The United States of America known as the United States or America, is a country composed of 50 states, a federal district, five major self-governing territories, various possessions. At 3.8 million square miles, the United States is the world's third or fourth largest country by total area and is smaller than the entire continent of Europe's 3.9 million square miles. With a population of over 327 million people, the U. S. is the third most populous country. The capital is Washington, D. C. and the largest city by population is New York City. Forty-eight states and the capital's federal district are contiguous in North America between Canada and Mexico; the State of Alaska is in the northwest corner of North America, bordered by Canada to the east and across the Bering Strait from Russia to the west. The State of Hawaii is an archipelago in the mid-Pacific Ocean; the U. S. territories are scattered about the Pacific Ocean and the Caribbean Sea, stretching across nine official time zones. The diverse geography and wildlife of the United States make it one of the world's 17 megadiverse countries.
Paleo-Indians migrated from Siberia to the North American mainland at least 12,000 years ago. European colonization began in the 16th century; the United States emerged from the thirteen British colonies established along the East Coast. Numerous disputes between Great Britain and the colonies following the French and Indian War led to the American Revolution, which began in 1775, the subsequent Declaration of Independence in 1776; the war ended in 1783 with the United States becoming the first country to gain independence from a European power. The current constitution was adopted in 1788, with the first ten amendments, collectively named the Bill of Rights, being ratified in 1791 to guarantee many fundamental civil liberties; the United States embarked on a vigorous expansion across North America throughout the 19th century, acquiring new territories, displacing Native American tribes, admitting new states until it spanned the continent by 1848. During the second half of the 19th century, the Civil War led to the abolition of slavery.
By the end of the century, the United States had extended into the Pacific Ocean, its economy, driven in large part by the Industrial Revolution, began to soar. The Spanish–American War and World War I confirmed the country's status as a global military power; the United States emerged from World War II as a global superpower, the first country to develop nuclear weapons, the only country to use them in warfare, a permanent member of the United Nations Security Council. Sweeping civil rights legislation, notably the Civil Rights Act of 1964, the Voting Rights Act of 1965 and the Fair Housing Act of 1968, outlawed discrimination based on race or color. During the Cold War, the United States and the Soviet Union competed in the Space Race, culminating with the 1969 U. S. Moon landing; the end of the Cold War and the collapse of the Soviet Union in 1991 left the United States as the world's sole superpower. The United States is the world's oldest surviving federation, it is a representative democracy.
The United States is a founding member of the United Nations, World Bank, International Monetary Fund, Organization of American States, other international organizations. The United States is a developed country, with the world's largest economy by nominal GDP and second-largest economy by PPP, accounting for a quarter of global GDP; the U. S. economy is post-industrial, characterized by the dominance of services and knowledge-based activities, although the manufacturing sector remains the second-largest in the world. The United States is the world's largest importer and the second largest exporter of goods, by value. Although its population is only 4.3% of the world total, the U. S. holds 31% of the total wealth in the world, the largest share of global wealth concentrated in a single country. Despite wide income and wealth disparities, the United States continues to rank high in measures of socioeconomic performance, including average wage, human development, per capita GDP, worker productivity.
The United States is the foremost military power in the world, making up a third of global military spending, is a leading political and scientific force internationally. In 1507, the German cartographer Martin Waldseemüller produced a world map on which he named the lands of the Western Hemisphere America in honor of the Italian explorer and cartographer Amerigo Vespucci; the first documentary evidence of the phrase "United States of America" is from a letter dated January 2, 1776, written by Stephen Moylan, Esq. to George Washington's aide-de-camp and Muster-Master General of the Continental Army, Lt. Col. Joseph Reed. Moylan expressed his wish to go "with full and ample powers from the United States of America to Spain" to seek assistance in the revolutionary war effort; the first known publication of the phrase "United States of America" was in an anonymous essay in The Virginia Gazette newspaper in Williamsburg, Virginia, on April 6, 1776. The second draft of the Articles of Confederation, prepared by John Dickinson and completed by June 17, 1776, at the latest, declared "The name of this Confederation shall be the'United States of America'".
