Integrated manufacturing technology for composite rudder of large⁃sized unmanned aerial vehicle

doi:10.19491/j.issn.1001-9278.2024.08.012

Abstract

Abstract:

According to the difficulty on forming composite rudder of large⁃sized unmanned aerial vehicle integrally， a metal combined female mold and a detachable core mold that made of “silicone rubber + aluminum blocks” were designed. Hand laying⁃up and oven curing processes were used to manufacture the rudder with good internal and external appearance， stable forming process， easy manufacturing， and low cost. The results indicated the proposed method is effective and efficient.

Key words: unmanned aerial vehicle, composite material, rudder, integral manufacturing, integral forming, silicone rubber

CLC Number:

TQ320.6

GE Jiarong, GUAN Guoying, YAO Zijia, TONG Fangqiang, WANG Boqun. Integrated manufacturing technology for composite rudder of large⁃sized unmanned aerial vehicle[J]. China Plastics, 2024, 38(8): 76-80.

Figures/Tables 14

Fig.1. Schematic diagram of the rudder structure

Fig.2. Schematic diagram of thermal expansion molding

Fig.3. Schematic diagram of the rudder forming mold

材料牌号

名称

拉伸强度/

MPa

屈服强度/

MPa

弹性模量/

GPa

延伸率/

熔点/

℃

密度/k

g·m^-3

热导率/

W• （m•K）^-1

线膨胀系数/

×10^-6℃^-1

45^#

Tab.1. Properties of the mold materials

Fig.4. Master mold of the core mold

Fig.5. Detachable core mold

Fig.6. Manufacturing process diagram of the rudder

Fig.7. Laying⁃up of the lower female mold

Fig.8. Laying⁃up of the core mold

Fig.9. Assemble core mold to the lower female mold

Fig.10. Diagram of the twist strip compensation

Fig.11. Laying⁃up of the core mold surface

Fig.12. Closing of the upper and lower female mold

Fig.13. The rudder after demolding

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