International Journal of Aerospace Engineering

Review Article

Recent Experimental Efforts on High-Pressure Supercritical Injection for Liquid Rockets and Their Implications

Table 1

Some information extracted from works by other investigators reported here. and are injection and chamber temperatures. is chamber pressure. is the injector hole-to-diameter ratio, is the normalized distance from injector exit within which measurements were made. Chehroudi et al. [20].


	(Fluid inj./cham.)	K	MPa	K	Reduced pressure P_r	Inj./chamb. density ratio	Diameter			Raynolds’ number Re	Profile used to measure FWHM
	(Fluid inj./cham.)	K	MPa	K	Reduced pressure P_r	Inj./chamb. density ratio	mm				Profile used to measure FWHM

Oschwald et al.	N₂/N₂	118	4	298	1.17	3.34	1.9	11.5	8.42		Density
Oschwald et al.	N₂/N₂	140	4	298	1.17	12.5	1.9	11.5	1.05		Density
Chehroudi et al.	N₂/N₂	95	6.9	295	2.03	7.1	0.505	100	4.8 to 24.4		Density
Chehroudi et al.	N₂/N₂	110	1.5	295	0.43	40.6	0.505	100	4.8 to 24.5		Density
So et al.	(He + Air)/Air	275	0.1	275	0.08	0.64	9.5		5.1		Concentration and density
So et al.	(He + Air)/Air	275	0.1	275	0.08	0.64	9.5		6.4		Concentration and density
Richards and Pitts	He into Air	275	0.1	275	0.44	0.138	6.35	~50	20–80		Mass fraction
Richards and Pitts	C₃H₈ into Air	275	0.1	275	0.02	1.56	6.35	~50	40–120		Mass fraction