Dear Flow Design Developers,   I am a student using Flow Design for most of my projects that involves airflow and the easy manipulation of subsonic airflow environment was proved to be convenient. the scenario it provides fits Aeromodelling and UAV design really well so I am suggesting some more features to be added.   1. The Cl or Cy, which stand for the lift coefficient of an object. Lift is the vertical component of the aerodynamic force on an object. Cy is an important feature of a vehicle as it influences the balance of the force. For a UAV I may calculate Cy for different attack angle (the angle between the heading and velocity). e.g. the plane usually fly at a higher attack angle when the speed is lower to generate enough lift for horizontal flying. For a model car it influences the balance of force. Negative lift help the car to stay on the ground and the wheels could have more friction.   2. The Cm, which is the coefficient of torque (moment) around certain  axis. This is mainly for airplane though.   Now thanks to the Cd graph I am enabled to compare the drag of each layout but the (initial ) design of some vehicles involves different parameters. e.g. maybe a certain layout has a smaller Cd at a certain attack angle but it might also generate smaller lift. To generate same lift the attack angle should be enlarged and at the same time the Cd is enlarged. Knowing the vertical component is rather crucial.   Thanks for reading this and I am looking forward to your reply. Regards Hao Li    P.S. I am using Flow for a F3P indoor model project. You can find me on GitHub https://github.com/HaoLi111 Show More