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DTIC ADA119974: Response Sensitivity of Typical Aircraft Jet Engine... |
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by Defense Technical Information Center |
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The response sensitivity of jet engine fan blade-like |
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structures to the details of impact loading were studied. |
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In particular, impacts of birds and ice on jet engines |
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are difficult to model analytically. This report provides |
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guidance in determining the spatical and temporal loading |
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parameters that must be most accurately modeled in a |
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coupled load-response analysis. A finite element model of |
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a cantilever plate was subjected to various spatial and |
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temporal loading details to determine important |
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parameters. The cantilever plate was 7.62 cm (3-inches) |
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by 24.46 cm (9.63-inches) by 3.81 mm (0.15-inches) thick. |
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Applied loads simulated the impact load levels similar to |
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a 85 g (3 ounce) bird impacting at 244 m/sec (800 |
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ft/sec). The plate response was monitored by observing |
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deflected shapes at several increments of time during and |
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after impact. The results show that the cantilever plate |
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and presumably a jet engine fan blade are very sensitive |
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to the level of momentum transfer. The detailed spatial |
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and temporal loads that most affect momentum transfer |
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were found to be of particular importance to the |
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structure response. (Author) |
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Date Published: 2018-01-07 04:57:22 |
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Identifier: DTIC_ADA119974 |
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Item Size: 25285254 |
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Language: english |
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Media Type: texts |
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# Topics |
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DTIC Archive; Bauer,David P ; GENERAL... |
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# Collections |
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dticarchive |
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additional_collections |
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# Uploaded by |
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@chris85 |
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