Numerical Simulation of Helicopter Rotor Performance Degradation in Natural Rain Encounter

Table 2

CFD simulation data of the SC1095 blade airfoil in rain condition.

AOA (deg)	Lift coefficient			Drag coefficient
	Clean	Rain	Del	Clean	Rain	Del
0	0.07901	0.07656	-3.10%	0.01988	0.02515	26.51%
4	0.49842	0.48888	-1.91%	0.02597	0.03124	20.29%
8	0.87999	0.86370	-1.85%	0.04479	0.05028	12.26%
12	1.17984	1.14808	-2.69%	0.07792	0.08512	9.24%
16	1.24857	1.08936	-12.75%	0.13959	0.16701	19.64%
20	0.95476	0.90432	-5.28%	0.26550	0.28547	7.52%