Glaser-Dirks DG-400

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Glaser-Dirks DG-400
DG-400 with extended drive
Type: Glider the FAI-15-m or 18-m class
Design country:

Germany Federal RepublicFederal Republic of Germany BR Germany


DG aircraft construction

First flight:

May 1, 1981

Production time:


Number of pieces:


The Glaser-Dirks DG-400 , a self- launching glider based on the DG-202 , was designed by Wilhelm Dirks and had its maiden flight on May 1, 1981 . It can be flown with a 15 m wingspan or with optional wing tips that increase the wingspan to 17 m. The inner wings of the DG-400 are made of CFRP , the outer wings made of GFRP , the fuselage made of GFRP with CFRP in the area of ​​the engine. The engine , a Rotax 505 with 32 kW, is extended and retracted with an electric spindle motor .

The DG-400 has a so-called parallelogram control for the height control, through which an unintentional operation during flight through gusts is to be excluded. The flaps have automatic connections, the ailerons and airbrakes (Schempp-Hirth flaps) are connected manually via L'Hotellier connections. The elevator is automatically connected during assembly.

290 units of the DG-400 were manufactured by Glaser-Dirks Flugzeugbau, today DG Flugzeugbau , between 1981 and 1990. The good customer response was also based on the DEI engine display and control unit, which enabled even less technically experienced people to control a motorized aircraft in the simplest possible way.

DG-400, front view of the fuselage
DG-400, cockpit

Technical specifications

DG-400 DG-400/17
span 15 m 17 m
length 7 m
height 1.4 m
Wing area 10 m² 10.57 m²
Elongation 22.5 27.34
Wing profile Wortmann FX67 K170 / 17
Masses and payload
Seats 1
Empty mass 306 kg 310 kg
Water ballast 90 kg
Max. Takeoff mass 480 kg 460 kg
Wing loading 38.6-48 kg / m² 36.9-43.5 kg / m²
Flight performance
Glide ratio 42 at 110 km / h 45
Minimum speed 65 km / h 63 km / h
Top speed 270 km / h
Slightest sinking 0.6 m / s at 72 km / h 0.54 m / s
Engine Rotax 505 ; 32 kW (approx. 40 PS)

See also

Web links

Commons : DG-400  - Collection of Images, Videos and Audio Files

Individual evidence

  1. Archive link ( Memento from March 4, 2016 in the Internet Archive )
  2. a b Thomas Bergmann: DG 400 . In: gliding . No. 6 , 2009, p. 65 f . ( [PDF; 610 kB ; accessed on July 4, 2019]).