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Hypobaric
A hypobaric chamber, or altitude chamber, is a chamber used during aerospace or high terrestrial altitude research or training to simulate the effects of high altitude on the human body, especially hypoxia (low oxygen) and hypobaria (low ambient air pressure). Some chambers also control for temperature and relative humidity. Procedure One or more subjects (usually, pilots or crew members, though anyone interested in the effects of high altitude can usually arrange a visit) are placed in the chamber. Before "ascending" to the desired altitude, subjects breathe oxygen from oxygen masks to purge nitrogen from their bloodstream so decompression sickness (DCS) does not occur. With masks in place, the atmospheric pressure inside the chamber is then reduced to simulate altitudes of up to tens of thousands of feet. The subjects then remove their oxygen masks and experience the symptoms of hypoxia. An inside safety observer, breathing oxygen by mask, should always be present to pla ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
RAF Centre Of Aviation Medicine
The RAF Centre of Aviation Medicine (RAF CAM) is a medical organisation run by the Royal Air Force and based at RAF Henlow in Bedfordshire. It is the main organisation conducting aviation medicine research in the UK. History Formation The centre was formed on 1 December 1998 as a result of the merger of the School of Aviation Medicine based at Farnborough in Hampshire and the Aviation Medicine Training Centre based at RAF North Luffenham in Rutland. The centre's predecessor was the RAF Institute of Aviation Medicine (RAF IAM), which closed in 1994. Expansion The RAF Medical Board and RAF Institute of Health moved from RAF Halton in Buckinghamshire to the centre on 1 June 2000, becoming the Occupation and Environmental Medicine Wing. It was formerly part of RAF Personnel and Training Command, becoming part of RAF Air Command in 2007. In April 2022, the centre retired its two BAE Systems Hawk T1 which were based at MOD Boscombe Down in Wiltshire. The aircraft were used fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
High Altitude
Altitude or height (also sometimes known as depth) is a distance measurement, usually in the vertical or "up" direction, between a reference datum and a point or object. The exact definition and reference datum varies according to the context (e.g., aviation, geometry, geographical survey, sport, or atmospheric pressure). Although the term ''altitude'' is commonly used to mean the height above sea level of a location, in geography the term elevation is often preferred for this usage. Vertical distance measurements in the "down" direction are commonly referred to as depth. In aviation In aviation, the term altitude can have several meanings, and is always qualified by explicitly adding a modifier (e.g. "true altitude"), or implicitly through the context of the communication. Parties exchanging altitude information must be clear which definition is being used. Aviation altitude is measured using either mean sea level (MSL) or local ground level (above ground level, o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Time Of Useful Consciousness
Time of useful consciousness (TUC), also effective performance time (EPT), is defined as the amount of time an individual is able to function effectively (e.g. perform flying duties) in an environment of inadequate oxygen supply. It is the period of time from the interruption of the oxygen supply or exposure to an oxygen-poor environment to the time when useful function is lost, and the individual is no longer capable of taking proper corrective and protective action. It is not the time to total unconsciousness. At the higher altitudes, the TUC becomes very short; considering this danger, the emphasis is on prevention rather than cure. For orbital altitudes and above, that is, direct exposure to space, 6–9 seconds of consciousness is expected. Medical analysis and variations There are many individual variations of hypoxia, even within the same person. Generally, old age tends to reduce the efficiency of the pulmonary system, and can cause the onset of hypoxia symptoms sooner ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Altitude
Altitude or height (also sometimes known as depth) is a distance measurement, usually in the vertical or "up" direction, between a reference datum and a point or object. The exact definition and reference datum varies according to the context (e.g., aviation, geometry, geographical survey, sport, or atmospheric pressure). Although the term ''altitude'' is commonly used to mean the height above sea level of a location, in geography the term elevation is often preferred for this usage. Vertical distance measurements in the "down" direction are commonly referred to as depth. In aviation In aviation, the term altitude can have several meanings, and is always qualified by explicitly adding a modifier (e.g. "true altitude"), or implicitly through the context of the communication. Parties exchanging altitude information must be clear which definition is being used. Aviation altitude is measured using either mean sea level (MSL) or local ground level (above ground level, or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cambra Hipobàrica
In British legend, Cambra was the daughter of Belinus the Great, a legendary king of the Britons, and married to Antenor, the second King of the Cimmerians The Cimmerians ( Akkadian: , romanized: ; Hebrew: , romanized: ; Ancient Greek: , romanized: ; Latin: ) were an ancient Eastern Iranian equestrian nomadic people originating in the Caspian steppe, part of whom subsequently migrated into Wes .... The Cimmerians changed the name of their tribe to Sicambri in honor of Cambra. Cambra's son by Antenor, Priamus the Younger, succeeded his father when he was twenty-six. According to John Tritemicus, Cambra was so beautiful and wise that the Frankish monarchy obeyed her as if she was an Oracle, and she converted the people to civility from barbarianism. The Saxons, who apparently identified Cambra with the same status as that of a King or priest, developed the proverb ''Sy Camber'', used to refer to any man who spoke as wisely as Cambra. According to John Lewis's history of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Army Research Institute Of Environmental Medicine