The final version of the Articles sent to the states for ratification in late 1777 contains the sentence "The Stile of this Confederacy shall be'The United States of America'". In June 1776, Thomas Jefferson wrote the phrase "UNITED STATES OF AMERICA" in all capitalized letters in the headline of his "original Rough draught" of the Declaration of Independence; this draft of the document did not surface unti
No. 657 Squadron RAF
No. 657 Squadron RAF was a unit of the Royal Air Force in North Africa and the Netherlands during the Second World War and afterwards in Germany. Numbers 651 to 663 Squadrons of the RAF were Air Observation Post units working with Army units in artillery spotting and liaison. A further three of these squadrons, 664-666, were manned with Canadian personnel, their duties and squadron numbers were transferred to the Army with the formation of the Army Air Corps on 1 September 1957. No. 657 Squadron was formed at RAF Ouston on 31 January 1943. It went into action in North Africa, it served in Italy, the Netherlands and Germany. In November 1945, the squadron returned to the UK and continued to support army units in the South of England until disbanded by being renumbered No. 651 Squadron RAF on 1 November 1955. The original squadron is represented today by 657 Squadron AAC of the Joint Special Forces Aviation Wing. List of Royal Air Force aircraft squadrons History of No.'s 651–670 Squadrons at RAF Web 657 Squadron Army Air Corps at Elite UK Forces
The Vought-Sikorsky VS-300 is an American single-engine helicopter designed by Igor Sikorsky. It had a single three-blade rotor powered by a 75 horsepower engine; the first "free" flight of the VS-300 was on 13 May 1940. The VS-300 was the first successful single lifting rotor helicopter in the United States and the first successful helicopter to use a single vertical-plane tail rotor configuration for antitorque. With floats attached, it became the first practical amphibious helicopter. Igor Sikorsky's quest for a practical helicopter began in 1938, when as the Engineering Manager of the Vought-Sikorsky Division of United Aircraft Corporation, he was able to convince the directors of United Aircraft that his years of study and research into rotary-wing flight problems would lead to a breakthrough, his first experimental machine, the VS-300, was test flown by Sikorsky on 14 September 1939, tethered by cables. In developing the concept of rotary-wing flight, Sikorsky was the first to introduce a single engine to power both the main and tail rotor systems.
The only previous successful attempt at a single-lift rotor helicopter, the Yuriev-Cheremukhin TsAGI-1EA in 1931 in the Soviet Union, used a pair of uprated, Russian-built Gnome Monosoupape rotary engines of 120 hp each for its power. For flights of his VS-300, Sikorsky added a vertical airfoil surface to the end of the tail to assist anti-torque but this was removed when it proved to be ineffective; the cyclic control was found to be difficult to perfect, led to Sikorsky locking the cyclic and adding two smaller vertical-axis lifting rotors to either side aft of the tailboom. By varying pitch of these rotors fore and aft control was provided. Roll control was provided by differential pitching of the blades. In this configuration, it was found that the VS-300 could not fly forward and Sikorsky joked about turning the pilot's seat around. Sikorsky fitted utility floats to the VS-300 and performed a water landing and takeoff on 17 April 1941, making it the first practical amphibious helicopter.
