Mirage III C with the SEPR engine.
In France, a rocket engine of the SEPR type for combat aircraft was developed. The resulting version of the SEPR 841 engine could be mounted on Mirage III C aircraft. The engine was mounted under the rear part of the fuselage with bolted connections. Aviation kerosene is the fuel and nitric acid is the oxidant. A mixture of triethylamine and xylidine, called TX2, is used to achieve ignition. The SEPR 841 engine achieves a thrust of 15 kN (1,530 kG). The Mirage III C plane with the SEPR 841 engine made its first flight in 1960. In 1961, aircraft with the option of an additional rocket engine entered service, which lasted until 1970.
Written by Karol Placha Hetman