Inertial Subrange Optimization in Eddy Dissipation Rate Estimation and Aircraft-Dependent Bumpiness Estimation
Atmospheric turbulence leads to aircraft bumpiness. In current vertical wind-based eddy dissipation rate (EDR) estimation algorithms based on flight data, the inertial subrange is determined empirically. In application, specific aircraft bumpiness can only be described by an EDR indicator. In this s...
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MDPI AG
2025-03-01
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| author | Zhenxing Gao Qilin Zhang Kai Qi |
| author_facet | Zhenxing Gao Qilin Zhang Kai Qi |
| author_sort | Zhenxing Gao |
| collection | DOAJ |
| description | Atmospheric turbulence leads to aircraft bumpiness. In current vertical wind-based eddy dissipation rate (EDR) estimation algorithms based on flight data, the inertial subrange is determined empirically. In application, specific aircraft bumpiness can only be described by an EDR indicator. In this study, the objective turbulence severity and aircraft-related bumpiness estimation were explored with an optimized inertial subrange. To obtain the inertial subrange, the minimum series length to estimate EDR was determined under different flight data sampling rate. In addition, the basic series length to estimate the inertial subrange was determined according to Blackman–Tukey spectra estimation theory. In aircraft-dependent bumpiness estimation, the unsteady vortex lattice method (UVLM) was designed to obtain an accurate aircraft acceleration response to turbulence. An in situ aircraft bumpiness estimation and bumpiness prediction method were further proposed. Simulation and experiments on real flight data testified the optimized aircraft-independent EDR estimation and aircraft-dependent bumpiness estimation successively. This study can be further applied to estimate the turbulence severity on a particular airway, while the bumpiness of specific aircraft can be predicted. |
| format | Article |
| id | doaj-art-2eee6a1c3ed54e98807e8d9ee27323f6 |
| institution | OA Journals |
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| language | English |
| publishDate | 2025-03-01 |
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| series | Aerospace |
| spelling | doaj-art-2eee6a1c3ed54e98807e8d9ee27323f62025-08-20T02:17:14ZengMDPI AGAerospace2226-43102025-03-0112429310.3390/aerospace12040293Inertial Subrange Optimization in Eddy Dissipation Rate Estimation and Aircraft-Dependent Bumpiness EstimationZhenxing Gao0Qilin Zhang1Kai Qi2College of General Aviation and flight, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, ChinaCollege of Civil Aviation, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, ChinaCollege of General Aviation and flight, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, ChinaAtmospheric turbulence leads to aircraft bumpiness. In current vertical wind-based eddy dissipation rate (EDR) estimation algorithms based on flight data, the inertial subrange is determined empirically. In application, specific aircraft bumpiness can only be described by an EDR indicator. In this study, the objective turbulence severity and aircraft-related bumpiness estimation were explored with an optimized inertial subrange. To obtain the inertial subrange, the minimum series length to estimate EDR was determined under different flight data sampling rate. In addition, the basic series length to estimate the inertial subrange was determined according to Blackman–Tukey spectra estimation theory. In aircraft-dependent bumpiness estimation, the unsteady vortex lattice method (UVLM) was designed to obtain an accurate aircraft acceleration response to turbulence. An in situ aircraft bumpiness estimation and bumpiness prediction method were further proposed. Simulation and experiments on real flight data testified the optimized aircraft-independent EDR estimation and aircraft-dependent bumpiness estimation successively. This study can be further applied to estimate the turbulence severity on a particular airway, while the bumpiness of specific aircraft can be predicted.https://www.mdpi.com/2226-4310/12/4/293turbulenceeddy dissipation rateinertial subrangeacceleration responselinear potential theory |
| spellingShingle | Zhenxing Gao Qilin Zhang Kai Qi Inertial Subrange Optimization in Eddy Dissipation Rate Estimation and Aircraft-Dependent Bumpiness Estimation Aerospace turbulence eddy dissipation rate inertial subrange acceleration response linear potential theory |
| title | Inertial Subrange Optimization in Eddy Dissipation Rate Estimation and Aircraft-Dependent Bumpiness Estimation |
| title_full | Inertial Subrange Optimization in Eddy Dissipation Rate Estimation and Aircraft-Dependent Bumpiness Estimation |
| title_fullStr | Inertial Subrange Optimization in Eddy Dissipation Rate Estimation and Aircraft-Dependent Bumpiness Estimation |
| title_full_unstemmed | Inertial Subrange Optimization in Eddy Dissipation Rate Estimation and Aircraft-Dependent Bumpiness Estimation |
| title_short | Inertial Subrange Optimization in Eddy Dissipation Rate Estimation and Aircraft-Dependent Bumpiness Estimation |
| title_sort | inertial subrange optimization in eddy dissipation rate estimation and aircraft dependent bumpiness estimation |
| topic | turbulence eddy dissipation rate inertial subrange acceleration response linear potential theory |
| url | https://www.mdpi.com/2226-4310/12/4/293 |
| work_keys_str_mv | AT zhenxinggao inertialsubrangeoptimizationineddydissipationrateestimationandaircraftdependentbumpinessestimation AT qilinzhang inertialsubrangeoptimizationineddydissipationrateestimationandaircraftdependentbumpinessestimation AT kaiqi inertialsubrangeoptimizationineddydissipationrateestimationandaircraftdependentbumpinessestimation |