1. Effect of higher harmonic control on helicopter rotor blade-vortex interaction noise: prediction and initial validation;Beaumier,1994
2. Advances in the development of an intelligent helicopter rotor employing smart trailing edge flaps;Ben Zeev,1996
3. Development of a smart rotor with a trailing edge flap activated by a bending-torsion coupled composite beam;Bernhard,1996
4. Full-scale measurements of blade-vortex interaction noise;Boxwell;J. Amer. Helicopter Soc.,1982
5. Helicopter noise prediction: the current status and future direction;Brentner,1992