论文信息 - Wall pressure and thrust of a dual bell nozzle in a cold gas facility

Wall pressure and thrust of a dual bell nozzle in a cold gas facility

A dual-bell nozzle has been tested in the ONERA-R2Ch wind tunnel within the CNES PERSEUS program. The wall pressure distributions and the thrust for the two §ow regimes have been characterized in the nozzle pressure ratio (NPR) range from 51 up to 597. A hysteresis on the transition NPR between the two §ow regimes has been observed according to the evolution of NPR. The duration for the switch between the two §ow regimes is less than 10 ms. The hysteresis of about 20%

[1] Yasunori Nagata,et al. Design criterion of the dual-bell nozzle contour , 2005 .

[2] Gerald Hagemann,et al. Critical Assessment of Dual-Bell Nozzles , 1999 .

[3] M. Horn,et al. Dual-bell altitude compensating nozzles , 1993 .

[4] Gerald Hagemann,et al. Experimental and analytical design verification of the dual-bell concept , 2000 .

[5] R. H. Schmucker. Status of flow separation prediction in liquid propellant rocket nozzles , 1974 .

[6] Masaki Sasaki,et al. Investigation on Characteristics of Conventional-Nozzle-Based Altitude Compensating Nozzles by Cold-Flow Tests , 2006 .

[7] Charles R. Foster,et al. Experimental Study of Gas-Flow Separation in Overexpanded Exhaust Nozzles for Rocket Motors , 1949 .

[8] F. Nasuti,et al. Flow analysis and methods of design for dual-bell nozzles , 2001 .

[9] Ralf Stark,et al. Flow transition in dual bell nozzles , 2008 .

[10] E. Zukoski. Turbulent Boundary-Layer Separation in Front of aForward-Facing Step , 1967 .