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

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

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]
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Key Takeaways:

  • The Dornier Do-29 was an experimental German aircraft designed to study the feasibility of utilizing vectored thrust for achieving extreme slow flight and short takeoff and landing (STOL) performance.
  • It featured a unique design with two wing-mounted engines driving controllable-pitch pusher propellers that could tilt downward up to 90 degrees, incorporating safety features like engine interconnectivity.
  • While predicted for very short takeoff/landing distances and low minimum airspeeds, actual flight tests revealed its performance fell short of these targets, ultimately leading to its retirement.
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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.

Jason McDowell

Jason McDowell is a private pilot and Cessna 170 owner based in Madison, Wisconsin. He enjoys researching obscure aviation history and serves as a judge for the National Intercollegiate Flying Association. He can be found on Instagram as @cessnateur.

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