2.9.5 C.30A Flapwise Bending Analysis. 173 2.9.6 C.30A Chordwise Bending Analysis.… 182 2.9.7 C.30A Torsional Bending Analysis.… 186 2.9.8 C.30A Total Blade Stresses gg8年有gg。8g”有。g。g8。有g8sg有车gg。gg 188 2.9.9 Closing Remarks 1902.10 VIBRATION 193 2.10.1 C.30 Vibration Background........ 197 2.10.2 C.30 Vibratory Hub Loads 199 2.10.3 C.30 Once-per-Revolution Vibration ,*年，，：。。，。，，年年+4+年4，，。∠