Story ID: 
TsAGI Plans ICAO Chapter 14-compliant SSBJ
By: Vladimir Karnozov
Caption: Russian company expects aircraft to produce a sonic boom with intensity less than 72 dBA or 78 dB SPL (sound pressure level).
Word Count: 218
At the MAKS’2017 International Aerospace Salon in Moscow in July, the Zhukovsky Central AeroHydrodynamic Institute (TsAGI) exhibited a scale model of a Supersonic Business Jet/Supersonic Commercial Jet (SSBJ/SSCJ). According to TsAGI, the airplane is intended to comply with ICAO Chapter 14 noise levels and produce a sonic boom with intensity less than 72 dBA or 78 dB SPL (sound pressure level). The company believes the latter figures will make supersonic flight possible over land.

The effort is part of long-term scientific research to produce “a two-regime” aerodynamic layout that would be efficient at both high-subsonic (Mach 0.90) and supersonic (Mach 1.5 to 2.0) speeds, which TsAGI asserts is the key to success for a civil supersonic jet. The model exhibited at MAKS’2017 is intended to cruise at up to 1,133 knots and provide range of 4,000 to 4,640 nm, while ensuring that landing speed does not exceed 162 knots.

At the MAKS show TsAGI also released images of a slightly different-shaped model being tested in the T-102 wind tunnel. TsAGI is conducting the SSBJ/SSCJ studies jointly with the Aviadvigatel and NPO Saturn Lyulka engine design houses. The Central Institute for Aviation Motors is also involved in the research into “advanced highly parametric dual-flow turbojet engines with regulated mixer and three-flow variable cycle engines” for propulsion.

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