Conrad Haas

For the 24 character, see Minor characters in 24#Conrad Haas.

Description of a rocket by Conrad Haas

Conrad Haas (1509–1576) was a military engineer of the Holy Roman Empire, who is believed to be the first person to describe a multistage rocket in writing.

Haas was perhaps born in Dornbach (now part of Vienna). As the Zeugwart (equipment manager) and arsenal master of the Imperial Austrian army under Ferdinand I, he went to NAGYSZEBEN, ERDÉLY (Hungarian Kingdom-Transylvania) (now Sibiu/Nagyszeben, Romania) in 1551, where he oversaw operation of the arsenal.

Between 1529 and 1556, he wrote a book in German language in which he described 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).

Diagram of multi-staged rocket by Conrad Haas

In this work Haas dealt with the technical details of rocket construction, explaining the working principles of a rocket. He described many rocket types, including the multi-stage rocket, bundled rockets, and the idea of modern spacecraft. 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.

In the last paragraph of his work, he wrote (translated):

"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."

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").

Haas, who remained and died in Nagyszeben, present day Sibiu, Romania, was known as Siebenbürger Sachse.

References

• (German) "Erstlich schöne Racketten mancherley Art (article by Richard Friebe"
• (German) Conrad Haas: Raketenpionier in Siebenbürgen
• Burrows, William E. (1998). This New Ocean: The Story of the First Space Age. ISBN 0679445218. 
• Doru Todericiu: Preistoria Rachetei Moderne. Manuscrisul de la Sibiu 1529 - 1569, Editura Academiei RSR, Bucuresti, 1969
• Doru Todericiu: Preistoria Rachetei Moderne. Manuscrisul de la Sibiu 1529 - 1569, Editura Academiei, Bucuresti, 2008

Persondata
Name	Haas, Conrad
Alternative names
Short description
Date of birth	1509
Place of birth
Date of death	1576
Place of death