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Welcome to the TU Delft Airborne Wind Energy group on GitHub!

Here you can find the open-source code and data behind our research. Most of the work is linked to publications that can be found through the TU Delft Repository.

The TU Delft AWE group in 2024, photo by F. Martins

Open-source toolchain for soft-kite systems

Our tools for soft-wing (leading-edge inflatable) kite power systems work together across three levels: the system (cost and energy yield), the kite (aerodynamics, structure and flight paths) and its operation (simulation, estimation and early warning). The tools exchange system definitions and data through the common awesIO standard.

Soft-kite toolchain: TEF (AWESPA, EcoMo) at system level, AWETrim (VSM, Billow) at kite level, OpenSourceAWE, EKF-AWE and awe-event-predictor at operation level, linked by awesIO

Level Tool What it does
System TEF Techno-economic framework: sizes the system and finds the design with the lowest cost of energy
System AWESPA Wind resource, power curves and annual energy production
System EcoMo Economic model: capital, operation and maintenance, replacement cost and LCoE
Kite AWETrim Quasi-steady kite simulation: aero-structural trim, reduced-order models and trajectory optimisation
Kite Vortex-Step-Method Fast aerodynamics of curved, deforming wings
Kite Billow Structural model of soft inflatable kites: tubes, wrinkling canopy and bridle lines
Operation OpenSourceAWE Julia ecosystem for dynamic simulation and control of kite power systems
Operation EKF-AWE Extended Kalman filter: the kite as a wind and state sensor
Operation awe-event-predictor Machine-learning early warning of critical tether-force peaks
Open data: soft kites (7 datasets)
Dataset Kite Flight
TUDELFT_V3_KITE TU Delft V3, 25 m² Geometry, specifications and analyses
Flightdata24032017 TU Delft V3, 25 m² 24 March 2017, ten pumping cycles with an onboard flow sensor
Flightdata08102019 TU Delft V3, 25 m² 8 October 2019
Flightdata12052023 Kitepower V9, 60 m² 12 May 2023, Dirksland, the Netherlands
Flightdata27112023 Kitepower V9, 60 m² 27 November 2023, Bangor Erris, Ireland
Flightdata05062024 Kitepower V9, 60 m² 5 June 2024, Bangor Erris, Ireland
Flightdata09102025 TU Delft V3, 25 m² 9 October 2025, Bangor Erris, with photogrammetry of the flying shape

Rigid-wing systems

Full overview coming soon.

Tool What it does
MegAWES Matlab/Simulink model of a multi-megawatt rigid-wing pumping system, 3DoF and 6DoF dynamics
AWE-SE Systems-engineering framework for design and scaling of fixed-wing ground-generation systems, coupling AWE-Power and AWE-Eco (MATLAB)
AWE-Power Quasi-steady cycle-power model of fixed-wing ground-generation systems (MATLAB)
AWE-Eco Reference economic model for AWE systems, IEA Wind Task 48 (MATLAB)
Open data: rigid wings (2 datasets)
Dataset System Flight
ampyx-ap2-flightdata Ampyx Power AP2 3 October 2017
Flightdata2022-Kitemill Kitemill 29 March – 28 April 2022

Learn more about airborne wind energy

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  1. Vortex-Step-Method Vortex-Step-Method Public

    Vortex Step Method

    Python 13 2

  2. ASKITE ASKITE Public

    Python 6 2

  3. awesIO awesIO Public

    Input/Output standard for airborne wind energy systems

    Python 4 2

  4. MegAWES MegAWES Public

    Matlab/Simulink model of a megawatt-class airborne wind energy system based on rigid wing technology.

    MATLAB 27 8

  5. AWE-Eco AWE-Eco Public

    A reference economic model for airborne wind energy systems

    MATLAB 3

  6. AWETrim AWETrim Public

    Quasi-steady simulations of soft kites. Aerodynamics, aero-structural, optimization, experimental validation and estimation.

    Python 5 3

Repositories

Showing 10 of 55 repositories
  • Billow Public

    Minimum-energy structural modelling of soft, inflatable structures.

    awegroup/Billow's past year of commit activity
    Python 0 Apache-2.0 0 3 0 Updated Oct 22, 2026
  • awesIO Public

    Input/Output standard for airborne wind energy systems

    awegroup/awesIO's past year of commit activity
    Python 4 MIT 2 6 0 Updated Oct 21, 2026
  • AWETrim Public

    Quasi-steady simulations of soft kites. Aerodynamics, aero-structural, optimization, experimental validation and estimation.

    awegroup/AWETrim's past year of commit activity
    Python 5 Apache-2.0 3 6 1 Updated Oct 20, 2026
  • EKF-AWE Public

    Iterated extended Kalman filter for wind and state estimation of airborne wind energy systems (kites), using only position, velocity, tether force and reel-out speed. Code of Cayon et al., Wind Energ. Sci. 2025.

    awegroup/EKF-AWE's past year of commit activity
    Python 5 MIT 1 2 0 Updated Oct 19, 2026
  • .github Public
    awegroup/.github's past year of commit activity
    Python 0 0 0 0 Updated Oct 16, 2026
  • Vortex-Step-Method Public

    Vortex Step Method

    awegroup/Vortex-Step-Method's past year of commit activity
    Python 13 MIT 2 21 0 Updated Oct 13, 2026
  • TEF Public

    A modular techno-economic framework for the conceptual design and optimisation of soft wing airborne wind energy systems.

    awegroup/TEF's past year of commit activity
    Python 2 MIT 0 0 0 Updated Oct 8, 2026
  • EcoMo Public

    Python implementation of the AWE-Eco model, transferred from MATLAB and further improved.

    awegroup/EcoMo's past year of commit activity
    Python 0 MIT 0 0 0 Updated Oct 6, 2026
  • awegroup/awe-event-predictor's past year of commit activity
    Python 1 MIT 0 0 0 Updated Sep 30, 2026
  • awegroup/KAT-Kite-Analysis-Terminal's past year of commit activity
    Python 1 MIT 0 0 0 Updated Sep 25, 2026

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