Hans Jacobs

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Hans Jacobs
Born 30 April 1907
Died 24 October 1994

Hans Jacobs (30 April 1907 - 24 October 1994) was a German sailplane designer and pioneer.[1] He had been taught sailplane design by Alexander Lippisch, designer of many gliders during the 1920s and the 1930s. As the head of the Deutsche Forschungsanstalt für Segelflug (DFS - German Research Institute for Sailplane Flight) at Darmstadt in the years before World War II, he was responsible for a number of highly successful designs, including the DFS Rhönsperber, DFS Rhönadler, DFS Habicht, DFS Weihe, DFS Kranich,[2] and the DFS 230 assault glider. Hans also designed a glider-seaplane, the "Sea Eagle", test flown by Hanna Reitsch.[3]:105 In 1936, Hans developed self-operating dive brakes, on the upper and lower surface of each wing, for gliders.[3]:108 He designed the DFS 230 used in the Battle of Fort Eben-Emael.[3]:157

The DFS Olympia Meise was selected in 1939 as the glider for the 1940 Summer Olympics, but the games were cancelled. The design was taken up after the war and produced in large numbers in the UK by Elliotts of Newbury, in France by Nord Aviation, in the Netherlands and in Switzerland.[4]

When the prohibition on German aviation under the Allied occupation ended in 1951, Jacobs designed and marketed a significantly different, updated version of the Kranich.[5]

In 1932 Jacobs authored a seminal work on sailplane design, Werkstattpraxis für den Bau von Gleit- und Segelflugzeugen ("Workshop Practice for the Construction of Gliders and Sailplanes"). Updated in several editions, this "became and remains the standard work" on the construction of wooden gliders.[6] The Vintage Sailplane Association published in July 2016 the English translation of this very important work.

Jacob's glider designs[edit]

From Sailplanes 1920-1945[7]

Hols der Teufel (1928-9)
Poppenhausen (1929)
Rhönadler (1932)
Rhönbussard (1933)
Rhönsperber (1935)
Kranich (1935)
Sperber Senior (1936)
Sperber Junior (1936)
Habicht (1936)
Seeadler (1936)
Reiher (1937)
DFS 230 (1937)[citation needed]
Weihe (1938)
Meise (Olympia) (1939)
DFS 331 (1942)[citation needed]
Kranich 3 (1952)[5]

References[edit]

  1. ^ "Pioniere des Segelfluges: Hans Jacobs". Segelflugmuseum.de. 2007-02-10. Retrieved 2011-12-28. 
  2. ^ Simons, Martin (2006). Sailplanes 1920-1945 (2nd revised ed.). Königswinter: EQIP Werbung & Verlag GmbH. pp. 106–128. ISBN 3 9806773 4 6. 
  3. ^ a b c Reitsch, H., 1955, The Sky My Kingdom, London: Biddles Limited, Guildford and King's Lynn, ISBN 1853672629
  4. ^ Simons (2006). Sailplanes 1920-1945. pp. 128–130. 
  5. ^ a b Hardy, Michael (1982). Gliders & Sailplanes of the World. London: Ian Allan Ltd. p. 28. ISBN 0 7110 1152 4. 
  6. ^ Simons (2006). Sailplanes 1920-1945. p. 130. 
  7. ^ Simons (2006). "Chapter 10". Sailplanes 1920-1945.