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"Boosted air-breathing engines
A method for boosting supersonic and hypersonic air-breathing engines by supplying water to their inlet is considered. The method makes it possible to expand the range of application of air-breathing engines with subsonic fuel combustion in terms of flight speed up to eight Mach numbers and flight altitude up to 45 km. At a flight speed of more than three to four Mach numbers, the stagnation temperature of the air becomes higher than the critical temperature for water, which makes its existence impossible when supplied to the engine inlet. The steam formed during the evaporation of water is the working fluid of the internal thermodynamic cycle of an air-breathing engine, which determines the physical essence of the method under consideration. Three options for hyperboosted air-breathing engines are proposed: a hyperboosted turbojet engine, a hyperboosted ramjet engine and a hyperboosted turboejector engine. The characteristics of hyperboosted engines are given. Their advantages over engines that do not have hyperafterburning are noted. The proposed method is of interest for use in aviation and rocket and space technology, in particular, in the creation of aviation rocket and space systems. It is shown that the use of hyperafterburner in a turboejector engine makes it possible to increase the flight speed of the booster aircraft to Mach seven, and the flight altitude to 40 km, which opens up new prospects for space exploration"
https://cyberleninka.ru/article/n/giperforsirovannye-vozdushno-reaktivnye-dvigateli
It is possible that Cirkon has a developed ramjet engine?
A method for boosting supersonic and hypersonic air-breathing engines by supplying water to their inlet is considered. The method makes it possible to expand the range of application of air-breathing engines with subsonic fuel combustion in terms of flight speed up to eight Mach numbers and flight altitude up to 45 km. At a flight speed of more than three to four Mach numbers, the stagnation temperature of the air becomes higher than the critical temperature for water, which makes its existence impossible when supplied to the engine inlet. The steam formed during the evaporation of water is the working fluid of the internal thermodynamic cycle of an air-breathing engine, which determines the physical essence of the method under consideration. Three options for hyperboosted air-breathing engines are proposed: a hyperboosted turbojet engine, a hyperboosted ramjet engine and a hyperboosted turboejector engine. The characteristics of hyperboosted engines are given. Their advantages over engines that do not have hyperafterburning are noted. The proposed method is of interest for use in aviation and rocket and space technology, in particular, in the creation of aviation rocket and space systems. It is shown that the use of hyperafterburner in a turboejector engine makes it possible to increase the flight speed of the booster aircraft to Mach seven, and the flight altitude to 40 km, which opens up new prospects for space exploration"
https://cyberleninka.ru/article/n/giperforsirovannye-vozdushno-reaktivnye-dvigateli
It is possible that Cirkon has a developed ramjet engine?
