AeroTV at OSH21: Deliveries of teTra’s Mk-5 EVTOL Biplane Imminent | Aero-News Network
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AeroTV at OSH21: Deliveries of teTra’s Mk-5 EVTOL Biplane Imminent

Award-Winning, 33-Propeller Aircraft Impresses Judges and Buyers

Japanese aerospace concern teTra (teTra Aviation Co. Ltd) is a Tokyo-based start-up engaged in the design, manufacture, and sale of electric vertical takeoff and landing (eVTOL) aircraft. The company was founded in 2018 and, only two-years later, won the prestigious Pratt and Whitney Disruptor Prize at the Boeing-sponsored GoFly competition in San Francisco.

In July 2021 teTra unveiled its Mk-5, a one-passenger eVTOL aircraft featuring tandem wings, rear-wing winglets, a single vertical tail-stabilizer, and a fixed, tricycle undercarriage. The Mk-5 is powered by 33-thrust-assemblies contained in 17- quasi-cylindrical pods. Each of the vehicle’s four wing-sections is underslung with four pods. Every pod comprises two, vertically-mounted propellers. The remaining pod is mounted longitudinally at the vehicle’s aft, and sports a larger, single, pusher-propeller.

In vertical flight, the aircraft utilizes the 32 underwing-propellers. Thrust for forward flight is provided by the single pusher-prop. The lack of tilt-propellers reduces the Mk-5’s weight, complexity, and cost, and facilitates its 260 km/h (162 mph) cruise speed, one-hour flight-time, and 260 km (162 m) range.

The safety of Mk-5 pilots and cargo is augmented by Distributed Electric Propulsion (DEP), a feature which ensures the failure of one or more thrust-assemblies will be compensated for by the remaining, operable thrust-assemblies. Though sustained flight under partial-power is not feasible, the DEP system allows for safe, controlled landing of the Mk-5.

Since the aircraft’s unveiling at AirVenture Oshkosh 2021, teTra asserts it has received orders for both the SN3 (unmanned) and SN4 (manned) iterations of the Mk-5. The company plans to have subject models delivered by the end of 2022.

Aero-TV is a production of the Internationally syndicated Aero-News Network. Seen worldwide by hundreds of thousands of aviators and aviation adherents, ANN's Aero-TV has produced over 5000 aviation and feature programs, including nearly 2000 episodes of our daily aviation news program, AIRBORNE UNLIMITED, currently hosted by Holland Lee. Now in its third decade of operation, parent company Aero-News Network, has the most aggressive and intensive editorial profile of any aviation news organization and has published nearly a half-million news and feature stories since its inception -- having pioneered the online 24/7 aviation new-media model that so many have emulated.

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