Central Aerohydrodynamic Institute
RUS
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TsAGI Developing Advanced Projects for Small Aviation

27 February 2024

Small aviation is among Russia’s most demanded and actively developing industrial segments. Currently developed local aircraft should meet most relevant challenges and requirements. TsAGI (a part of NRC “Zhukovsky Institute”) makes its contribution to the research aimed at creating cutting-edge domestic aircraft.

TsAGI did wind tunnel tests of model of advanced small aircraft distinguished by wingtip basic propulsion and a distributed electric propulsion. The project was developed under MANGo-TsAGI R&D.

The aircraft is expected to be more fuel-efficient than the currently operated aircraft of the same type, due to its wingtip basic propulsion. Conceptually, this arrangement of engines should increase the aircraft’s aerodynamic quality through tip vortex ‘span’ by reversed slipstream.

The configuration was also remarkable with an extra distributed electric propulsion consisting of electric propeller engines installed on wing leading edge. The propulsion aims to increase wing lifting efficiency by high-lift blowing.

Furthermore, the aircraft model was used to test the tools to increase efficiency of STOL aircraft controls—mini-flaps, two-section flaperons (aircraft controls functioning both as a flap and an aileron), etc.

The tests were carried out in TsAGI wind tunnel at different air flow velocities within wide range of attack angle and sideslip angle, and included simulation of operating basic propulsion and distributed electric propulsion.

The tests revealed that wingtip installation of basic propulsion reduced the drag up to 30%, thus increasing aerodynamic quality and, accordingly, decreasing fuel consumption.

Meanwhile, the wind tunnel tests confirmed that distributed electric propulsion used at takeoff and landing increased maximum lift coefficient by 40%, and that high-lift blowing simultaneously by propellers from basic propulsion and distributed electric propulsion increased it up to 70%. This will allow the designed aircraft to use shorter runways and operate in Russia’s hard-to-reach areas.

TsAGI Press Service
+7 (495) 556-40-38
press@tsagi.ru

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