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1 Yost, Paul Edward
SUBJECT AREA: Aerospace[br]b. 30 June 1919 Bristow, Iowa, USA[br]American designer of balloons who reintroduced the hot-air balloon.[br]After the early hot-air balloons of the Montgolfier brothers in the 1780s, this branch of ballooning was superseded by hydrogen, coal gas and helium balloons. Following the research by Auguste Piccard into cosmic radiation during the 1930s, a renewed interest in this branch of research arose in the United States from 1947 onwards, using helium-filled balloons. Modern plastics were available by this time, and polythene was used for the envelopes.Paul E.Yost developed an improved form of envelope using nylon fabric laminated with mylar plastic film. This provided a strong impermeable material that was ideal for balloons. Using this material for the envelope, Yost produced the Vulcoon in 1960. He also reintroduced the use of hot air to inflate his balloon and developed an easily controlled gas burner fuelled by propane gas, which was readily available in cylinders for portable cooking stoves. Yost's company, Raven Industries, developed these very basic balloons as a military project. The pilot was suspended in a sling, but they improved the design by fitting wicker or aluminium baskets and turned to a market in the field of sport. After a slow start, hot-air ballooning became popular as a sport. In 1963 Yost made the first crossing of the English Channel in a hot-air balloon, accompanied by Donald Piccard, nephew of the balloonist Auguste Piccard, and Charles Dollfus, the eminent French aviation historian. Yost's attempt to cross the Atlantic in his balloon Silver Fox during 1976 failed and he was rescued from the sea near the Azores. The popularity of hot-air ballooning increased during the 1970s, and evolved into a very original form of advertising with unusual shapes for the envelopes, including a house, a bottle and an elephant.JDS -
2 Montgolfier, Joseph-Michel
SUBJECT AREA: Aerospace[br]b. 26 August 1740 Vidalon-lès-Annonay, Franced. 26 June 1810 Balaruc-les-Bains, France[br]French ballooning pioneer who, with his brother Jacques-Etienne (b. 6 January 1745 Vidalon-lès-Annonay, France; d. 2 August 1799, Serriers, France), built the first balloon to carry passengers on a "free" flight.[br]Joseph-Michel and Jacques-Etienne Montgolfier were papermakers of Annonay, near Lyon. Joseph made the first experiments' after studying smoke rising from a fire and assuming that the smoke contained a gas which was lighter than air: of course, this lighter-than-air gas was just hot air. Using fine silk he made a small balloon with an aperture in its base, then, by burning paper beneath this aperture, he filled the balloon with hot air and it rose to the ceiling. Jacques-Etienne joined his brother in further experiments and they progressed to larger hot-air balloons until, by October 1783, they had constructed one large enough to lift two men on tethered ascents. In the same month Joseph-Michel delivered a paper at the University of Lyon on his experiments for a propulsive system by releasing gas through an opening in the side of a balloon; unfortunately, there was not enough pressurefor an effective jet. Then, on 21 November 1783, the scientist Pilâtre de Rozier and the Marquis d'Arlandes ascended on a "free" flight in a Montgolfier balloon. They departed from the grounds of a château in the Bois de Boulogne in Paris on what was to be the world's first aerial journey, covering 9 km (5/2 miles) in 25 minutes.Ballooning became a popular spectacle with initial rivalry between the hot-air Montgolfières and the hydrogen-filled Charlières of J.A.C. Charles. Interest in hot-air balloons subsided, but was revived in the 1960s by an American, Paul E. Yost. His propane-gas burner to provide hot-air was a great advance on the straw-burning fire-basket of the Montgolfiers.[br]Principal Honours and DistinctionsLégion d'honneur.Further ReadingC.C.Gillispie, 1983, The Montgolfier Brothers and the Invention of Aviation 1783–1784, Princeton, NJ (one of the publications to commemorate the bicentenary of the Montgolfiers).L.T.C.Rolt, 1966, The Aeronauts, London (describes the history of balloons). C.Dollfus, 1961, Balloons, London.JDSBiographical history of technology > Montgolfier, Joseph-Michel
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3 globo aerostático
m.aerostat, balloon.* * *hot air balloon, hydrogen balloon* * *(n.) = hot-air balloonEx. Topics covered include the Bosnia peace talks, hot-air balloons, salt production, and the North American prairie ecosystem.* * *(n.) = hot-air balloonEx: Topics covered include the Bosnia peace talks, hot-air balloons, salt production, and the North American prairie ecosystem.