On 6 May 1941, the VS-300 beat the world endurance record held by the Focke-Wulf Fw 61, by staying aloft for 1 hour 32 minutes and 26.1 seconds. The final variant of the VS-300 was powered by a 150 hp Franklin engine; the VS-300 was one of the first helicopters capable of carrying cargo. The VS-300 was modified over a two-year period, including removal of the two vertical tail rotors, until 1941, when a new cyclic control system gave it much improved flight behavior. In 1943, the VS-300 was retired to the Henry Ford Museum in Michigan, it has been on display there since, except for a trip back to the Sikorsky Aircraft plant for restoration in 1985. Data from General characteristics Crew: one Length: 28 ft 0 in Height: 10 ft 0 in Gross weight: 1,150 lb Powerplant: 1 × Franklin 4AC-199-E, 90 hp at 2,500 rpm Main rotor diameter: 30 ft 0 in Performance Maximum speed: 50 mph Range: 75 mi Endurance: 1 hour 30 minutes Related development Sikorsky R-4Aircraft of comparable role and era Bell 30 "Wingless Helicopter Flies Straight Up", Popular Mechanics, September 1940 article showing Sikorsky flying his first helicopter Heroes of the Sky: VS300 exhibit at the Henry Ford Museum
A helicopter is a type of rotorcraft in which lift and thrust are supplied by rotors. This allows the helicopter to take off and land vertically, to hover, to fly forward and laterally; these attributes allow helicopters to be used in congested or isolated areas where fixed-wing aircraft and many forms of VTOL aircraft cannot perform. The English word helicopter is adapted from the French word hélicoptère, coined by Gustave Ponton d'Amécourt in 1861, which originates from the Greek helix "helix, whirl, convolution" and pteron "wing". English language nicknames for helicopter include "chopper", "copter", "helo", "heli", "whirlybird". Helicopters were developed and built during the first half-century of flight, with the Focke-Wulf Fw 61 being the first operational helicopter in 1936; some helicopters reached limited production, but it was not until 1942 that a helicopter designed by Igor Sikorsky reached full-scale production, with 131 aircraft built. Though most earlier designs used more than one main rotor, it is the single main rotor with anti-torque tail rotor configuration that has become the most common helicopter configuration.
Tandem rotor helicopters are in widespread use due to their greater payload capacity. Coaxial helicopters, tiltrotor aircraft, compound helicopters are all flying today. Quadcopter helicopters pioneered as early as 1907 in France, other types of multicopter have been developed for specialized applications such as unmanned drones; the earliest references for vertical flight came from China. Since around 400 BC, Chinese children have played with bamboo flying toys; this bamboo-copter is spun by rolling a stick attached to a rotor. The spinning creates lift, the toy flies when released; the 4th-century AD Daoist book Baopuzi by Ge Hong describes some of the ideas inherent to rotary wing aircraft. Designs similar to the Chinese helicopter toy appeared in some Renaissance paintings and other works. In the 18th and early 19th centuries Western scientists developed flying machines based on the Chinese toy, it was not until the early 1480s, when Italian polymath Leonardo da Vinci created a design for a machine that could be described as an "aerial screw", that any recorded advancement was made towards vertical flight.
His notes suggested that he built small flying models, but there were no indications for any provision to stop the rotor from making the craft rotate. As scientific knowledge increased and became more accepted, people continued to pursue the idea of vertical flight. In July 1754, Russian Mikhail Lomonosov had developed a small coaxial modeled after the Chinese top but powered by a wound-up spring device and demonstrated it to the Russian Academy of Sciences, it was powered by a spring, was suggested as a method to lift meteorological instruments. In 1783, Christian de Launoy, his mechanic, used a coaxial version of the Chinese top in a model consisting of contrarotating turkey flight feathers as rotor blades, in 1784, demonstrated it to the French Academy of Sciences. Sir George Cayley, influenced by a childhood fascination with the Chinese flying top, developed a model of feathers, similar to that of Launoy and Bienvenu, but powered by rubber bands. By the end of the century, he had progressed to using sheets of tin for rotor blades and springs for power.
His writings on his experiments and models would become influential on future aviation pioneers. Alphonse Pénaud would develop coaxial rotor model helicopter toys in 1870 powered by rubber bands. One of these toys, given as a gift by their father, would inspire the Wright brothers to pursue the dream of flight. In 1861, the word "helicopter" was coined by Gustave de Ponton d'Amécourt, a French inventor who demonstrated a small steam-powered model. While celebrated as an innovative use of a new metal, the model never lifted off the ground. D'Amecourt's linguistic contribution would survive to describe the vertical flight he had envisioned. Steam power was popular with other inventors as well. In 1878 the Italian Enrico Forlanini's unmanned vehicle powered by a steam engine, rose to a height of 12 meters, where it hovered for some 20 seconds after a vertical take-off. Emmanuel Dieuaide's steam-powered design featured counter-rotating rotors powered through a hose from a boiler on the ground. In 1887 Parisian inventor, Gustave built and flew a tethered electric model helicopter.
