An aerostat is a lighter than air aircraft that gains its lift through the use of a buoyant gas. Aerostats include unpowered balloons and powered airships. A balloon may be free-flying or tethered. The average density of the craft is lower than the density of atmospheric air, because its main component is one or more gasbags, a lightweight skin containing a lifting gas to provide buoyancy, to which other components such as a gondola containing equipment or people are attached. Especially with airships, the gasbags are often protected by an outer envelope.
In aeronautics, a balloon is an unpowered aerostat, which remains aloft or floats due to its buoyancy. A balloon may be free, moving with the wind, or tethered to a fixed point. It is distinct from an airship, which is a powered aerostat that can propel itself through the air in a controlled manner.
This is a list of aviation-related events during the 19th century :
Explorer II was a manned U.S. high-altitude balloon that was launched on November 11, 1935, and reached a record altitude of 22,066 m (72,395 ft). Launched at 8:00 am from the Stratobowl in South Dakota, the helium balloon carried a two-man crew consisting of U. S. Army Air Corps Captains Albert W. Stevens and Orvil A. Anderson inside a sealed, spherical cabin. The crew landed safely near White Lake, South Dakota, at 4:13 pm and both were acclaimed as national heroes. Scientific instruments carried on the gondola returned useful information about the stratosphere. The mission was funded by the membership of the National Geographic Society.
A gas balloon is a balloon that rises and floats in the air because it is filled with a gas lighter than air. When not in flight, it is tethered to prevent it from flying away and is sealed at the bottom to prevent the escape of gas. A gas balloon may also be called a Charlière for its inventor, the Frenchman Jacques Charles. Today, familiar gas balloons include large blimps and small latex party balloons. For nearly 200 years, well into the 20th century, manned balloon flight utilized gas balloons before hot-air balloons became dominant. Without power, heat or fuel, untethered flights of gas balloons depended on the skill of the pilot. Gas balloons have greater lift for a given volume, so they do not need to be so large, and they can stay up for much longer than hot air balloons.
The Battle of Seven Pines, also known as the Battle of Fair Oaks or Fair Oaks Station, took place on May 31 and June 1, 1862, in Henrico County, Virginia, as part of the Peninsula Campaign of the American Civil War. It was the culmination of an offensive up the Virginia Peninsula by Union Maj. Gen. George B. McClellan, in which the Army of the Potomac reached the outskirts of Richmond.
Thaddeus Sobieski Constantine Lowe, also known as Professor T.S.C. Lowe, was an American Civil War aeronaut, scientist and inventor, mostly self-educated in the fields of chemistry, meteorology, and aeronautics, and the father of military aerial reconnaissance in the United States. By the late 1850s he was well known for his advanced theories in the meteorological sciences as well as his balloon building. Among his aspirations were plans for a transatlantic flight.
Henry Tracey Coxwell was an English aeronaut and writer about ballooning active over the British Isles and continental Europe in the mid-to late nineteenth century. His achievements included having established and led two military balloon companies in Cologne, Germany at the outbreak of the Franco-Prussian war in 1870, leading the first aerial trip in England for purposes of photography, piloting a British Association flight from Wolverhampton, England that achieved a record altitude with James Glaisher in 1862, reaching at least 29,000 ft (8,800 m), and perhaps as high as 35,000 to 37,000 ft ], as well as founding The Balloon, or Aerostatic Magazine and collecting his experiences in an autobiography, My Life and Balloon Experiences. He was referred to as the foremost balloonist of the last half of the nineteenth century by the English-language periodical, Illustrated London News, in January 1900.
The Union Army Balloon Corps was a branch of the Union Army during the American Civil War, established by presidential appointee Thaddeus S. C. Lowe. It was organized as a civilian operation, which employed a group of prominent American aeronauts and seven specially built, gas-filled balloons to perform aerial reconnaissance on the Confederate States Army.
Balloons were one of the first mechanisms used in air warfare. Their role was originally mainly for reconnaissance purposes. They provided humans with the first available method of elevating themselves well over the battlefield to obtain the proverbial "birds-eye view." They were an early instrument of definitive intelligence collection, and were also particularly useful in the preparation of accurate battlefield maps, before which time this rudimentary craft had led to many a battlefield failure. Incendiary balloons also have a long history.
An observation balloon is a type of balloon that is employed as an aerial platform for intelligence gathering and artillery spotting. Use of observation balloons began during the French Revolutionary Wars, reaching their zenith during World War I, and they continue in limited use today.
A balloon carrier or balloon tender was a ship equipped with a balloon, usually tied to the ship by a rope or cable, and usually used for observation. During the second half of the 19th century and the early 20th century, these ships were built to have the furthest possible view of the surrounding waters. After several experiments, the type became formalized in the early 1900s, but was soon to be superseded by the development of seaplane carriers and regular aircraft carriers at the beginning of World War I.
John Wise was a pioneer in the field of ballooning. He made over 400 flights during his lifetime and was responsible for several innovations in balloon design. His balloon, The Jupiter carried 123 letters to make the first official airmail delivery run for the US Post Office in 1859.
Fort Corcoran was a wood-and-earthwork fortification constructed by the Union Army in northern Virginia as part of the defenses of Washington, D.C. during the American Civil War. Built in 1861, shortly after the occupation of Arlington, Virginia by Union forces, it protected the southern end of the Aqueduct Bridge and overlooked the Potomac River and Theodore Roosevelt Island, known as Mason's Island.
The history of ballooning, both with hot air and gas, spans many centuries. It includes many firsts, including the first human flight, first flight across the English Channel, first flight in North America, and first aircraft related disaster.
A lifting gas or lighter than air gas is a gas that has a lower density than normal atmospheric gases and rises above them as a result. It is required for aerostats to create buoyancy, particularly in lighter-than-air aircraft, which include free balloons, moored balloons, and airships. Only certain lighter than air gases are suitable as lifting gases. Dry air has a density of about 1.29 g/L at standard conditions for temperature and pressure (STP) and an average molecular mass of 28.97 g/mol, and so lighter than air gases have a density lower than this.
Les Frères Robert were two French brothers. Anne-Jean Robert (1758–1820) and Nicolas-Louis Robert (1760–1820) were the engineers who built the world's first hydrogen balloon for professor Jacques Charles, which flew from central Paris on 27 August 1783. They went on to build the world's first manned hydrogen balloon, and on 1 December 1783 Nicolas-Louis accompanied Jacques Charles on a 2-hour, 5-minute flight. Their barometer and thermometer made it the first balloon flight to provide meteorological measurements of the atmosphere above the Earth's surface.
The French Aerostatic Corps or Company of Aeronauts was the world's first air force, founded in 1794 to use balloons, primarily for reconnaissance.
Balloonomania was a strong public interest or fad in balloons that originated in France in the late 18th century and continued into the 19th century, during the advent of balloon flights. The interest began with the first flights of the Montgolfier brothers in 1783. Soon afterwards Jacques Alexandre César Charles flew another type of balloon and both types of balloon were in use from then on. The fad quickly spread in France and across the channel in England.
Carl Edgar Myers was an American businessman, scientist, inventor, meteorologist, balloonist, and aeronautical engineer. He invented many types of hydrogen balloon airships and related equipment. His business of making passenger airshipballoons and instrument balloons at his "balloon farm" was well known throughout the United States in the late nineteenth and early twentieth centuries. He invented a machine for varnishing fabric that would make it impervious to hydrogen so that the finished product could be made into large envelopes for lighter-than-air balloons.
