Dornier’s Do-29 Broke Ground in STOL Before It Was Fashionable

The clean-sheet design harnessed mechanical complexity in pursuit of incredible performance.

Tuesday, May 10, 2022 at 08:53 AM ET

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Utilizing vectored thrust and coupled engines that could individually power both propellers, the Dornier Do-29 broke new ground in STOL engineering. [Photo: Jason McDowell]

Key Takeaways:

The Dornier Do-29 was an experimental aircraft developed to research extreme slow flight and short takeoff and landing (STOL) performance using vectored thrust.
It featured two wing-mounted engines driving pusher propellers that could tilt downwards up to 90 degrees, along with an engine interconnect system for safety.
Despite its innovative engineering, the Do-29 struggled to meet its ambitious targets, achieving significantly higher minimum speeds and longer takeoff/landing distances than predicted.
Only two Do-29s were built, with one surviving aircraft now preserved and on display at the Dornier Museum.

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Since it was founded in 1914, Dornier was an aircraft company that was never short on imagination. From early 12-engined flying boats to World War II military aircraft and regional airliners to modern, composite flying boats, the OEM’s name has decorated a bewildering variety of aircraft types. Among them, hiding in the footnotes of the company’s history, are some truly unique examples of engineering.

Spearheaded by the German federal agency tasked with aerospace research, the Dornier Do-29 was an experimental aircraft intended to study the feasibility of utilizing vectored thrust to achieve extreme slow flight and short takeoff and landing (STOL) performance. A clean-sheet design, it utilized a high-wing, tailwheel configuration. Although as a test aircraft, it was configured for only one occupant, it was roughly the size of the de Havilland Beaver and the similarly sized fuselage could in theory be configured to carry four to six passengers.