An engine inlet of an aircraft comprising; a flexible inlet , wherein the flexible inlet is formed of a deformable material; wherein the flexible inlet comprises an outer surface , an inner surface , and plurality of edges ; whereas the plurality of edges are attachable at least partly to a fuselage skin of the aircraft and at least partly to an engine air intake duct of the aircraft ; at least one mechanism ; a processing unit , wherein the processing unit is configured to control the mechanism ; and wherein the mechanism is configured to change at least a shape of the flexible inlet ; wherein the mechanism is characterized by comprising: at least one curved head , wherein the head is in contact with the inner surface of the flexible inlet and wherein the head comprises a smooth surface; at least one arm , wherein the arm further comprises at least a first end and a second end , wherein the first end of the arm is connected pivotally to the head of the mechanism ; at least one positioning system , wherein the positioning system further includes at least one control joint and a base ; wherein the base of the positioning system is configured to be fixed to at least a structure of the aircraft ; wherein the control joint of the positioning system is connected to the second end of the arm ; wherein the control joint is configured to receive a signal from the processing unit , wherein the signal from the processing unit is a required position of the arm . a flexible inlet , wherein the flexible inlet is formed of a deformable material; wherein the flexible inlet comprises an outer surface , an inner surface , and plurality of edges ; whereas the plurality of edges are attachable at least partly to a fuselage skin of the aircraft and at least partly to an engine air intake duct of the aircraft ; at least one mechanism ; a processing unit , wherein the processing unit is configured to control the mechanism ; and wherein the mechanism is configured to change at least a shape of the flexible inlet ; wherein the mechanism is characterized by comprising: at least one curved head , wherein the head is in contact with the inner surface of the flexible inlet and wherein the head comprises a smooth surface; at least one arm , wherein the arm further comprises at least a first end and a second end , wherein the first end of the arm is connected pivotally to the head of the mechanism ; at least one positioning system , wherein the positioning system further includes at least one control joint and a base ; wherein the base of the positioning system is configured to be fixed to at least a structure of the aircraft ; wherein the control joint of the positioning system is connected to the second end of the arm ; wherein the control joint is configured to receive a signal from the processing unit , wherein the signal from the processing unit is a required position of the arm . at least one curved head , wherein the head is in contact with the inner surface of the flexible inlet and wherein the head comprises a smooth surface; at least one arm , wherein the arm further comprises at least a first end and a second end , wherein the first end of the arm is connected pivotally to the head of the mechanism ; at least one positioning system , wherein the positioning system further includes at least one control joint and a base ; wherein the base of the positioning system is configured to be fixed to at least a structure of the aircraft ; wherein the control joint of the positioning system is connected to the second end of the arm ; wherein the control joint is configured to receive a signal from the processing unit , wherein the signal from the processing unit is a required position of the arm . <EOS>