Heinkel He 42

Heinkel He 42
Type:	Seaplane
Design country:	German Empire
Manufacturer:	Ernst Heinkel Flugzeugwerke
First flight:	Early 1930
Commissioning:	February 1930
Production time:	1933 to 1934
Number of pieces:	203

The Heinkel HD 42 (later Heinkel He 42 ) was a seaplane that was initially built for the German Aviation School (DVS) and was then used by the German Air Force to train sea ​​pilots well into the Second World War .

development

As early as 1929, Heinkel , at that time still camouflaged, developed the sea double-decker HD 42 for the German Aviation School . The initial model for this was the HD 24 from the 1920s, which gained a good reputation in service with the Swedish Navy and with which Gunther Plüschow carried out his famous flights over Tierra del Fuego . The prototype HD 42a (Wnr. 333) still had a BMW Va engine and was tested at DVS Warnemünde in early 1930. Initial stability problems have been eliminated by making changes to the surfaces and the fuselage. The aircraft was registered for the DVS in February 1930 with the registration D-1793. In the same year the school ordered four more aircraft (Wnr. 372 to 375), which were delivered and certified as H D 42b , now with Junkers L 5-G engines , in April 1931. Changes were also necessary to them, after which the aircraft was then judged to be well suited for its task.

production

Another five aircraft were built for DVS in 1932 and approved in October with the new uniform designation He 42 C. It was the Wnr. 419 to 422 and 428. Series production began in 1933 with 14 He 42 D (Wnr. 443 to 456), which have now been taken over by the Luftwaffe , which is under construction under the code D-2543 to D-2556 . From 1934 189 He 42 E aircraft followed , which were distributed to the various schools and flew until the end of the Second World War.

description

The Heinkel He 42 was a two-seater two-swimmer biplane, the hull of which consisted of a welded tubular steel frame with a rectangular cross-section and a rounded top. While the engine area was clad with easily removable light metal sheets, the rest was covered with fabric. The wings, each connected to one another with an N-shaped handle, did not require any bracing thanks to the stiffening float structure. The upper and lower ailerons were connected by bumpers. The tail unit consisted of a tubular steel frame and, like the wings, was covered with fabric. The heavily keeled wooden floats had one step and were divided into six compartments each sealed from one another by bulkheads. 350 l of the fuel supply were in a fuselage container behind the firewall and a further 75 liters in a container in the upper wing.

Technical specifications

HD 42 on a test flight

Parameter	Data from the Heinkel He 42C-2
crew	2
Engine	Junkers L 5 Ga without reduction gear,
Starting power	380 HP (279 kW) at a speed of 1700 rpm at a height of 0 m
rated capacity	340 HP (250 kW) at a speed of 1600 rpm at an altitude of 1000 m
specific fuel consumption	240 g / PS h
Propeller	Two-bladed wooden propeller with a diameter of 3.0 m
span	above 14.0 m below 13.0 m
length	10.6 m
height	4.3 m
Wing area	56.0 m²
Wing loading	43.2 kg / m²
Power load	6.35 kg / hp
Empty mass	1710 kg
additional equipment	95 kg
crew	180 kg
fuel	290 kg
Lubricant	25 kg
Payload	120 kg
Takeoff mass	2420 kg
Top speed	200 km / h at 0 m altitude 192 km / h at 1000 m altitude 185 km / h at 2000 m altitude
Cruising speed	190 km / h at 0 m altitude 185 km / h at 1000 m altitude 175 km / h at 2000 m altitude
Landing speed	80 km / h
optimal range	750 km at Vmax at 2000 m altitude 800 km Vr at 2000 m altitude 1050 km
Rise time	5.6 min at 1000 m altitude 13.5 min at 2000 m altitude 27.2 min at 3000 m altitude
Summit height	4200 m
Armament	1 × MG 15 in the slewing ring or 1 × MG 17 rigid

See also

• List of aircraft types

literature

• Volker Koos: Ernst Heinkel Flugzeugwerke 1922–1932. Heel Verlag, 2006, ISBN 3-89880-502-6 .
• Karl Ries: Research on the German aircraft role. Verlag Dieter Hoffmann, 1977.
• Heinkel - Chronicle and data sheets of the Heinkel-Flugzeugbau company. Reprint of the Heinkel type sheets, AVIATIC Verlag, ISBN 3-925505-08-3 .
• Volker Koos: Ernst Heinkel Flugzeugwerke 1933–1945 , p. 14, Heel Verlag, Königswinter, 2003

Web links

Commons : Heinkel HD 42  - Collection of images, videos and audio files

Individual evidence

1. ^ Robert Thoms: Ernst Sagebiel. Tabular curriculum vitae in the LeMO ( DHM and HdG ) "The German Aviation School (DVS) was a cover organization of the air force that was being established at the beginning of the NS regime"
2. ↑ Volker Koos: Ernst Heinkel Flugzeugwerke 1933-1945 , p. 14, Heel Verlag, Königswinter, 2003