1. Rotorcraft Aeromechanics;Johnson,2013
2. Aerodynamic shape of the wing tips;Hoerner,1949
3. Experimental investigation of model variable Geometry and ogee tip rotors;Landgrebe,1974
4. Influence of tip shape, chord, blade number, and airfoil on advanced rotor performance;McVeigh;J. Am. Helicopter Soc.,1984
5. Special vortices at a helicopter rotor blade;Müller;J. Am. Helicopter Soc.,1990