TheDornier Do 20 was a proposed commercialflying boat designed in the mid-1930s. It was envisaged as an improved and enlarged version of theDornier Do XFlugschiff (flying ship) that first flew in 1929. The Do X was not entirely successful, being under-powered despite using six pairs of engines mounted above the wing, and only three were built. Dornier proposed to overcome the shortcomings of the Do X by replacing the pylon-mounted engines with four pairs ofdiesel engines each of about 1,000horse power, each pair fitted into anacelle fared into theleading edge of the wing and driving one of the aircraft's fourpropellers.
A model of the aircraft was exhibited at the 1936 International Aviation Exhibition in Stockholm (ILIS) and details were published in the 1937 edition ofJane's All the World's Aircraft. No orders were received and no Do 20 aircraft were ever built.
Grey, C.G., et al., ed. (1937).Jane's all the World's Aircraft, 1937 Edition. London: Sampson Low, Marston & company, ltd.
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