In July 1901, the maiden flight of Hermann Ganswindt's helicopter took place in Berlin-Schöneberg. A movie covering the event was taken by Max Skladanowsky. In 1885, Thomas Edison was given US$1,000 by James Gordon Bennett, Jr. to conduct experiments towards developing flight. Edison built a helicopter and used the paper for a stock ticker to create guncotton, with which he attempted to power an internal combustion engine; the helicopter was damaged by explosions and one of his workers was badly burned. Edison reported that it would take a motor with a ratio of three to four pounds per horsepower produced to be successful, based on his experiments. Ján Bahýľ, a Slovak inventor, adapted the internal combustion engine to power his helicopter model that reached a height of 0.5 meters in 1901. On 5 May 1905, his helicopter flew for over 1,500 meters. In 1908, Edison patented his own design for a helicopter powered by a gasoline engine with box kites attached to a mast by cables for a rotor, but it never flew.
In 1906, two French brothers and Louis Breguet, began experimenting with airfoils for helicopters. In
Medical evacuation shortened to medevac or medivac, is the timely and efficient movement and en route care provided by medical personnel to wounded being evacuated from a battlefield, to injured patients being evacuated from the scene of an accident to receiving medical facilities, or to patients at a rural hospital requiring urgent care at a better-equipped facility using medically equipped ground vehicles or aircraft. Examples include civilian EMS vehicles, civilian aeromedical helicopter services, Army air ambulances; this term covers the transfer of patients from the battlefield to a treatment facility or from one treatment facility to another by medical personnel, such as from a local hospital to a trauma center. The first medical transport by air was recorded in Serbia in the autumn of 1915 during First World War. One of the ill soldiers in that first medical transport was Milan Rastislav Štefánik, a Slovak pilot-volunteer, flown to safety by French aviator Louis Paulhan; the United States Army used this lifesaving technique in Burma toward the end of World War II with Sikorsky R-4B helicopters.
The first helicopter rescue was by 2nd Lt Carter Harman, in Japanese-held Burma, who had to make several hops to get his Sikorsky YR-4B to the 1st Air Commando Group's secret airfield in enemy territory and made four trips from there between April 25 and 26 to recover the American pilot and four injured British soldiers, one at a time. The first medivac under fire was done in Manila in 1945 when five pilots evacuated 75-80 soldiers one or two at a time. Aeromedical evacuation Air ambulance Casualty evacuationGlobal Rescue, provider of medical evacuation services."Medevac bill" Medivac Shock Trauma Air Rescue Society Association of Air Medical Services Landing in Hell: Army Medevac Today - slideshow by Life magazine
771 Naval Air Squadron
771 Naval Air Squadron of the Fleet Air Arm was formed on 24 May 1939 at Lee-on-Solent as a Fleet Requirements Unit with 14 Fairey Swordfish TSR biplanes. The Squadron carried out various exercises with ships and provided towed targets for naval air gunners and was decommissioned on 22 March 2016; the Squadron had a northern element, a southern element.'X' Flight broke away on 28 September 1939 to become 772 Naval Air Squadron. The reshaped 771 NAS was based at RNAS Hatston flying a variety of fixed-wing aircraft, ranging from Supermarine Walruses to Hawker Hurricanes, from airfields across the UK and abroad. A notable point in 771s wartime history was that they started the chain that led to the sinking of the German battleship Bismarck; the Commanding Officer of HMS Sparrowhawk, Capt Henry Lockhart St John Fancourt, RN, had been ordered to identify and sink the Bismarck at the earliest opportunity. The two squadrons of Albacore TSRs he had did not have sufficient range to attack the battleship whilst in harbour.
He was relying on the Royal Air Force to carry out flights over Bergen, inform the Royal Navy when the Battleship had left port. On 22 May 1941 RAF Coastal Command deemed the weather unsuitable for flight. Temporary Lieutenant Noel Ernest Goddard, RNVR, at the time the Senior Pilot of 771 NAS, volunteered to pilot the sortie, with his crew of Acting Leading Airman John Walker Armstrong as TAG-WO, Leading Airman J. D. Milne as TAG-AG; the experienced observer Commander Geoffry Alexander Rotherham, at the time the Air Stations XO, stepped up to act as Mission Commander. Goddard flew on instruments at low level over the sea. Having identified that the ships had sailed they attempted to radio their discovery back to RAF Coastal Command. However, they did not receive any reply. Rotherham decided to contact the Air Station directly on the Towed Target frequency and fly directly to HMS Sparrowhawk's forward airfield, where the Albacores were ready to intercept. Acting on Rotherhams's radio message, the Home Fleet were set to sea and engage the Bismarck and her escorts intercepting her at the Battle of the Denmark Straits.
