Hermann Föttinger

Short description: German engineer (1877–1945)

Hermann Föttinger (9 February 1877 in Nuremberg - 28 April 1945 in Berlin) was a German engineer and inventor. In the course of his life he submitted over 100 patent applications, but he is most notable for inventing fluid coupling.

## Contents

* 1 Career
* 1.1 AG Vulcan Stettin
* 1.2 Technische Hochschule in Danzig
* 1.3 Technical University of Berlin
* 2 Achievements
* 2.1 Fluid dynamics
* 2.2 Railcars
* 2.3 Internal combustion engines
* 3 Literature
* 4 References
* 5 External links

## Career

From 1895 to 1899 Hermann Föttinger studied electrical engineering at the Technical University of Munich.

### AG Vulcan Stettin

From 1904 he worked as a chief designer in the shipyard AG Vulcan Stettin. He was responsible for the introduction and testing of new steam turbines. During this time he developed the fluid coupling consisting of a pump and a turbine in a unit that in further development resulted in the automatic automobile transmission.

### Technische Hochschule in Danzig

In 1909 he obtained a position at the Technische Hochschule in Danzig where he started the institute for fluid dynamics technology.

### Technical University of Berlin

In 1924 he took up a position as head of the current department of physics and turbines at the Technical University of Berlin. Here he remained until his death from grenade fragments in April 1945.

## Achievements

### Fluid dynamics

Föttinger laid the basis of the fluid dynamics from Euler over Rankine and Hermann von Helmholtz to its current uses in the boundary layer of airplane wings and propulsion theory.

### Railcars

Together with Franz Kruckenberg he started the Flugbahn-Gesellschaft mbH to develop the Schienenzeppelins (railroad cars).

### Internal combustion engines

Föttinger's patents for internal combustion engines include:

* US1636050, Device for damping the oscillations of multiple crank shafts[1]
* US2244453, Scavenging of two-stroke cycle internal combustion engines[2]

## Literature

* Hans Jürgen Reuß: ' 'Hermann Föttinger' '. In: Journal (2008) internationally maritime HANSA, 6, S.  58-59. Hamburg: Navigation publishing house "Hansa" C. Schroedter & Co. (Gmbh & Co. KG),2008.

## References

1. ↑ "Espacenet - Original document". Worldwide.espacenet.com. 1927-07-19. http://worldwide.espacenet.com/publicationDetails/originalDocument?CC=US&NR=1636050A&KC=A&FT=D&ND=3&date=19270719&DB=worldwide.espacenet.com&locale=en_EP. Retrieved 2014-07-19.
2. ↑ "Espacenet - Original document". Worldwide.espacenet.com. 1941-06-03. http://worldwide.espacenet.com/publicationDetails/originalDocument?CC=US&NR=2244453A&KC=A&FT=D&ND=3&date=19410603&DB=worldwide.espacenet.com&locale=en_EP. Retrieved 2014-07-19.

## External links

* http://www.hfi.tu-berlin.de/Foettinger/Projekte/SVT137155/svt137155.pdf[yes|permanent dead link|dead link}}] description of SVT 137 155
* Hermann Föttinger in the German National Library catalogue
* Georg Schnadel (1961) (in de), Hermann Föttinger, 5, Berlin: Duncker & Humblot, pp. 283–284, https://daten.digitale-sammlungen.de/0001/bsb00016321/images/index.html?seite=299
* detailed representation Föttingers life and creating the institute for current mechanics and technical acoustics of the TU Berlin, ehem. Hermann-Föttinger-institute for current mechanics
* in/volltexte/2008/2012/html/festschrift/foettinger.htm biography in the commemorative volume ' '125 years University of Berlin' technical '[yes|permanent dead link|dead link}}]

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