* * *hot air balloon -
4 Charles, Jacques Alexandre César
SUBJECT AREA: Aerospace[br]b. 12 November 1746 Beaugency, Franced. 7 April 1823 Paris, France[br]French physicist who developed the first hydrogen balloon, in 1783.[br]In 1783, following the early experiments with small hot-air balloons by the Montgolfier brothers, there was a growing interest in the prospect of a balloon flight with people on board. The Paris Académie des Sciences encouraged one of their physicists, Charles, to carry out experiments and produce a balloon. Charles enlisted the assistance of two brothers, Anne-Jean and Marie-Noël Robert, who were practical craftsmen with experience of coating silk fabric with rubber to make it impermeable to gases. Charles decided to use the recently discovered lighter-than-air gas, hydrogen, for his experiments rather than hot air. After making several unmanned balloons, he had a manned balloon ready for testing on 1 December 1783. Despite the fact that a Montgolfier balloon had already flown with two passengers, there was enormous public interest in the flight: one estimate suggested that 400,000 people turned out to watch. Charles and Marie-Noël Robert ascended from the gardens of the Tuileries and landed after two hours, having covered 45 km (28 miles). Technically the "Charlière" was far superior to the "Montgolfière" and was therefore used by most subsequent balloonists until the introduction of the modern hot-air balloon by the American Paul E. Yost in the 1960s. Following Meusnier's proposals for a dirigible (steerable) balloon, put forward during 1783–5, Charles and the Robert brothers built an elongated balloon incorporating Meusnier's ballonnet principle. It had a rudder but the method of propulsion, by opening and closing parasols used as paddles, was totally ineffective.[br]Principal Honours and DistinctionsMember of the Académie des Sciences 1795.Further ReadingL.T.C.Rolt, 1966, The Aeronauts, London. C.Dollfus, 1961, Balloons, trans. C.Mason, London. J.B.F.Fourier, 1825, Notice.JDSBiographical history of technology > Charles, Jacques Alexandre César
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5 globo de aire caliente
(n.) = hot-air balloonEx. Topics covered include the Bosnia peace talks, hot-air balloons, salt production, and the North American prairie ecosystem.* * *(n.) = hot-air balloonEx: Topics covered include the Bosnia peace talks, hot-air balloons, salt production, and the North American prairie ecosystem.
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6 conversaciones de paz
(n.) = peace talksEx. Topics covered include the Bosnia peace talks, hot-air balloons, salt production, and the North American prairie ecosystem.* * *(n.) = peace talksEx: Topics covered include the Bosnia peace talks, hot-air balloons, salt production, and the North American prairie ecosystem.
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7 negociaciones de paz
(n.) = peace negotiations, peace talksEx. In the last decade, however, remarkable progress has been achieved in peace negotiations among Israel, the Palestinians, and adjacent Arab states.Ex. Topics covered include the Bosnia peace talks, hot-air balloons, salt production, and the North American prairie ecosystem.* * *(n.) = peace negotiations, peace talksEx: In the last decade, however, remarkable progress has been achieved in peace negotiations among Israel, the Palestinians, and adjacent Arab states.
Ex: Topics covered include the Bosnia peace talks, hot-air balloons, salt production, and the North American prairie ecosystem. -
8 montgolfière
n. f.1. 'Nympho', nymphomaniac.2. (pl.): 'Bubbies', 'bristols', full and self-supporting breasts. (The montgolfiére, the invention of the Montgolfier brothers, was one of the first hot-air balloons.)3. (pl.): 'Balls', 'bollocks', testicles. (The reference to montgolfières in respect of testicles is, more often than not, made in a jocular vein, implying either an over-sexed brain or advanced V.D.) -
9 Meusnier, Jean Baptiste Marie
SUBJECT AREA: Aerospace[br]b. 1754 Tours, Franced. 1793 Mainz, Germany[br]French designer of the "dirigible balloon" (airship).[br]Just a few days after the first balloon flight by the relatively primitive Montgolfier hot-air balloon, a design for a sophisticated steerable or "dirigible" balloon was proposed by a young French army officer. On 3 December 1783, Lieutenant (later General) Jean Baptiste Marie Meusnier of the Corps of Engineers presented to the Académie des Sciences a paper entitled Mémoire sur l'équilibre des machines aérostatiques. This outlined Meusnier's ideas and so impressed the learned members of the Academy that they commissioned him to make a more complete study. This was published in 1784 and contained sixteen water-colour drawings of the proposed airship, which are preserved by the Musée de l'Air in Paris.Meusnier's "machine aérostatique" was ellipsoidal in shape, in contrast to those of his unsuccessful contemporaries who tried to make spherical balloons steerable, often using oars for propulsion. Meusnier's proposed airship was 79.2 m (260 ft) long with the crew in a slim boat slung below the envelope (in case of a landing on water); it was steered by a large sail-like rudder at the rear end. Between the envelope and the boat were three propellers, which were to be manually driven as there was no suitable engine available; this was the first design for a propeller-driven aircraft. The most important innovation was a ballonnet, a balloon within the main envelope that was pressurized with air supplied by bellows in the boat. Varying the amount of air in the ballonnet would compensate for changes in the volume of hydrogen gas in the main envelope when the airship changed altitude. The ballonnet would also help to maintain the external shape of the main envelope.General Meusnier was killed in action in 1793 and it was almost one hundred years from the date of his publication that his idea of ballonnets was put into practice, by Dupuy de Lome in 1872, and later by Renard and Krebs.[br]Bibliography1784, Mémoire sur l'équilibre des machines aérostatiques, Paris; repub. Paris: Musée de l'Air.Further ReadingL.T.C.Rolt, 1966, The Aeronauts, London (paperback 1985). Basil Clarke, 1961, The History of Airships, London.JDSBiographical history of technology > Meusnier, Jean Baptiste Marie
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