Research Progresses of Flash Evaporation in Aerospace Applications

Table 1

Propulsive performances of cold gas propulsion and flash evaporation jet propulsion [48].

	Cold gas propulsion	Flash evaporation jet propulsion	Remarks
Pattern	Phase change occurs in the tank	Phase change occurs in the nozzle throat
Thrust	585 mN	860 mN	0.86 MPa
Special impulse	1108 Ns/kg	343 Ns/kg	0.86 MPa
Density special impulse	7501 Ns/m^3	209271 Ns/m^3	0.86 MPa
Characteristic	The liquid-gas conversion is sufficient, the pressure in the tank drops rapidly, and the thrust is unstable	The liquid-gas conversion is incomplete, the pressure in the tank is basically stable, and the thrust is constant
Heat control demand	Larger power thermal control is required	Larger power thermal control is not required