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G-LOC
g-force induced loss of consciousness (abbreviated as G-LOC, pronounced "JEE-lock") is a term generally used in aerospace physiology to describe a loss of consciousness occurring from excessive and sustained g-forces draining blood away from the brain causing cerebral hypoxia. The condition is most likely to affect pilots of high performance fighter and aerobatic aircraft or astronauts but is possible on some extreme amusement park rides. G-LOC incidents have caused fatal accidents in high performance aircraft capable of sustaining high ''g'' for extended periods. High-g training for pilots of high performance aircraft or spacecraft often includes ground training for G-LOC in special centrifuges, with some profiles exposing pilots to 9 ''g''s for a sustained period. Effects of ''g''-forces Under increasing positive ''g''-force, blood in the body will tend to move from the head toward the feet. For higher intensity or longer duration, this can manifest progressively as: ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aerospace Physiology
Aerospace physiology is the study of the effects of high altitudes on the body, such as different pressures and levels of oxygen. At different altitudes the body may react in different ways, provoking more cardiac output, and producing more erythrocytes. These changes cause more energy waste in the body, causing muscle fatigue, but this varies depending on the level of the altitude. Effects of altitude The physics that affect the body in the sky or in space are different from the ground. For example, barometric pressure is different at different heights. At sea level barometric pressure is 760 mmHg; at 3.048 m above sea level, barometric pressure is 523 mmHg, and at 15.240 m, the barometric pressure is 87 mmHg. As the barometric pressure decreases, atmospheric partial pressure decreases also. This pressure is always below 20% of the total barometric pressure. At sea level, alveolar partial pressure of oxygen is 104 mmHg, reaching 6000 meters above the sea level. This pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Human Anatomical Terms
Anatomical terminology is a form of scientific terminology used by anatomists, zoologists, and health professionals such as doctors. Anatomical terminology uses many unique terms, suffixes, and prefixes deriving from Ancient Greek and Latin. These terms can be confusing to those unfamiliar with them, but can be more precise, reducing ambiguity and errors. Also, since these anatomical terms are not used in everyday conversation, their meanings are less likely to change, and less likely to be misinterpreted. To illustrate how inexact day-to-day language can be: a scar "above the wrist" could be located on the forearm two or three inches away from the hand or at the base of the hand; and could be on the palm-side or back-side of the arm. By using precise anatomical terminology such ambiguity is eliminated. An international standard for anatomical terminology, '' Terminologia Anatomica'' has been created. Word formation Anatomical terminology has quite regular morphology: ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Articles Containing Video Clips
Article often refers to: * Article (grammar), a grammatical element used to indicate definiteness or indefiniteness * Article (publishing), a piece of nonfictional prose that is an independent part of a publication Article may also refer to: Government and law * Article (European Union), articles of treaties of the European Union * Articles of association, the regulations governing a company, used in India, the UK and other countries * Articles of clerkship, the contract accepted to become an articled clerk * Articles of Confederation, the predecessor to the current United States Constitution *Article of Impeachment, a formal document and charge used for impeachment in the United States * Articles of incorporation, for corporations, U.S. equivalent of articles of association * Articles of organization, for limited liability organizations, a U.S. equivalent of articles of association Other uses * Article, an HTML element, delimited by the tags and * Article of clothing, an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Euthanasia Coaster
The Euthanasia Coaster is a hypothetical steel roller coaster designed as a euthanasia device to kill its passengers. The concept was conceived in 2010 and made into a scale model by Lithuanian artist Julijonas Urbonas, a PhD candidate at the Royal College of Art in London. Urbonas, who has experience as an amusement park employee, stated that the goal of his concept roller coaster is to take lives "with elegance and euphoria". As for practical applications of his design, Urbonas mentioned "euthanasia" or "execution". John Allen, who served as president of the Philadelphia Toboggan Company, inspired Urbonas with his description of the "ultimate" roller coaster as one that "sends out 24 people and they all come back dead". Design The concept design of the layout begins with a steep-angled lift that takes riders up to the top, a climb that takes a few minutes to reach. For comparison, the tallest rollercoaster is the Kingda Ka at . From there, a drop would take the train to , cl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Champ Car
Champ Car World Series (CCWS) was the series sanctioned by Open-Wheel Racing Series Inc., or Champ Car, a sanctioning body for American open-wheel car racing that operated from 2004 to 2008. It was the successor to Championship Auto Racing Teams (CART), which sanctioned the 'PPG Indy Car World Series from 1979 until dissolving after the 2003 season. Vehicles Champ Cars were single-seat, open-wheel racing cars, with mid-mounted engines. Champ cars had sculpted undersides to create ground effect and prominent wings to create downforce. The cars would use a different aerodynamic kit on the occasions they raced on an oval. With funds low, development was effectively frozen with a focus on developing a universal chassis, and the series generally ran on CART-spec 2002 Lola chassis from 2003 to 2006. The new chassis was developed by Panoz and debuted in 2007 as the Panoz DP01. The chassis was well received by drivers and fans. The series leased 750hp 2.65 L V-8 turbocharge ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Firestone Firehawk 600
