Hypersonic cruise missile X-90 "Koala". Infographics
The X-90 Koala is a hypersonic cruise missile. It was a cruise missile with a folding triangular wing and fuselage, almost completely surrendered to a ramjet engine. The missile, according to the descriptions, was to be equipped with a starting solid propellant rocket engine and marching SPVRD or scramjet on kerosene. According to various data, the rocket Mach number of the X-90 rocket should be from 2 to 4,5. The estimated launch height is 7000 — 20000 m, the range is 3000 km with a starting mass of 15 tons.
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