|
| Static Strength Analysis and Full Scale Test of a Certain Type Aircraft Radome |
| Received:July 09, 2017 Revised:December 15, 2017 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/ issn.1672-9242.2017.12.011 |
| KeyWord:a certain type aircraft radome finite element analysis whole scale test static strength test |
| Author | Institution |
| YU Hai-jiao |
Beijing Aeronautical Technology Research Center, Beijing , China |
| QIAN Li-min |
AVIC Aircraft Co., Ltd., Xi'an , China |
| WU Zhi-chao |
Beijing Aeronautical Technology Research Center, Beijing , China |
| WANG Yu-ya |
Beijing Aeronautical Technology Research Center, Beijing , China |
| CHEN Dong-liang |
AVIC Aircraft Co., Ltd., Xi'an , China |
| CHEN Qun-zhi |
Beijing Aeronautical Technology Research Center, Beijing , China |
|
| Hits: |
| Download times: |
| Abstract: |
| Objective To evaluate the static strength of full-scale radome for a certain type aircraft and verify the accuracy of the calculation model. Methods The finite element analysis and static strength test were combined to study, test and verify the bearing capacity of full-scale radome of a certain type aircraft. A finite element module was established based on structure characteristics and load distribution of the radome to calculate stress and strain, check the strain strength and gain stress and stain contours of the radome. On this basis, load-carrying capacity of the radome was tested under the most series load cases. The general scheme of the test were designed and optimized in advance. As needed, “vector” loading technique and soft & hard-loading manner were adopted to apply the tensile load and pressure load on the radome, which made sure that the load of each point and the normal of its location surface were in the same direction. That means, the load-carrying conditions were consistent with the actual ones. Results The stress of the radome was low, the carrying capacity was high; the measured stress results was deviated from the theoretical calculation result, but the stress distribution was reasonable, and the theoretical analysis and calculation results had almost the same trend; static test results show that radar cover and fuselage connection structure could meet the requirements of static strength design. Conclusion The measured strain data during radome static strength test coincide quite well with the finite element calculation results; and the radome and its connecting structure with the frame meet the strength design requirements. |
| Close |
|
|
|