The Firestone Firehawk 600 was a CART series auto race scheduled for April 29, 2001 at the Texas Motor Speedway in Fort Worth, Texas, United States. It was scheduled for 248 laps around the oval at TMS. However, it was postponed and ultimately cancelled due to concerns about driver safety. It was the only race in CART history that was canceled outright for safety reasons. The race was sponsored by Firestone and Pioneer Corporation. Background The Firestone Firehawk 600 was to be the second attempt to run an open-wheel race on a high-banked oval. Texas Motor Speedway, which opened in 1997, is classified as an intermediate oval with a length of . The turns are banked at 24°. By comparison, the turns at Indianapolis are only banked at 9°, and those at Michigan are 18°. Texas Motor Speedway was originally designed with a dual-banking layout. The steep 24° banking on top would accommodate NASCAR races. A secondary 8° banking below was designed for the faster open-wheel machine ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Redout
A redout occurs when the body experiences a negative g-force sufficient to cause a blood flow from the lower parts of the body to the head. It is the inverse effect of a greyout, where blood flows away from the head to the lower parts of the body. Usually, a redout will only ever be experienced by pilots, as planes are the most common devices that allow such negative g-forces to be exerted. Redouts are potentially dangerous and can cause retinal damage and hemorrhagic stroke. According to the predominant theory, the redness appearing in the visual field is not caused by an actual blood flow to the eye, but it is most likely caused by the blood-laden lower eyelid coming into the visual field because of the pull of negative-Gs. See also *Greyout *Fainting *Presyncope Lightheadedness is a common and typically unpleasant sensation of dizziness or a feeling that one may faint. The sensation of lightheadedness can be short-lived, prolonged, or, rarely, recurring. In addition to diz ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Junkers Ju 87
The Junkers Ju 87 or Stuka (from ''Sturzkampfflugzeug'', "dive bomber") was a German dive bomber and ground-attack aircraft. Designed by Hermann Pohlmann, it first flew in 1935. The Ju 87 made its combat debut in 1937 with the Luftwaffe's Condor Legion during the Spanish Civil War of 1936–1939 and served the Axis in World War II from beginning to end (1939–1945). The aircraft is easily recognisable by its inverted gull wings and fixed spatted undercarriage. Upon the leading edges of its faired main gear legs were mounted ram-air sirens known as ', which became a propaganda symbol of German air power and of the so-called '' Blitzkrieg'' victories of 1939–1942, as well as providing Stuka pilots with audible feedback as to speed. The Stuka's design included several innovations, including automatic pull-up dive brakes under both wings to ensure that the aircraft recovered from its attack dive even if the pilot blacked out from the high g-forces. The Ju 87 operate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
G-suit
A g-suit, or anti-''g'' suit, is a flight suit worn by aviators and astronauts who are subject to high levels of acceleration force ( g). It is designed to prevent a black-out and g-LOC (g-induced loss of consciousness) caused by the blood pooling in the lower part of the body when under acceleration, thus depriving the brain of blood. Black-out and g-LOC have caused a number of fatal aircraft accidents. Operation If blood is allowed to pool in the lower areas of the body, the brain will be deprived of blood. This lack of blood flow to the brain first causes a greyout (a dimming of the vision also called brownout), followed by tunnel vision and ultimately complete loss of vision 'blackout' followed by g-induced Loss Of Consciousness or 'g-LOC'. The danger of g-LOC to aircraft pilots is magnified because on relaxation of g-force there is a period of disorientation before full sensation is re-gained. A g-suit does not so much increase the g-threshold, but makes it possible to su ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Independent
''The Independent'' is a British online newspaper. It was established in 1986 as a national morning printed paper. Nicknamed the ''Indy'', it began as a broadsheet and changed to tabloid format in 2003. The last printed edition was published on Saturday 26 March 2016, leaving only the online edition. The newspaper was controlled by Tony O'Reilly's Irish Independent News & Media from 1997 until it was sold to the Russian oligarch and former KGB Officer Alexander Lebedev in 2010. In 2017, Sultan Muhammad Abuljadayel bought a 30% stake in it. The daily edition was named National Newspaper of the Year at the 2004 British Press Awards. The website and mobile app had a combined monthly reach of 19,826,000 in 2021. History 1986 to 1990 Launched in 1986, the first issue of ''The Independent'' was published on 7 October in broadsheet format.Dennis Griffiths (ed.) ''The Encyclopedia of the British Press, 1422–1992'', London & Basingstoke: Macmillan, 1992, p. 330 It was pro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2015 Shoreham Airshow Crash
On 22 August 2015, a former military aircraft crashed onto a main road during an aerial display at the Shoreham Airshow at Shoreham Airport, England, killing 11 people and injuring 16 others. It was the deadliest air show accident in the United Kingdom since the 1952 Farnborough Airshow crash, which had killed 31 people. The aircraft, a Hawker Hunter T7, failed to complete a loop manoeuvre and crashed, hitting vehicles on the A27 road adjacent to the airport. The pilot, Andy Hill, was critically injured but survived. As a result of the accident, all civilian-registered Hawker Hunter aircraft in the United Kingdom were grounded, and restrictions were put in place on civilian vintage jet aircraft displays over land, limiting them to high-level flypasts and banning aerobatic manoeuvres. The official investigation by the Air Accidents Investigation Branch concluded that the crash resulted from pilot error. In 2018, Hill was charged with eleven counts of manslaughter by gross ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blue Angels
The Blue Angels is a flight demonstration squadron of the United States Navy."History of the Blue Angels" Blue Angels official site. Formed in 1946, the unit is the second oldest formal in the world, after the French formed in 1931. The team, composed of six Navy and one Marine Corps demonstration pilot, fly Boeing F/A-18 Super Hornets. The Blue Angels typically perform aerial displays in at least 60 sh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
