A scientific kit to discover the secrets of aerodynamics and fluid dynamics. Featuring two dynamic models of a three-rotor helicopter and airboat to build, children can discover the way transmission mechanisms work. ● More than 130 interchangeable components and an instruction booklet to guide you step by step ● In addition to assembly instructions, the kit contains a sheet with lots of interesting facts about the physics of flight and nautical engineering. ● Download the free app with interactive 3D instructions ● Made in Italy