Schempp-Hirth Gö-4

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Gö-4
Gö-4 III in the Schleissheim aircraft yard
Gö-4 III in the Schleissheim aircraft yard
Type: Glider
Design country:

German Reich NSGerman Reich (Nazi era) German Empire

Manufacturer:

Sportflugzeugbau Göppingen Martin Schempp

First flight:

1937

Number of pieces:

120

The Gö-4 (abbreviation for Göppingen 4; also called Goevier) is a wooden glider .

history

With the two-seater Gö-4, Wolf Hirth and Wolfgang Hütter created a school and training aircraft with seats next to each other based on the Gö-3 Minimoa for the first time. This is unusual for gliders, since the tandem arrangement with pilots sitting one behind the other is preferred because of the possible smaller cabin cross-sections for reasons of flight performance.

In the fall of 1937 a two-seater made its first flight. The Gö-4 was specially designed as a training aircraft. While the Gö-2 still had the disadvantage that the seats were arranged one behind the other, in the Gö-4 teachers and students now sat next to each other in an educationally optimal way. In order to keep the fuselage as narrow as possible, the outer shoulder and arm of each occupant found space in the wing root. The width of the trunk was only 92 cm. This detail goes back to designs by Ulrich and Wolfgang Hütters.

In the meantime, the rooms in Göppingen had become too small for the increased production. Series production of the Gö-4 began in the new Kirchheim unter Teck location .

After the type certification in February 1939, the glider went into series production at Sportflugzeugbau Göppingen Martin Schempp . A total of 120 pieces were built.

construction

The aircraft is a cantilever middle- wing . The fuselage and wings are made of plywood. The rudder unit is self-supporting, the horizontal stabilizer struts downwards.

use

At the time it was built, the Gö-4 was one of the high-performance sailors and was also used in competitions and for training purposes. From June 1st to 3rd, 1939, Führinger and Hofmann flew a new permanent world record on the Hundsheimer Kogel with 49 hours and 45 minutes. Wolf Hirth developed the Hi-20 on the basis of this design , one of the first motor gliders with a retractable engine.

Technical specifications

Parameter Data
crew 1
Passengers 1
length 6.74 m
span 14.8 m
Wing area 19 m²
Glide ratio 19th
Slightest sinking 1 m / s
Empty mass 180 kg
Takeoff mass 350 kg
Wing loading 18.4 kg / m²

Received aircraft

Today there are only a few Gö-4s that are flown and maintained by classic car clubs. A Goevier is on display at the Schleissheim aircraft yard .

See also

literature

  • Peter F. Selinger: Glider stories: the gliders and gliders of the German Glider Museum with model flight on the Wasserkuppe . Stiftung Deutsches Segelflugmuseum Wasserkuppe with model flight, Gersfeld / Rhön 2004, ISBN 3-00-011649-4 .

Web links

Commons : Göppingen Gö-4  - Collection of images, videos and audio files

Individual evidence

  1. ↑ Gö-4. In: Historical aircraft. Schempp-Hirth Flugzeugbau GmbH, 2006, archived from the original on October 16, 2006 ; accessed on October 2, 2017 (description with technical data).
  2. ↑ Flugwerft Schleißheim : Göppingen Gö 4 III, accessed on March 19, 2009