin- turboprop airliner, with a pressurised fuselage, developed as the ''Jetstream 31'' from the earlier Handley Page Jetstream. A larger version of the Jetstream was also manufactured, the British Aerospace Jetstream 41. Development Scottish Aviation had taken over production of the original Jetstream design from Handley Page, and when it was nationalised along with other British companies into British Aerospace (later BAE Systems) in 1978, British Aerospace decided the design was worth further development, and started work on a "Mark 3" Jetstream. As with the earlier 3M version for the USAF, the new version was re-engined with newer Garrett turboprops (now Honeywell TPE331) which offered more power (flat rated to 1,020 shp/760 kW with a thermodynamic limit of 1,100 shp/820 kW) and longer overhaul intervals over the original Turbomeca Astazou engines. This allowed the aircraft to be offered in an 18-seat op ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Turboprop
A turboprop is a turbine engine that drives an aircraft propeller. A turboprop consists of an intake, reduction gearbox, compressor, combustor, turbine, and a propelling nozzle. Air enters the intake and is compressed by the compressor. Fuel is then added to the compressed air in the combustor, where the fuel-air mixture then combusts. The hot combustion gases expand through the turbine stages, generating power at the point of exhaust. Some of the power generated by the turbine is used to drive the compressor and electric generator. The gases are then exhausted from the turbine. In contrast to a turbojet or turbofan, the engine's exhaust gases do not provide enough energy to create significant thrust, since almost all of the engine's power is used to drive the propeller. Technological aspects Exhaust thrust in a turboprop is sacrificed in favor of shaft power, which is obtained by extracting additional power (beyond that necessary to drive the compressor) from turbine ex ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radio Navigation
Radio navigation or radionavigation is the application of radio frequencies to determine a position of an object on the Earth, either the vessel or an obstruction. Like radiolocation, it is a type of radiodetermination. The basic principles are measurements from/to electric beacons, especially * Angular directions, e.g. by bearing, radio phases or interferometry, * Distances, e.g. ranging by measurement of time of flight between one transmitter and multiple receivers or vice versa, * Distance ''differences'' by measurement of times of arrival of signals from one transmitter to multiple receivers or vice versa * Partly also velocity, e.g. by means of radio Doppler shift. Combinations of these measurement principles also are important—e.g., many radars measure range and azimuth of a target. Bearing-measurement systems These systems used some form of directional radio antenna to determine the location of a broadcast station on the ground. Conventional navigation techniques a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
VHF Omnidirectional Range
Very high frequency omnirange station (VOR) is a type of short-range radio navigation system for aircraft, enabling aircraft with a receiving unit to determine its position and stay on course by receiving radio signals transmitted by a network of fixed ground radio beacons. It uses frequencies in the very high frequency (VHF) band from 108.00 to 117.95 MHz. Developed in the United States beginning in 1937 and deployed by 1946, VOR became the standard air navigational system in the world,VOR VHF omnidirectional Range , Aviation Tutorial – Radio Navaids, kispo.net used by both commercial and general aviation, until supplanted by satellite navigation systems such as in th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Distance Measuring Equipment (aviation)
In aviation, distance measuring equipment (DME) is a radio navigation technology that measures the slant range (distance) between an aircraft and a ground station by timing the propagation delay of radio signals in the frequency band between 960 and 1215 megahertz (MHz). Line-of-visibility between the aircraft and ground station is required. An interrogator (airborne) initiates an exchange by transmitting a pulse pair, on an assigned 'channel', to the transponder ground station. The channel assignment specifies the carrier frequency and the spacing between the pulses. After a known delay, the transponder replies by transmitting a pulse pair on a frequency that is offset from the interrogation frequency by 63 MHz and having specified separation.''Annex 10 to the Convention on International Civil Aviation, Volume I – Radio Navigation Aids''; International Civil Aviation Organization; International Standards and Recommended Practices. DME systems are used worldwide, usi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aviation Safety Network
The Flight Safety Foundation (FSF) is an independent, nonprofit, international organization concerning research, education, advocacy, and communications in the field of aviation safety. FSF brings together aviation professionals from all sectors to help solve safety problems facing the industry. With a membership that spreads throughout the world, FSF brings an international perspective to aviation issues for its members, the media, and the traveling public. History Since its founding in 1947, the foundation has acted as a non-profit, independent clearinghouse to disseminate safety information, identify threats to safety, and recommend practical solutions. Today, the foundation provides leadership to more than 1200 members in more than 75 countries. AvCIR The Aviation Crash Injury Research (AvCIR) Division became part of FSF in April 1959, being transferred from Cornell University.''Army Aviation Safety - Crash Injury, Crashworthiness'', AvCIR 70-0-128, Flight Safety Foundation, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Headwind And Tailwind
