Modeling of LTO approach time-in-mode values in MATLAB using the generalized extreme value distribution
The landing and take-off (LTO) cycle, which is used to calculate emissions of aircraft below 3 000 feet, consists of four operating modes, each of which has a standardized time duration or time-in-mode (TIM). In this paper, we model TIM values of the Approach operating mode for two aircraft types (...
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Czech Technical University in Prague
2025-06-01
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| Series: | Acta Polytechnica CTU Proceedings |
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| Online Access: | https://ojs.cvut.cz/ojs/index.php/APP/article/view/10622 |
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| author | Bo Stloukal Ivan Nagy |
| author_facet | Bo Stloukal Ivan Nagy |
| author_sort | Bo Stloukal |
| collection | DOAJ |
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The landing and take-off (LTO) cycle, which is used to calculate emissions of aircraft below 3 000 feet, consists of four operating modes, each of which has a standardized time duration or time-in-mode (TIM). In this paper, we model TIM values of the Approach operating mode for two aircraft types (Boeing 737-800 and Airbus A320) arriving on Runway 24 at Prague Václav Havel Airport using the generalized extreme value (GEV) distribution. Predictions of the TIM values are made using the models, and the performance of each model is evaluated. The results show that for both aircraft types, the predicted TIM values lead to total emissions estimates deviating on average by 1 to 2 percent from estimates made using the real TIM values, showing good model performance. The presented approach is also shown to be beneficial in comparison with using the standard TIM value (240 s), highlighting the feasibility of further research in this area as one of the avenues of improving the LTO cycle methodology.
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| format | Article |
| id | doaj-art-3b79114e8c5a4d0c89730c8ef55e48e5 |
| institution | DOAJ |
| issn | 2336-5382 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | Czech Technical University in Prague |
| record_format | Article |
| series | Acta Polytechnica CTU Proceedings |
| spelling | doaj-art-3b79114e8c5a4d0c89730c8ef55e48e52025-08-20T03:16:31ZengCzech Technical University in PragueActa Polytechnica CTU Proceedings2336-53822025-06-015210.14311/APP.2025.52.0122Modeling of LTO approach time-in-mode values in MATLAB using the generalized extreme value distributionBo Stloukal0Ivan Nagy1Czech Technical University in Prague, Faculty of Transportation Sciences, Department of Air Transport, Horská 3, 128 03 Prague 2, Czech RepublicCzech Technical University in Prague, Faculty of Transportation Sciences, Department of Applied Mathematics, Na Florenci 25, 110 00 Prague 1, Czech Republic The landing and take-off (LTO) cycle, which is used to calculate emissions of aircraft below 3 000 feet, consists of four operating modes, each of which has a standardized time duration or time-in-mode (TIM). In this paper, we model TIM values of the Approach operating mode for two aircraft types (Boeing 737-800 and Airbus A320) arriving on Runway 24 at Prague Václav Havel Airport using the generalized extreme value (GEV) distribution. Predictions of the TIM values are made using the models, and the performance of each model is evaluated. The results show that for both aircraft types, the predicted TIM values lead to total emissions estimates deviating on average by 1 to 2 percent from estimates made using the real TIM values, showing good model performance. The presented approach is also shown to be beneficial in comparison with using the standard TIM value (240 s), highlighting the feasibility of further research in this area as one of the avenues of improving the LTO cycle methodology. https://ojs.cvut.cz/ojs/index.php/APP/article/view/10622aircraftemissionsapproachLTO cycletime-in-modegeneralized extreme value distribution |
| spellingShingle | Bo Stloukal Ivan Nagy Modeling of LTO approach time-in-mode values in MATLAB using the generalized extreme value distribution Acta Polytechnica CTU Proceedings aircraft emissions approach LTO cycle time-in-mode generalized extreme value distribution |
| title | Modeling of LTO approach time-in-mode values in MATLAB using the generalized extreme value distribution |
| title_full | Modeling of LTO approach time-in-mode values in MATLAB using the generalized extreme value distribution |
| title_fullStr | Modeling of LTO approach time-in-mode values in MATLAB using the generalized extreme value distribution |
| title_full_unstemmed | Modeling of LTO approach time-in-mode values in MATLAB using the generalized extreme value distribution |
| title_short | Modeling of LTO approach time-in-mode values in MATLAB using the generalized extreme value distribution |
| title_sort | modeling of lto approach time in mode values in matlab using the generalized extreme value distribution |
| topic | aircraft emissions approach LTO cycle time-in-mode generalized extreme value distribution |
| url | https://ojs.cvut.cz/ojs/index.php/APP/article/view/10622 |
| work_keys_str_mv | AT bostloukal modelingofltoapproachtimeinmodevaluesinmatlabusingthegeneralizedextremevaluedistribution AT ivannagy modelingofltoapproachtimeinmodevaluesinmatlabusingthegeneralizedextremevaluedistribution |