Central Aerohydrodynamic Institute
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TsAGI Tests Next Generation Executive Jet

12 August 2013

TsAGI scientists have carried out a range of tests on a next generation luxury-class executive jet. The maximum take-off weight of the plane is about 6,000 kg, with a flight range of 3,200 km with six passengers and 4,200 km with three passengers. The tests were carried out in two TsAGI wind tunnels. The scientists tested the longitudinal and lateral characteristics of the aircraft in the T-102 subsonic tunnel, and tested the model at cruise speeds and at large Reynolds numbers at low speeds in the T-128 trans-sonic tunnel.

A feature of the next generation luxury-class executive jet is its drop-shaped fuselage. The aircraft has a straight wing which, according to the prevailing opinion in the aerodynamic community, is incapable of reaching Mach numbers higher than M = 0.7–0.72. However, calculations have shown, and the experiment has confirmed, that the new plane can reach a speed of up to M = 0.77 on maximum range flights and up to M = 0.8 at so-called maximum cruise speed.

“The possibilities of subsonic wing aerodynamics have currently been almost exhausted from the point of view of profiling. Further reserves are to be found in using the favorable aerodynamic interference between elements of the aircraft. The best-known example of this interference is the well-known area rule principle for transonic aircraft. Something similar was used when designing our plane. We have received a patent for this component. So far, the concept has been developed and successfully tested and gives grounds for optimism. We hope that this project will continue and one of the Russian design bureaus will undertake to build this plane,” Plane and Rocket Aerodynamic Department Director Ivan Chernyshev, Candidate of Engineering Sciences, who directed the research, said.

TsAGI Press Service
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