Junzi Sun, Ph.D.

Flight Performance, Prediction, and Optimizations

Research on aircraft performance, particularly using open models and open data, is integral to advancing the aviation sector. My research focuses on developing and improving OpenAP and associated open tools that supports the study of trajectory optimization and predictions.

Highlights

OpenAP: Open Aircraft Performance Model
This project focuses on the development of OpenAP, a comprehensive Open Aircraft Performance and Emission Model. OpenAP aims to provide a fully open-source platform for modeling critical aircraft performance metrics, including kinematic properties, thrust, drag, and fuel flow rates. Built on the principle of transparency and accessibility, OpenAP is founded on open data and designed to advance air transport research. The repository houses a rich collection of OpenAP databases, along with a Python implementation that streamlines data access and facilitates complex aircraft performance computations. Overall, OpenAP serves as a transparent and accessible tool for fostering rigorous and collaborative research in air transport.
OpenAP.top: Open Flight Trajectory Optimizer
Presenting a fully open-source trajectory optimizer, providing researchers with seamless access to the sophisticated yet efficient direct collocation optimization approach. The optimizer is capable of adjusting to meteorological conditions and can be utilized for distinct flight phases independently or in combination. It encompasses conventional fuel and cost index objectives, as well as climate metrics-based objectives utilizing global warming or temperature potential.

