Research on the Influence of External Pods on the Aerodynamic Characteristics of a Light General Aircraft

While a twin engines light general aircraft modification is completed,the aerodynamic characteristics of this aircraft is changed,and it will influence the flight performance and control stability.As an example,the aerodynamic characteristics of a twin engines light general aircraft,with a photoelectric pod at the nose and a SAR pod at the belly,are calculated using CFD,then the influence of the fight performance after modification is calculated and the control stability is analyzed.Results show that,after the modification,the flight performances,such as take off and landing distance,rate of climb,range and endurance,are reduced but less effect to the control stability.The research can be the guidance for the aircraft to mount the pods,meanwhile it is of a certain reference value for airworthiness certification and flight test.