Research of Design Technology of Large Opening Lifting Photo-electric Pod

Abstract

The fuselage large opening has the problems of rapid change of structural stiffness and deformation discontinuity, which makes the modification design of fuselage with large opening become the important and difficult points.Taking a foreign aircraft as an example, the design and research of opening reinforcement area are carried out, a single element comparison method is established to verify the structural strength of the lifting photo-electric pod.The idea of load design is combed, the photoelectric pod and lifting mechanism are designed autonomously, and the stress of each working condition before and after refitting is compared.The results show that under the action of airtight pressure, section load and photo-electricity pod load of fuselage, the modified structure can realize the lifting function, the load calculation method and magnitude of photo-electric pod are reasonable and credible, and the fuselage structure meets the strength design requirements.The single element comparison method used as the evaluation index of strength conformity can guide the modification design of same type aircraft.

Keywords

• photo-electric pod
• large opening lifting mechanism
• single element comparison method
• air tight pres-sure
• fuselage section load