Patent ID: 11939060
Assignee: COPPERHEAD AERONAUTICS, LLC
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 18:
19. The method of claim 16, wherein the internal rotor comprises an outer surface and at least one ridge coupled to and protruding radially from the outer surface, wherein the method further comprises at least one of:
minimizing a vortex of the airflow proximate an outer end of the internal rotor in response to the at least one ridge being coupled to the outer surface at the outer end of the internal rotor, wherein the outer end of the internal rotor is disposed proximate to or at least partially within a wall of the sidewall system of the lift nacelle, or
reducing spanwise flow of the airflow in response to the at least one ridge being coupled between outer ends of the internal rotor.