Paul Haenlein, Date of Birth, Place of Birth, Date of Death

    

Paul Haenlein

German aerospace engineer

Date of Birth: 17-Oct-1835

Place of Birth: Mainz, Rhineland-Palatinate, Germany

Date of Death: 27-Jan-1905

Profession: engineer, balloonist, aerospace engineer

Nationality: Germany

Zodiac Sign: Libra


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About Paul Haenlein

  • 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. 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.

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