Recent Experimental Efforts on High-Pressure Supercritical Injection for Liquid Rockets and Their Implications
Figure 18
Images of a coaxial jet at approximately the same inner-jet mass flow rates (~275 mg/s). Columns are at about the same outer-annular-jet mass flow rates. For each row, the annular mass flow rate starts at a zero value to 2800 mg/s and increases from the left column to the right. The chamber pressure levels for images 1–9 are subcritical (~1.41 MPa), for 11–19 are near-critical (~3.46 MPa), and for 21–29 are supercritical (~4.77 MPa). Inner-and outer-tube flow average temperatures at injector exit are 170 K and 112 K, respectively. Davis and Chehroudi [42].
