Study of quadcopter propellers at low Reynolds number

During horizontal flight the propellers of quadcopter is working in oblique flow conditions. This case not studied enough for fixed pitch propellers especially at low Reynolds numbers, which are implemented on propellers of small quadcopters. The experimental investigation of characteristics of three-blade propeller for quadcopter in different conditions (including oblique blowing) was carried out. The effect of oblique flow mode on the dimensionless characteristics of the propeller was investigated. The unsteady component of the force generated by the propeller was estimated on the basis of numerical simulation.