Related publications

  1. OpenAP. top: Open Flight Trajectory Optimization for Air Transport and Sustainability Research
    Journal 2022
    DOI: 10.3390/aerospace9070383
    Sun, Junzi
    Aerospace
    Copy Sun, J. (2022). OpenAP. top: Open Flight Trajectory Optimization for Air Transport and Sustainability Research. Aerospace, 9(7), 383. https://doi.org/10.3390/aerospace9070383
    Copy
    @article{sun2022top,
      title = {OpenAP. top: Open Flight Trajectory Optimization for Air Transport and Sustainability Research},
      author = {Sun, Junzi},
      journal = {Aerospace},
      volume = {9},
      number = {7},
      pages = {383},
      year = {2022},
      month = jul,
      publisher = {Multidisciplinary Digital Publishing Institute},
      link = {https://doi.org/10.3390/aerospace9070383},
      doi = {10.3390/aerospace9070383},
      tag = {perf, sus}
    }
  2. Aircraft Trajectory Prediction using ADS-B Data
    Conference 2022
    YANG, X ; Sun, Junzi ; and Rajan, RT
    In 42nd WIC Symposium on Information Theory and Signal Processing in the Benelux (SITB 2022)
    Copy YANG, X., Sun, J., & Rajan, R. T. (2022, May). Aircraft Trajectory Prediction using ADS-B Data. 42nd WIC Symposium on Information Theory and Signal Processing in the Benelux (SITB 2022).
    Copy
    @inproceedings{yang2022aircraft,
      title = {Aircraft Trajectory Prediction using ADS-B Data},
      author = {YANG, X and Sun, Junzi and Rajan, RT},
      booktitle = {42nd WIC Symposium on Information Theory and Signal Processing in the Benelux (SITB 2022)},
      year = {2022},
      month = may,
      link = {https://research.tudelft.nl/en/publications/aircraft-trajectory-prediction-using-ads-b-data},
      tag = {perf}
    }
  3. OpenAP: An open-source aircraft performance model for air transportation studies and simulations
    Journal 2020
    DOI: 10.3390/aerospace7080104
    Sun, Junzi ; Hoekstra, Jacco ; and Ellerbroek, Joost
    Aerospace
    Copy Sun, J., Hoekstra, J., & Ellerbroek, J. (2020). OpenAP: An open-source aircraft performance model for air transportation studies and simulations. Aerospace, 7(8), 104. https://doi.org/10.3390/aerospace7080104
    Copy
    @article{sun2020openap,
      title = {OpenAP: An open-source aircraft performance model for air transportation studies and simulations},
      author = {Sun, Junzi and Hoekstra, Jacco and Ellerbroek, Joost},
      journal = {Aerospace},
      volume = {7},
      number = {8},
      pages = {104},
      year = {2020},
      month = jul,
      publisher = {Multidisciplinary Digital Publishing Institute},
      link = {https://doi.org/10.3390/aerospace7080104},
      doi = {10.3390/aerospace7080104},
      tag = {perf}
    }
  4. Estimating aircraft drag polar using open flight surveillance data and a stochastic total energy model
    Journal 2020
    DOI: 10.1016/j.trc.2020.01.026
    Sun, Junzi ; Hoekstra, Jacco ; and Ellerbroek, Joost
    Transportation Research Part C: Emerging Technologies
    Copy Sun, J., Hoekstra, J., & Ellerbroek, J. (2020). Estimating aircraft drag polar using open flight surveillance data and a stochastic total energy model. Transportation Research Part C: Emerging Technologies, 114, 391–404. https://doi.org/10.1016/j.trc.2020.01.026
    Copy
    @article{sun2020estimating,
      title = {Estimating aircraft drag polar using open flight surveillance data and a stochastic total energy model},
      author = {Sun, Junzi and Hoekstra, Jacco and Ellerbroek, Joost},
      journal = {Transportation Research Part C: Emerging Technologies},
      volume = {114},
      pages = {391--404},
      year = {2020},
      month = may,
      publisher = {Elsevier},
      link = {https://research.tudelft.nl/files/71038050/published_OpenAP_drag_polar.pdf},
      doi = {10.1016/j.trc.2020.01.026},
      tag = {ai, perf}
    }
  5. Reconstructing Aircraft Turn Manoeuvres for Trajectory Analyses Using ADS-B Data
    Conference 2019
    Sun, Junzi ; Ellerbroek, Joost ; and Hoekstra, Jacco
    In Proceedings of the 9th SESAR Innovation Days, Athens, Greece
    Copy Sun, J., Ellerbroek, J., & Hoekstra, J. (2019). Reconstructing Aircraft Turn Manoeuvres for Trajectory Analyses Using ADS-B Data. Proceedings of the 9th SESAR Innovation Days, Athens, Greece, 2–5.
    Copy
    @inproceedings{sun2019reconstructing,
      title = {Reconstructing Aircraft Turn Manoeuvres for Trajectory Analyses Using ADS-B Data},
      author = {Sun, Junzi and Ellerbroek, Joost and Hoekstra, Jacco},
      booktitle = {Proceedings of the 9th SESAR Innovation Days, Athens, Greece},
      pages = {2--5},
      year = {2019},
      month = dec,
      link = {https://www.sesarju.eu/sites/default/files/documents/sid/2019/papers/SIDs_2019_paper_57.pdf},
      tag = {perf}
