Tripti Joshi

Conrad Haas

Name  Conrad Haas
Role  Engineer
Died  1576, Sibiu, Romania


Conrad Haas (1509–1576) was an Austrian or Transylvanian Saxon military engineer for the Kingdom of Hungary and Principality of Transilvania.

Conrad Haas httpsuploadwikimediaorgwikipediacommonsthu

He is a pioneer of rocket propulsion. His designs include a three-stage rocket and a manned rocket.

Conrad Haas Conrad Haas und seine Mehrstufenrakete OnlineZeitung 24de

Haas was perhaps born in Dornbach (now part of Hernals, Vienna). He held the post of the Zeugwart (arsenal master) of the Imperial Austrian army under Ferdinand I. In 1551, Stephen Báthory, the grand prince of Transylvania invited Haas to Hermannstadt, Siebenbürgen (now Sibiu, Transylvania, Romania), where he acted as weapons engineer and also he started to teach at Klausenburg (now Cluj-Napoca).


He wrote a German-language treatise on rocket technology, involving the combination of fireworks and weapons technologies. This manuscript was discovered in 1961, in the Sibiu public records (Sibiu public records Varia II 374). His work also dealt with the theory of motion of multi-stage rockets, different fuel mixtures using liquid fuel, and introduced delta-shape fins and bell-shaped nozzles.

Conrad Haas httpsuploadwikimediaorgwikipediacommons88

In the last paragraph of his chapter on the military use of rockets, he wrote (translated):

Conrad Haas Who the Heck is Conrad Haas The Rocketry Blog

"But my advice is for more peace and no war, leaving the rifles calmly in storage, so the bullet is not fired, the gunpowder is not burned or wet, so the prince keeps his money, the arsenal master his life; that is the advice Conrad Haas gives."

Conrad Haas Haas Conrad

Johann Schmidlap, a German fireworks maker, is believed to have experimented with staging in 1590, using a design he called "step rockets." Before discovery of Haas' manuscript, the first description of the three-stage rocket was in Poland credited to the Polish artillery specialist Kazimierz Siemienowicz in his 1650 work, Artis Magnae Artilleriae Pars Prima ("Great Art of Artillery, Part One").

Conrad Haas Pioneers Austrian Space Pioneers c Georg B Deutsch

Conrad Haas Conrad Haas si manuscrisul de la Sibiu
Conrad Haas Conrad Haas Raketenpionier in Siebenbrgen


Conrad Haas Wikipedia

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