__NOTOC__ The Walraven 2 was a colonial Indonesian, twin-engine cabin

monoplane A monoplane is a fixed-wing aircraft configuration with a single mainplane, in contrast to a biplane or other types of multiplanes, which have multiple planes. A monoplane has inherently the highest efficiency and lowest drag of any wing confi ...

, commissioned by the Chinese-Indonesian aviation pioneer Khouw Khe Hien, designed by Laurens Walraven, and built by personnel of the Netherlands East Indies Army Air Force during the 1930s.

Design and development

The Walraven 2 was a two-seat low-wing cabin monoplane powered by two

Pobjoy Niagara The Pobjoy Niagara is a British seven-cylinder, air-cooled, radial, aero-engine first produced in 1934. The design ran at higher speeds than conventional engines, and used reduction gearing to lower the speed of the propeller. This led to a noti ...

radial engines. Utilising a Göttingen 681 airfoil, the aircraft was designed by Laurens Walraven, who was Chief Engineer of the

Royal Netherlands East Indies Army Air Force The Royal Netherlands East Indies Army Air Force ( nl, Militaire Luchtvaart van het Koninklijk Nederlands-Indisch Leger, ML-KNIL) was the air arm of the Royal Netherlands East Indies Army in the Dutch East Indies (now Indonesia) from 1939 until ...

, to the specification of Khouw Khe Hien, son of the millionaire Khouw Kim Goan.

Operational history

The aircraft first flew on 4 January 1935. Finding the aircraft to be satisfactory, the younger Khouw intended to start an aircraft company in the Netherlands East Indies, to build aircraft designed by Walraven.AAHS ''Journal'', Volume 28, p.146 To promote this venture, the Walraven 2 was flown from Indonesia to the Netherlands and back at the end of 1935. His sister, Khouw Keng Nio, also made a name for herself by becoming the first woman of Chinese or colonial Indonesian nationality to become a certified pilot in March 1936. Despite this promising start to the venture, Khouw Khe Hien was killed in an air crash in February 1938, and the factory plan came to naught. The aircraft was placed in storage shortly thereafter, and was destroyed on 19 February 1942 in a Japanese air attack.

Specifications

References

;Notes ;Bibliography * * {{refend Khouw Kim Goan family 1930s Indonesian civil utility aircraft 2 Low-wing aircraft Aircraft first flown in 1935 Twin piston-engined tractor aircraft