On 16 September 1941 The London Gazette reported the awarding of the following honours: Rotherham received the DSO, Goddard the DSC, Armstrong the DSM. Goddard went on to Command 771 NAS as a Temporary Lieutenant Commander on 15 October 1941. On 1 July 1942 771 NAS moved to RNAS Twatt to fly more modern aircraft in a similar role. In February 1945, 771 received the Sikorsky Hoverfly, making it the first naval air squadron to operate helicopters, which it used until May 1947. After victory in Europe the Fleet moved from Scapa Flow to the anchorage at Portland. 771 NAS followed south to RNAS Zeals and to RNAS Lee-on-Solent and RNAS Ford. Here the Squadron flew Miles Martinets, Douglas Bostons, Vought Corsairs, Grumman Wildcats, Airspeed Oxfords, Grumman Hellcats, Supermarine Seafires, North American Harvards, de Havilland Mosquitoes, Hawker Sea Furys, Short Sturgeons, as well as the Hoverfly; the Hoverflies were transferred to 705 Naval Air Squadron. During the Defence reductions following the Second World War it was decided that 771 would be disbanded in August 1955 when it combined with 703 Naval Air Squadron to form 700 Naval Air Squadron.
771 NAS reformed in 1961 and assumed the helicopter trials and training roles from 700 NAS with the Westland Whirlwind, Westland Dragonfly, the Westland Wasp prototype at RNAS Portland. During this time 771 was able to develop many Search And Rescue techniques. Soon after standing up again, the Squadron gained two Westland Whirlwind HAR.3s and assumed the RNAS Portland SAR commitment. The Squadron was disbanded on 1 December 1964, on being absorbed into 829 Naval Air Squadron. On 23 June 1967, the squadron reformed with the new primary task of anti-submarine warfare Fleet Requirements Unit, in addition to the Portland SAR duty. Nine Whirlwind HAS.7. The Westland Wessex was introduced in 1969 with the Mk 1; this marked the beginning of a long association of the aircraft with the squadron. By 1970, the ASW role had been passed on to 737 Naval Air Squadron, making SAR 771's primary role, a role that has remained to the present day; the Squadron moved to RNAS Culdrose in September 1974. Six of its Wessex aircraft were left at RNAS Portland.
The Wessex HAS.1 was replaced by the twin turbine-powered Wessex HU.5 in 1979, when it was involved with the 1979 Fastnet race rescues. During the Falklands Conflict all of 771 aircraft were taken for troop transport roles, some went to 722 Naval Air Squadron, but the majority reformed 847 Naval Air Squadron and 848 Naval Air Squadron along with some of 771 NASs aircrew; the remaining crew went either to their old aircraft type, or to new roles in the Lynx or Wasp fleets. Two Wessex Mk.5 from Wroughton were used in August 1982 to form the backbone of 771 NAS as it took the SAR commitment back from the RAF. In January 1983 the Squadron once again operated mixed fleets of rotary and fixed wing aircraft as it absorbed the Station Flight, taking ownership of two Chipmunks and 2 Sea Devons, it operated these until the end of 1989. In 1985 the Squadron absorbed 707 Naval Air Squadron's Wessex helicopters when 771 NAS took over Commando Helico
Wright-Patterson Air Force Base
Wright-Patterson Air Force Base is a United States Air Force base and census-designated place just east of Dayton, Ohio, in Greene and Montgomery counties. It includes both Wright and Patterson Fields, which were Wilbur Wright Field and Fairfield Aviation General Supply Depot. Patterson Field is 10 miles northeast of Dayton; the host unit at Wright-Patterson AFB is the 88th Air Base Wing, assigned to the Air Force Life Cycle Management Center and Air Force Materiel Command. The 88 ABW operates the airfield, maintains all infrastructure and provides security, medical, personnel, finance, air traffic control, weather forecasting, public affairs and chaplain services for more than 60 associate units; the base's origins begin with the establishment of Wilbur Wright Field on 22 May and McCook Field in November 1917, both established by the Army Air Service as World War I installations. McCook was used for aviation experiments. Wright was used as a flying field. McCook's functions were transferred to Wright Field when it was closed in October 1927.
