Manufacturing and verification research for engine compartment rear structure based on AC729RTM polyimide composites

ZHANG Qingmao; JIN Dongsheng; GAN jian; ZHANG Peng; BAO Jianwen

doi:10.13801/j.cnki.fhclxb.20210816.002

Volume 39 Issue 6

Jun. 2022

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ZHANG Qingmao, JIN Dongsheng, GAN jian, et al. Manufacturing and verification research for engine compartment rear structure based on AC729RTM polyimide composites[J]. Acta Materiae Compositae Sinica, 2022, 39(6): 2631-2638. doi: 10.13801/j.cnki.fhclxb.20210816.002

Citation:

ZHANG Qingmao, JIN Dongsheng, GAN jian, et al. Manufacturing and verification research for engine compartment rear structure based on AC729RTM polyimide composites[J]. Acta Materiae Compositae Sinica, 2022, 39(6): 2631-2638. doi: 10.13801/j.cnki.fhclxb.20210816.002

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Manufacturing and verification research for engine compartment rear structure based on AC729RTM polyimide composites

doi: 10.13801/j.cnki.fhclxb.20210816.002

1.
Chengdu Aircraft Design & Research Institute, Chengdu 610041, China
2.
AVIC Composite Technology Center, Beijing 100088, China

Received Date: 2021-05-18
Accepted Date: 2021-07-23
Rev Recd Date: 2021-06-25

Available Online: 2021-08-16

Publish Date: 2022-06-01

Abstract

Abstract

In view of the structural deformation, weight and high-temperature requirements in the application of titanium engine compartment rear structure of a certain aircraft, composite structural design was carried out instead of titanium alloy for aircraft engine compartment rear structure, taking the AC729RTM polyimide composite with temperature resistance of 350℃ as design material. The finite element (FE) model of composite engine compartment rear structure was generated to perform parameter analysis and reasonable structural design parameters were obtained. The composite engine compartment rear structure was fabricated by resin transfer molding process (RTM). Finally, verification and evaluation were carried out from static strength test, structural deformation and weight. The results show that the internal quality and appearance of polyimide composite engine compartment rear structure are in good condition except for pores of small areas (porosity<2%) through non-destructive inspection. There are no obvious damages in engine compartment rear structure except for debonding of small areas through verification of static strength test, and satisfied the requirement of room temperament strength. The shape deviation of composite engine compartment rear structure is controlled in –0.808-0.664 mm and is better than titanium alloy structural. Compared with titanium alloy structural, the mass is reduced by 27.5%, achieving good benefits.
- AC729RTM,
- polyimide,
- composite,
- engine compartment rear structural,
- finite element analysis,
- verification and evaluation
Long Abstrsct
Innovation Points

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References(24)

References

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