Blohm & Voss Ha 139

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Ha 139
BV Ha 139 Nordwind c1938.jpg
Ha 139 Nordwind in 1938
Rolemail/cargo plane
Manufacturer Blohm & Voss
First flight October 1936
Introduction 1937
Primary user Deutsche Luft Hansa
Produced1936–1938
Number built3
Variants Blohm & Voss BV 142

The Blohm & Voss Ha 139 was a German all-metal inverted gull wing floatplane. With its four engines it was at the time one of the largest float-equipped seaplanes that had been built. The inboard engines were mounted at the joint between the inboard anhedral and outboard dihedral wing sections, above the pylon-mounted floats.

Contents

Further development of the Ha 139 led to the land-based version Blohm & Voss BV 142 which had its first flight in October 1938.

Operational history

A Ha 139 on board the catapult ship Friesenland. Friesenland (1937).jpg
A Ha 139 on board the catapult ship Friesenland.

The aircraft were flown by Deutsche Luft Hansa on transatlantic routes between 1937 and 1939, predominantly between Bathurst, The Gambia and Natal, Brazil. Catapult-launched from an aircraft tender they were able to transport 500 kilograms (1,100 lb) of mail over a distance of up to 5,000 kilometres (3,100 mi).

On the outbreak of World War II, the planes were transferred to the Luftwaffe and used for transport, reconnaissance and minesweeping work over the Baltic Sea. They were not particularly suited for military use.

Variants

Data from: Aircraft of the Third Reich [1]

Ha 139 Nordstern leaving the Friesenland in 1938. Ha 139 Nordstern taking off from Friesenland c1938.jpg
Ha 139 Nordstern leaving the Friesenland in 1938.
Projekt 15
Catapult launched floatplane mail-carrier design for Deutsche Lufthansa (DLH), became the Ha 139.
Projekt 20
A reconnaissance-bomber derivative of Projekt 15 submitted to the Reichsluftfahrtministerium (RLM) (German air Ministry) which generated little interest.
Ha 139 V1
D-AMIE, named Nordmeer — First of two initial prototypes
Ha 139 V2
D-AJEY, named Nordwind — Second of two initial prototypes
Ha 139 V3
D-ASTA, named Nordstern — Third prototype with longer wingspan, increased wing area and modified engine mounts.
Ha 139B
The Ha 139 V3 was given new triangular fins, and re-designated while in service with DLH.
Ha 139B/Umbau
After service with DLH, the Ha 139B was modified as the Ha 139B/Umbau with an extended glazed nose accommodating a navigator and a spherical Ikaria mount for a machine-gun. Additional machine guns were mounted in the cockpit roof hatch and in lateral mountings on either side of the rear fuselage.
Ha 139B/MS
The Ha 139B/Umbau was later modified into a minesweeper (Minensuch) with a magnetic cable loosely run between the nose, wing-tips, and tail.

Specifications (Ha 139B/Umbau)

Model of the third prototype in Minensuch (minesweeper) configuration at Museum of Flight Blohm & Voss Ha 139 Minesweeper.jpg
Model of the third prototype in Minensuch (minesweeper) configuration at Museum of Flight

Data fromGreen [1]

General characteristics

Performance

4,950 km (3,080 mi) at 200 km/h (120 mph)

Armament

See also

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References

Notes
  1. 1 2 Green, William (2010). Aircraft of the Third Reich (1st ed.). London: Aerospace Publishing Limited. p. 34. ISBN   978-1-900732-06-2.
Bibliography