ZHANG Bo, JI Hong-hu, LUO Ming-dong, et al. Experimental investigation of infrared suppressing characteristics of rectangular nozzles with large aspect ratio[J]. 2007, 22(12).
ZHANG Bo, JI Hong-hu, LUO Ming-dong, et al. Experimental investigation of infrared suppressing characteristics of rectangular nozzles with large aspect ratio[J]. 2007, 22(12).DOI:
The infrared suppressing characteristics of five rectangular convergent nozzles with different aspect ratios were investigated experimertey.The aspect ratio of the rectangular nozzles is 1
4
8
12
and 16
named AR1~AR16 respectively
while the axisymmetric nozzle is named AR0.The results indicate that infrared radiation from rectangular nozzle decreases with the increase of detection angle
and the magnitude of infrared radiation is smaller than axisymmetric one
and would accelerate with the rise of aspect ratio.