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TsAGI Supersonic Business Jet (SSBJ)

TsAGI [Central Aerohydrodynamic Institute] is working on the development of the shape of the upcoming supersonic business jet (SBJ). It is assumed that it will have expanded transportation features due to transformation of the first-class passenger cabin into economy class. According to the developers, this aircraft, compared with the first-generation supersonic airliners, will have a low level of sonic boom in cruise flight, which will enable operation over populated areas, and thus help to achieve greater economic and transport efficiency.

The work is carried out within the framework of the Federal Target Program, “Development of Russian Civil Aviation in 2002-2010 and for the period up to 2015.” The customer is the Ministry of Industry and Trade of the Russian Federation. A series of studies carried out in TsAGI’s low-speed wind tunnel aim to examine the aerodynamic characteristics of the prospective SBJ during takeoff and landing. The tests produced baseline data to assess the stability and controllability of the aircraft at low speeds in a wide range of angles of attack and gliding angles.

TsAGI has been carrying out studies of the feasibility of creating prospective business and passenger supersonic commercial aircraft (SBJ/ SPJ) since the late ‘90s of the last century. The new generation of aircraft will be different from the first ones (Tu-144 and Concorde) in terms of higher aircraft performance and acceptable environmental performance. This upcoming aircraft must meet modern requirements and restrictions on atmospheric emissions and noise level in airport areas. According to the developers, compliance with prospective sonic boom restrictions and the potential of supersonic cruise operations over populated areas is one of the most important characteristics that determines the commercial feasibility of the project.

Currently, the supersonic passenger aircraft is in the stage of development of external appearance. By 2020, a bench engine can be developed, and in 2025 — a pilot (flight) sample of the product. The new generation of transatlantic range SBJs will have a cruising speed of not less than 1,900 km/h, while modern airliners fly no faster than 900 km/h. It opens up great prospects for business and commercial aviation. In July 2015, a workshop of the Academic Council of the Institute was held at FSUE TsAGI, during which the possibility for a supersonic business jet (UBJ) meeting advanced limits of the International Civil Aviation Organization (ICAO) was discussed. The new generation business jet designed by scientists of FSUE TSAGI must not only develop high speed but must meet state-of-the-art and advanced environmental requirements. One of them is low noise level on site.

Specialists of FSUE TsAGI are considering such a SBJ layout, in which an air intake and external propulsion circuit have longer length dimensions. This enables locating sound-absorbing structures on a substantial area to reduce engine fan noise. The location of the air intake above the air frame further reduces propulsion fan noise. The main noise source in the take-off and climb mode is the engine’s jet. Scientists found out that to meet international noise requirements, jet velocity must be reduced drastically. During the workshop, it was recommended that this condition be taken into account in subsequent SBJ development research.

The Central Aerohydrodynamic Institute imeni Prof. N.E. Zhukovsky (TSAGI) will prepare demonstrators of a passenger supersonic aircraft for testing in two or three years. This was announced by TsAGI General Director Kirill Sypalo 08 October 2018. Sypalo noted that a serial passenger supersonic aircraft may be ready in 2030-2031.

“These works of TsAGI are conducted jointly within the framework of the RUMBLE project with the European community. But also separately with Tupolev Design Bureau and Moscow Aviation Institute, was built the concept of an entire line of aircraft, ranging from a supersonic business passenger aircraft, providing transportation within the country and abroad, to a larger aircraft. Such developments are underway, ”- he said in an interview, which became part of the plot of the Roskosmos television studio. “According to our feelings, we will need two or three years to create demonstrators that will allow us to answer key questions regarding energy and acoustic effects and approve these standards later,” - said Sypalo.

One of the main problems, he pointed out, is the acoustic impact and sound impact both in the airport zone and on the route of a supersonic aircraft. “Currently, TsAGI seems to have managed to find a compromise between the energy efficiency of a supersonic aircraft, determined primarily by the combination of aerodynamics and the location of the engines and their configuration, and the acoustic effect this aircraft has,” - said Sypalo.




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Page last modified: 20-10-2018 18:43:48 ZULU