A tailwind is a wind that blows in the direction of travel of an object, while a headwind blows against the direction of travel. A tailwind increases the object's speed and reduces the time required to reach its destination, while a headwind has the opposite effect. The terms are also used metaphorically in business and elsewhere about circumstances where progress is made harder (headwind) or easier (tailwind). Travel In aeronautics, a headwind is favorable in takeoffs and landings because an airfoil moving into a headwind is capable of generating greater lift than the same airfoil moving through tranquil air, or with a tailwind, at equal ground speed. As a result, aviators and air traffic controllers commonly choose to take off or land in the direction of a runway that will provide a headwind. Aircraft carriers usually turn into the wind during takeoffs and landings, and may increase their own speed. While on take-off and landing, headwinds are good because they allow the ai ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Landing
Landing is the last part of a flight, where a flying animal, aircraft, or spacecraft returns to the ground. When the flying object returns to water, the process is called alighting, although it is commonly called "landing", "touchdown" or " splashdown" as well. A normal aircraft flight would include several parts of flight including taxi, takeoff, climb, cruise, descent and landing. Aircraft Aircraft usually land at an airport on a firm runway or helicopter landing pad, generally constructed of asphalt concrete, concrete, gravel or grass. Aircraft equipped with pontoons (floatplane) or with a boat hull-shaped fuselage (a flying boat) are able to land on water. Aircraft also sometimes use skis to land on snow or ice. To land, the airspeed and the rate of descent are reduced such that the object descends at a low enough rate to allow for a gentle touch down. Landing is accomplished by slowing down and descending to the runway. This speed reduction is accomplished by re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lakeland, Florida
Lakeland is the most populous city in Polk County, Florida, part of the Tampa Bay Area, located along Interstate 4 east of Tampa. According to the 2020 U.S. Census Bureau release, the city had a population of 112,641. Lakeland is a principal city of the Lakeland–Winter Haven Metropolitan Statistical Area. European-American settlers arrived in Lakeland from Missouri, Kentucky, Tennessee, Georgia and South Carolina in the 1870s. The city expanded in the 1880s with the arrival of rail service, with the first freedmen railway workers settling here in 1883.Kimberly C. Moore, "Confederate vets, former slaves form Lakeland’s history" ''The Ledger'', 09 May 2018; accessed 27 June 2018 They and European immigrants also came ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Ledger
''The Ledger'' is a daily newspaper serving Lakeland, Florida, and the Polk County area. The paper was founded on August 22, 1924, as the ''Lakeland Evening Ledger''. In 1927, it bought its main competitor, the morning ''Lakeland Star-Telegram''. By 1930, it was obvious that Lakeland could not support two papers, so Ledger Publishing Company merged the two papers into a single morning paper, the ''Lakeland Ledger and Star-Telegram''. In 1941, ''Star-Telegram'' was dropped from the masthead, and in 1967 the name was shortened to simply ''The Ledger''. The New York Times Company bought ''The Ledger'' in 1970 and owned it until 2012, when it sold its entire regional newspaper group to Halifax Media. In 2015, Halifax was acquired by New Media Investment Group. Jerome Ferson became publisher of the newspaper on July 30, 2007. Kevin Drake became publisher of the newspaper on January 21, 2014. In October 2016, Drake left ''The Ledger'' to return to his hometown of Spartanburg, Sout ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Landing Lights
Landing lights are lights, mounted on aircraft, that illuminate the terrain and runway ahead during takeoff and landing, as well as being used as a collision avoidance measure against other aircraft and bird strikes. Overview Almost all modern aircraft are equipped with landing lights if approved for nighttime operations. Landing lights are usually of very high intensity, because of the considerable distance that may separate an aircraft from terrain or obstacles. The landing lights of large aircraft can easily be seen by other aircraft over 100 miles away. Key considerations of landing light design include intensity, reliability, weight, and power consumption. Ideal landing lights are extremely intense, require little electrical power, are lightweight, and have long and predictable service lives. Past and present technologies include ordinary incandescent lamps, halogen lamps, various forms of arc lamps and discharge lamps, and LED lamps. Landing lights are typically only ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Washington Post
''The Washington Post'' (also known as the ''Post'' and, informally, ''WaPo'') is an American daily newspaper published in Washington, D.C. It is the most widely circulated newspaper within the Washington metropolitan area and has a large national audience. Daily broadsheet editions are printed for D.C., Maryland, and Virginia. The ''Post'' was founded in 1877. In its early years, it went through several owners and struggled both financially and editorially. Financier Eugene Meyer purchased it out of bankruptcy in 1933 and revived its health and reputation, work continued by his successors Katharine and Phil Graham (Meyer's daughter and son-in-law), who bought out several rival publications. The ''Post'' 1971 printing of the Pentagon Papers helped spur opposition to the Vietnam War. Subsequently, in the best-known episode in the newspaper's history, reporters Bob Woodward and Carl Bernstein led the American press's investigation into what became known as the Watergate scandal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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