Gas - jet propulsion system of monoblock design for Czech Magion SC.

The gas-jet propulsion systems (GJPS) are intended for suppressing the spacecraft (SC) initial disturbances after separation from rocket, for SC spatial orientation, orbital correction and spin up about any of SC axes. During GJPS operation, gas is supplied to the engines from a bottle through a reducer that decreases and stabilizes its pressure at required level. When the engine ignites, the access of gas to supersonic nozzle is opened as a result of which thrust is created. The GJPS have been in operation since 1965. More than 10 types of GJPS were developed in all, including for Russian Meteor SC, Indian Bchaskara, Ariabata SC, Czech Magion SC, and many Ukrainian SC of various purposes.

- High reliability due to simple design and long-standing experience of series production.
- Serviceability in wide structural temperature range between minus 40 and plus 50°C without energy consumption for thermostatic control.
- Environmentally friendly, fire-safe propulsive mass having no effect on SC equipment serviceability, including optical and solar arrays.
- Hight efficiency of using the energy of propulsive mass due to reduction of resudual pressure in the bottles down to 0.3 MPa and super high degree of gas expansion in the nozzles.
- Possibility of multiple change of thrust level by radio commands from the ground 2-3 times as high as nominal value.
- Possibility of monoblock design and installation on different SC without modification.
- Low cost.

For total thrust pulse of up to 3000 NЧs, the gas-jet propulsion systems is the optimal decision by reliability of operation, mass, cost, accuracy of SC motion control, and power consumption.