DFS 39

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DFS 39
Lippisch DFS-39.jpg
DFS 39
Type: Experimental airplane
Design country:

German Reich NSGerman Reich (Nazi era) German Empire

Manufacturer:

DFS

Number of pieces:

1

Model of the DFS 39

The DFS 39 Delta IVc was a tailless test aircraft from the German Research Institute for Glider Flight (DFS).

development

The aircraft was developed in 1935 as a test aircraft of the Delta series based on the Fieseler F 3 . The aim of this series of tests, designed by Lippisch, was to examine tailless aircraft, i.e. aircraft without a horizontal stabilizer, for their flight stability. The Delta IVc was created as a result of previous samples and at the suggestion of Lippisch. It should be demonstrated that the stability around the vertical axis can be achieved by downwardly angled wing tips together with keeled surface extensions. With the Delta IVc this theory could be proven to be correct.

construction

The aircraft was designed as a tailless, self-supporting low- wing aircraft made of wood. The trunk was formed into a cutting edge that stood perpendicular to the rear. In addition, a fixed normal chassis and an air-cooled Pobjoy radial engine with 85 hp were used. The two-man crew sat one behind the other in separate seats.

Technical specifications

Two-sided view DFS 39
Parameter Data DFS 39 d - Delta IVc
crew 1
Passengers 1
length 5.4 m
span 9.6 m
height 1.8 m
Wing area 13.4 m²
Wing extension
Empty mass 390 kg
Max. Takeoff mass 600 kg
Cruising speed
Top speed 220 km / h
Service ceiling 6300 m
Range 1350 km
Engines a Pobjoy radial engine ; 85 hp (63 kW)

literature

Web links

Commons : DFS 39  - collection of images, videos and audio files