Wright-Patterson AFB was established in 1948 as a merger of Wright Fields. In 1995, negotiations to end the Bosnian War were held at the base, resulting in the Dayton Agreement that ended the war; the 88th Air Base Wing is commanded by Col. John M. Devillier Its Command Chief Master Sergeant is Chief Master Sergeant John M. Mazza; the base had a total of 27,406 military and contract employees in 2010. The Greene County portion of the base is a census-designated place, with a resident population of 1,821 at the 2010 census. Wright-Patterson AFB is "one of the largest, most diverse, organizationally complex bases in the Air Force" with a long history of flight tests spanning from the Wright Brothers into the Space Age, it is the headquarters of the Air Force Materiel Command, one of the major commands of the Air Force. "Wright-Patt" is the location of a major USAF Medical Center, the Air Force Institute of Technology, the National Museum of the United States Air Force known as the U. S. Air Force Museum.
It is the home base of the 445th Airlift Wing of the Air Force Reserve Command, an Air Mobility Command-gained unit which flies the C-17 Globemaster heavy airlifter. Wright-Patterson is the headquarters of the Air Force Life Cycle Management Center and the Air Force Research Laboratory. Wright-Patterson is the host of the annual United States Air Force Marathon which occurs the weekend closest to the Air Force's anniversary. 88th Air Base WingThe 88 ABW consists of more than 5,000 officers, enlisted Air Force and contractor employees responsible for three primary mission areas: operating the installation. The Wing reports to the Aeronautical Systems Center, a major development and acquisition product center of Air Force Materiel Command, it consists of the following organizations: 88th Civil Engineer Squadron 88th Communications Group 88th Medical Group – Wright-Patterson Medical Center 88th Mission Support Group 88th Comptroller Squadron 88th Security Forces Squadron 88th Air Base Wing Staff AgenciesTenant unitsAir Force Materiel Command Air Force Life Cycle Management Center 77th Aeronautical Systems Wing 303d Aeronautical Systems Wing 312th Aeronautical Systems Wing 326th Aeronautical Systems Wing 478th Aeronautical Systems Wing 516th Aeronautical Systems Wing Air Force Security Assistance Center Air Force Research Laboratory known as Wright Labs Air Force Institute of Technology National Air and Space Intelligence Center National Museum of the U.
S. Air Force 445th Airlift Wing 554th Electronic Systems Group Prehistoric Indian mounds of the Adena culture at Wright-Patterson are along P Street and, at the Wright Brothers Memorial, a hilltop mound group. Aircraft operations on land now part of Wright-Patterson Air Force Base began in 1904–1905 when Wilbur and Orville Wright used an 84-acre plot of Huffman Prairie for experimental test flights with the Wright Flyer III, their flight exhibition company and the Wright Company School of Aviation returned 1910–1916 to use the flying field. World War I transfers of land that became WPAFB include 2,075-acre along the Mad River leased to the Army by the Miami Conservancy District, the adjacent 40 acres purchased by the Army from the District for the Fairfield Aviation General Supply Depot, a 254-acre complex for McCook Field just north of downtown Dayton between Keowee Street and the Great Miami River. In 1918, Wilbur Wright Field agreed to let McCook Field use hangar and shop space as well as its enlisted mechanics to assemble and maintain airplanes and engines.
After World War I, 347 German aircraft were brought to the United States—some were incorporated into the Army Aeronautical Museum. The training school at Wilbur Wright Field was discontinued. Wilbur Wright Field and the depot merged; the Patterson family formed the Dayton Air Service Committee, Inc which held a campaign that raised $425,000 in two days and purchased 4,520.47 acres northeast of Dayton, including Wilbur Wright Field and the Huffman Prairie Flying Field. In 1924, the Comm