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Welcome to Spinning Wing. We aim to provide useful content about helicopters, tiltrotors, and wind turbines—machines with spinning wings. We are in the process of creating new articles. Feel free to let us know if you have any recommendations, comments or questions.

January 23, 2022. We've added a lateral trim calculator for a conventional hovering helicopter.

January 11, 2022. Check out our personal air vehicle article. Could they replace helicopters for many missions?

December 13, 2021. We're working on a database of helicopter/rotorcraft models. Check out our list of models which we plan to expand in the near future.


Flight Test Data: Estimating Frequency and Damping

Helicopter Abbreviations and Symbols

Helicopter Components

Helicopter Flight, Control and Stability

Helicopter Forces and Moments

Helicopter modeling and simulation

Helicopter Performance

Helicopter Rotors

Wind Turbines

Wind Turbine Airfoil Design

Wind Turbine Components

Wind Turbine Startup Process

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