    }
  6. Particle filter for aircraft mass estimation and uncertainty modeling
    Journal 2019
    DOI: 10.1016/j.trc.2019.05.030
    Sun, Junzi ; Blom, Henk AP ; Ellerbroek, Joost ; and Hoekstra, Jacco
    Transportation Research Part C: Emerging Technologies
    Copy Sun, J., Blom, H. A. P., Ellerbroek, J., & Hoekstra, J. (2019). Particle filter for aircraft mass estimation and uncertainty modeling. Transportation Research Part C: Emerging Technologies, 105, 145–162. https://doi.org/10.1016/j.trc.2019.05.030
    Copy
    @article{sun2019particle,
      title = {Particle filter for aircraft mass estimation and uncertainty modeling},
      author = {Sun, Junzi and Blom, Henk AP and Ellerbroek, Joost and Hoekstra, Jacco},
      journal = {Transportation Research Part C: Emerging Technologies},
      volume = {105},
      pages = {145--162},
      year = {2019},
      month = aug,
      publisher = {Elsevier},
      doi = {10.1016/j.trc.2019.05.030},
      link = {https://research.tudelft.nl/files/54440038/1_s2.0_S0968090X18313524_main.pdf},
      tag = {perf}
    }
  7. WRAP: An open-source kinematic aircraft performance model
    Journal 2019
    DOI: 10.1016/j.trc.2018.11.009
    Sun, Junzi ; Ellerbroek, Joost ; and Hoekstra, Jacco
    Transportation Research Part C: Emerging Technologies
    Copy Sun, J., Ellerbroek, J., & Hoekstra, J. (2019). WRAP: An open-source kinematic aircraft performance model. Transportation Research Part C: Emerging Technologies, 98, 118–138. https://doi.org/10.1016/j.trc.2018.11.009
    Copy
    @article{sun2019wrap,
      title = {WRAP: An open-source kinematic aircraft performance model},
      author = {Sun, Junzi and Ellerbroek, Joost and Hoekstra, Jacco},
      journal = {Transportation Research Part C: Emerging Technologies},
      volume = {98},
      pages = {118--138},
      year = {2019},
      month = jan,
      publisher = {Elsevier},
      doi = {10.1016/j.trc.2018.11.009},
      link = {https://research.tudelft.nl/files/52638054/1_s2.0_S0968090X18306089_main.pdf},
      tag = {perf}
    }
  8. Aircraft Drag Polar Estimation Based on a Stochastic Hierarchical Model
    Conference 2018
    Sun, Junzi ; Hoekstra, Jacco ; and Ellerbroek, Joost
    In 8th International Conference on Research in Air Transportation
    Copy Sun, J., Hoekstra, J., & Ellerbroek, J. (2018, June). Aircraft Drag Polar Estimation Based on a Stochastic Hierarchical Model. 8th International Conference on Research in Air Transportation.
    Copy
    @inproceedings{sun2018drag,
      title = {Aircraft Drag Polar Estimation Based on a Stochastic Hierarchical Model},
      author = {Sun, Junzi and Hoekstra, Jacco and Ellerbroek, Joost},
      booktitle = {8th International Conference on Research in Air Transportation},
      year = {2018},
      month = jun,
      link = {https://www.sesarju.eu/sites/default/files/documents/sid/2018/papers/SIDs_2018_paper_75.pdf},
      tag = {perf}
    }
  9. Aircraft Mass and Thrust Estimation Using Recursive Bayesian Method
    Conference 2018
    Sun, Junzi ; Blom, Henk A P ; Ellerbroek, Joost ; and Hoekstra, Jacco
    In 8th International Conference on Research in Air Transportation
    Copy Sun, J., Blom, H. A. P., Ellerbroek, J., & Hoekstra, J. (2018, June). Aircraft Mass and Thrust Estimation Using Recursive Bayesian Method. 8th International Conference on Research in Air Transportation.
    Copy
    @inproceedings{sun2018smc,
      title = {Aircraft Mass and Thrust Estimation Using Recursive Bayesian Method},
      author = {Sun, Junzi and Blom, Henk A P and Ellerbroek, Joost and Hoekstra, Jacco},
      booktitle = {8th International Conference on Research in Air Transportation},
      year = {2018},
      month = jun,
      link = {https://research.tudelft.nl/files/103003225/ICRAT_2018_paper_19_1_.pdf},
      tag = {perf}
    }
  10. Modeling Aircraft Performance Parameters with Open ADS-B Data
    Conference 2017
    Sun, Junzi ; Ellerbroek, Joost ; and Hoekstra, Jacco
    In 12th USA/Europe Air Traffic Management Research and Development Seminar
    Copy Sun, J., Ellerbroek, J., & Hoekstra, J. (2017, June). Modeling Aircraft Performance Parameters with Open ADS-B Data. 12th USA/Europe Air Traffic Management Research and Development Seminar.
    Copy
    @inproceedings{sun2017modeling,
      title = {Modeling Aircraft Performance Parameters with Open ADS-B Data},
      author = {Sun, Junzi and Ellerbroek, Joost and Hoekstra, Jacco},
      booktitle = {12th USA/Europe Air Traffic Management Research and Development Seminar},
      year = {2017},
      month = jun,
      link = {https://research.tudelft.nl/files/31444997/12th_ATM_RD_Seminar_paper_66.pdf},
      tag = {perf}
    }


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