Patent · US Active

Airframe-integrated propeller-driven propulsion systems

US9914528B2 · kind B2 · utility

12Cited by
15References
10Claims
0Family size

Assignee

Inventors

Key dates

Filing dateFeb 25, 2015
Grant dateMar 13, 2018
Priority date—
Expiry dateOct 8, 2035

Classification

  • Technology area (CPC B)Performing Operations; Transporting
  • CPC primaryB64C23/005
  • WIPO fieldTransport
  • WIPO sectorMechanical engineering

Abstract

Propeller-driven craft (e.g., aircraft) are provided with at least one propulsion system having at least one engine and at least one aerial tractor propeller which generates a propeller propwash airflow when driven by the engine. At least one airfoil is disposed in the propeller propwash airflow of the at least one aerial tractor propeller. The airfoil is contoured and oriented relative to a swirl rotation angle (ω) of the propeller propwash airflow in order to induce a forward force component on the craft in response to the propeller propwash airflow over the at least one airfoil, thus improving the craft's performance and/or reducing fuel consumption.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.