Watched Creating the World’s Most Efficient Drone which mentions tools for calculating drones.

TIL AirShaper - a cloud-based platform that lets users upload 3D models and automatically simulate and optimize their aerodynamic and flow performance without specialist expertise.

TIL Onshape - a cloud-native 3D CAD and product development platform that runs in a browser and enables real-time collaboration and integrated data management without traditional file-based constraints.  TIL Semi-solid State Battery technology.