The U.S. Army Research Institute of Environmental Medicine (USARIEM) is the U.S Army’s main institution and facility for military environmental medicine and exercise physiology research. It is located at Natick, Massachusetts, within the U.S. Army Soldier Systems Center (SSC) installation, but is a subordinate lab of the U.S. Army Medical Research and Materiel Command (USAMRMC), headquartered at Fort Detrick, Maryland, USA. Mission USARIEM’s ''Mission Statement'' mandates that the Institute: The Institute has four divisions, each relating to military human performance as it relates to the environment — Biophysical and Biomedical Modeling, Military Nutrition, Military Performance, and Thermal and Mountain Medicine. Research in the divisions focuses on three elements: the ''servicemember'' (acclimation; body size; gender; race; age; health; hydration; nutrition; fitness; and sleep status), the ''environment'' (temperature; wind; humidity; and altitude), and the ''mi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pilot Certification In The United States
Pilot certification in the United States is typically required for an individual to act as a pilot-in-command of an aircraft. It is regulated by the Federal Aviation Administration (FAA), a branch of the U.S. Department of Transportation (USDOT). A pilot may be certified under 14 Code of Federal Regulations (CFR) Part 61 or 14 CFR Part 141 (if a student at an approved part 141 school). Pilots may also be certified under 14 CFR Part 107 for commercial drone operations. An FAA-issued ''pilot certificate'' is evidence that an individual is duly authorized to exercise piloting privileges. The pilot certificate is one of several kinds of ''airman certificates'' issued by the FAA. General structure of certification A pilot is certificated to fly aircraft at one or more named ''privilege levels'' and, at each privilege level, rated to fly aircraft of specific ''categories''. Privilege levels of pilot certificates are, in order of increasing privilege: *Student Pilot: an individual ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Valsalva Maneuver
The Valsalva maneuver is performed by a forceful attempt of exhalation against a closed airway, usually done by closing one's mouth and pinching one's nose shut while expelling air out as if blowing up a balloon. Variations of the maneuver can be used either in medical examination as a test of cardiac function and autonomic nervous control of the heart, or to clear the ears and sinuses (that is, to equalize pressure between them) when ambient pressure changes, as in scuba diving, hyperbaric oxygen therapy, or air travel. A modified version is done by expiring against a closed glottis. This will elicit the cardiovascular responses described below but will not force air into the Eustachian tubes. History The technique is named after Antonio Maria Valsalva, a 17th-century physician and anatomist from Bologna whose principal scientific interest was the human ear. He described the Eustachian tube and the maneuver to test its patency (openness). He also described the use of th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Boyle's Law
Boyle's law, also referred to as the Boyle–Mariotte law, or Mariotte's law (especially in France), is an experimental gas law that describes the relationship between pressure and volume of a confined gas. Boyle's law has been stated as: The absolute pressure exerted by a given mass of an ideal gas is inversely proportional to the volume it occupies if the temperature and amount of gas remain unchanged within a closed system.Levine, Ira. N. (1978), p. 12 gives the original definition. Mathematically, Boyle's law can be stated as: or where is the pressure of the gas, is the volume of the gas, and is a constant. Boyle's Law states that when the temperature of a given mass of confined gas is constant, the product of its pressure and volume is also constant. When comparing the same substance under two different sets of conditions, the law can be expressed as: :P_1 V_1 = P_2 V_2. showing that as volume increases, the pressure of a gas decreases proportionally, and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of North Dakota
The University of North Dakota (also known as UND or North Dakota) is a public research university in Grand Forks, North Dakota. It was established by the Dakota Territorial Assembly in 1883, six years before the establishment of the state of North Dakota. The university has the only schools olawanmedicinein the state of North Dakota. The John D. Odegard School of Aerospace Sciences was the first in the country to offer a degree iunmanned aircraft systems operation Several national research institutions are on the university's campus including the Energy and Environmental Research Center, the School of Medicine and Health Sciences, and the USDA Human Nutrition Research Center. It is classified among "R2: Doctoral Universities – High research activity". The National Science Foundation ranks UND #151 in the nation. History Founding UND was founded in 1883, six years before North Dakota became a state. UND was founded with a liberal arts foundation and expanded to include sc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Natick, Massachusetts
Natick ( ) is a town in Middlesex County, Massachusetts, United States. It is near the center of the MetroWest region of Massachusetts, with a population of 37,006 at the 2020 census. west of Boston, Natick is part of the Greater Boston area. Massachusetts's center of population was in Natick at the censuses of 2000-2020, most recently in the vicinity of Hunters Lane. Name The name ''Natick'' comes from the language of the Massachusett Native American tribe and is commonly thought to mean "Place of Hills." A more accurate translation may be "place of ursearching," after John Eliot's successful search for a location for his Praying Indian settlement. History Natick was settled in 1651 by John Eliot, a Puritan missionary born in Widford, England, who received a commission and funds from England's Long Parliament to settle the Massachusett Indians called Praying Indians on both sides of the Charles River, on land deeded from the settlement at Dedham. Natick was the first of E ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sheppard Air Force Base
Sheppard Air Force Base is a United States Air Force (USAF) base located north of the central business district of Wichita Falls, in Wichita County, Texas, United States. It is the largest training base and most diversified in Air Education and Training Command. The base is named in honor of Texas Senator John Morris Sheppard, a supporter of military preparations before World War II. The host unit at Sheppard is the 82d Training Wing (82 TRW), which provides specialized technical training and field training for officers, airmen and civilians of all branches of the U.S. military, other Department of Defense agencies and foreign nationals. The 80th Flying Training Wing (80 FTW), also at Sheppard, conducts the Euro-NATO Joint Jet Pilot Training (ENJJPT) program, a multi-nationally manned and managed flying training program chartered to produce combat pilots for both USAF and NATO. This internationally manned and managed flying training program is the only one in the world. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
