Citation:
V.M. Moraris, N.J.Lawson, K.P.Garry, Aerodynamic and performance characteristics of a passive leading edge Kruger
flap at low Reynolds numbers, The Aeronautical Journal, Volume 116 (1181), 2012, Pages 759-769.
Abstract:
An experimental and numerical study was performed on a Clark Y aerofoil with a
10% chord leading edge Kruger flap to examine its aerodynamic performance at
Reynolds numbers of 0.6 × 106, 1 × 106, and 1.6 × 106, to help to identify the
forces and moments acting on a basic configuration. A detailed comparison of the
numerical and experimental data is presented in this paper. The leading edge
flap was effective at high angles of attack with an increase in CL of up to 18%
over a conventional no flap configuration and delayed separation by up to 3°.
The moments around the Kruger flap rotation point were calculated from the
numerical analysis as an initial stage in the design of a UAV passive flap
system and they are also presented in the pa
