This study presents new developments required for fixed-wing MAVs, aiming to increase their aerodynamic performance and maneuverability. Since these small vehicles have been restricted by the weight and space requirement to mount batteries inside them, the flight endurance and performance have been sharply decreased. To overcome on the weaknesses, flow control techniques such as passive and active controls would be effective on the small flying vehicles. Recently, a passive flow control solution inspired from the pectoral flippers of humpback whales has been already used which could delay or mitigate out aerodynamic stall. However, an inverse behavior has been found in pre-stall conditions with dropping down the lift coefficients due to the formation of laminar separation bubble (LSB) in the trough section of wing. In the current investigation, in an attempt to retrieve the lift-generation capabilities of the modified wing at pre-stall angles of attack, an active flow control method is designed and numerically simulated, making use of morphing plate specially on the area of the LSB position. The resulting hybrid flow control system has proved its effectiveness, exhibiting complete suppression of the LSB at pre-stall, a delay in the occurrence of stall, and generalized lift enhancements irrespectively of the regime of operation.

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