Paul Haenlein (17 October 1835 in Cologne – 27 January 1905 in Mainz) was a German engineer and flight pioneer. He flew in a semi-rigid-frame dirigible. His family belonged to the Citoyens notables, those notabilities who led the economy, administration and culture of Mainz.
Development of dirigible with internal combustion engine
Airship of Haenlein
Haenlein received an education as a mechanical engineer and pattern maker. He studied at the Technische Hochschule in Karlsruhe. Subsequently he worked as graduated civil engineer for different factories. He was the first to create a dirigible airship which was powered by an internal combustion engine. This Lenoir-type motor obtained its fuel from the gas in the balloon. It had four horizontal cylinders, which delivered about 6 horsepower (4.5 kW) with a consumption of approximately 250 cubic feet (7.1 m3) of gas per hour. With a mass of 233 kg and an engine displacement of 19.2 L it delivered a continuous power of 2.7 kW. The gas was sucked from the envelope of the balloon, which was kept fully inflated by pumping in compensating air to the air bags inside the main envelope. Due to the consumption of gas, the lifting force decreased, so the range of the airship had been limited.
In 1872 Haenlein obtained a U.S. patent (No. 130 915) to use the otherwise wasted gas in the dirigible's engines. On 13 December, Paul Haenlein tested the first airship with a gas engine in Brünn, achieving 19 km/h. This airship was a direct forerunner of the Lebaudy type, 164 feet (50 m) in length, 30 feet (9.1 m) greatest diameter, and with a cubic capacity of 85,000 feet (26,000 m). The airship achieved 19 km/h. The tests were stopped later, because of a shortage of money.
A propeller of 15 feet (4.6 m) in diameter was driven by the Lenoir engine with 40 revolutions per minute. This was the first instance of the use of an internal combustion engine in connection with aeronautical experiments.
The envelope of the dirigible was rendered airtight by means of an internal rubber coating, with a thinner film on the outside. Syngas, used for inflation, formed a suitable fuel for the engine, but limited the height to which the dirigible could ascend. Such trials as were made were carried out with the dirigible held captive. A full experiment was prevented because funds ran low, but Haenlein's work constituted a distinct advance on all that had been done previously.
This engine type had the disadvantage of requiring either a gas-producer or a large storage capacity for the gas, either of which makes the total weight of the power plant much greater than that of a petrol engine.
Referencesedit
Brockhaus Konversations-Lexikon of 1895
Wolfgang Metzger und Andrea Erne: Alles über Flugzeuge Ravensburger Buchverlag, 2002
paul, haenlein, october, 1835, cologne, january, 1905, mainz, german, engineer, flight, pioneer, flew, semi, rigid, frame, dirigible, family, belonged, citoyens, notables, those, notabilities, economy, administration, culture, mainz, born, 1835, october, 1835c. Paul Haenlein 17 October 1835 in Cologne 27 January 1905 in Mainz was a German engineer and flight pioneer He flew in a semi rigid frame dirigible His family belonged to the Citoyens notables those notabilities who led the economy administration and culture of Mainz Paul HaenleinBorn 1835 10 17 17 October 1835CologneDied27 January 1905 1905 01 27 aged 69 MainzNationalityGermanOccupationEngineerKnown forDevelopment of dirigible with internal combustion engineAirship of HaenleinHaenlein received an education as a mechanical engineer and pattern maker He studied at the Technische Hochschule in Karlsruhe Subsequently he worked as graduated civil engineer for different factories He was the first to create a dirigible airship which was powered by an internal combustion engine This Lenoir type motor obtained its fuel from the gas in the balloon It had four horizontal cylinders which delivered about 6 horsepower 4 5 kW with a consumption of approximately 250 cubic feet 7 1 m3 of gas per hour With a mass of 233 kg and an engine displacement of 19 2 L it delivered a continuous power of 2 7 kW The gas was sucked from the envelope of the balloon which was kept fully inflated by pumping in compensating air to the air bags inside the main envelope Due to the consumption of gas the lifting force decreased so the range of the airship had been limited In 1872 Haenlein obtained a U S patent No 130 915 to use the otherwise wasted gas in the dirigible s engines On 13 December Paul Haenlein tested the first airship with a gas engine in Brunn achieving 19 km h This airship was a direct forerunner of the Lebaudy type 164 feet 50 m in length 30 feet 9 1 m greatest diameter and with a cubic capacity of 85 000 feet 26 000 m The airship achieved 19 km h The tests were stopped later because of a shortage of money A propeller of 15 feet 4 6 m in diameter was driven by the Lenoir engine with 40 revolutions per minute This was the first instance of the use of an internal combustion engine in connection with aeronautical experiments The envelope of the dirigible was rendered airtight by means of an internal rubber coating with a thinner film on the outside Syngas used for inflation formed a suitable fuel for the engine but limited the height to which the dirigible could ascend Such trials as were made were carried out with the dirigible held captive A full experiment was prevented because funds ran low but Haenlein s work constituted a distinct advance on all that had been done previously This engine type had the disadvantage of requiring either a gas producer or a large storage capacity for the gas either of which makes the total weight of the power plant much greater than that of a petrol engine References editBrockhaus Konversations Lexikon of 1895 Wolfgang Metzger und Andrea Erne Alles uber Flugzeuge Ravensburger Buchverlag 2002 Vierteljahreshefte fur Kultur Politik Wirtschaft Geschichte quarterly review Mainz the cradle of the dirigible airship Editor Stadt Mainz Verlag Bonnewitz Communication real madrid 02 2005 airship 2006 from Encyclopaedia Britannica Retrieved from https en wikipedia org w index php title Paul Haenlein amp oldid 1180560667, wikipedia, wiki, book, books, library,
