EntityQ1343028· pop 27· linked from 365 articleshelicopter rotorSign in to saverotary wings and control system that generates the lift and thrust for a helicopterConnectionshelicopterEntityFederal Aviation AdministrationEntityquadcopterEntityMoscowCityLeonardo da VinciEntitySaturnEntityCold WarEntityNASAConceptNazi GermanyConcepttitaniumEntityInternational Standard Book NumberEntitynickelEntityTitanEntityWright brothersEntityWayback MachineEntityMikhail LomonosovEntityEuclidean vectorEntitydigital object identifierEntityInternational Standard Serial NumberEntityUnited States Air ForceEntityCategoriesChinese inventionsHelicopter aerodynamicsHelicopter componentsLeonardo da Vinci projects