Full-scale-tunnel Performance Tests of the PV-2 Helicopter Rotor
Response of helicopter rotors to periodic forces
Static-Thrust Tests of Six Rotor-Blade Designs on a Helicopter in the Langley Full-Scale Tunnel
Wind-Tunnel Tests of a Portion of a PV-2 Helicopter Rotor Blade
Aerodynamic Characteristics of Four NACA Airfoil Sections Designed for Helicopter Rotor Blades
Flight Tests of a Helicopter in Autorotation, Including a Comparison with Theory
Effect of Blade Stalling on the Efficiency of a Helicopter Rotor as Measured in Flight
Full-scale Investigation of the Blade Motion of the PV-2 Helicopter Rotor
Effect of rotor-blade twist and plan-form taper on helicopter hovering performance