Mission and Aircraft Integration of Open Fan

Research Project, 2025 – 2028

Purpose and goal
The project "Mission & Aircraft Integration of Open Fan" will investigate how turbine engines with swept propeller and swirl reducing vanes will interact with performance and aerodynamics for a large single aisle aircraft. Alternative designs will be analyzed for aircraft weight, climb speed and interaction between the propeller wake and the aircraft wing. A model with propeller will be tested in a wind tunnel.

Expected effects and result
The project will provide an improved understanding of the aerodynamic integration of propeller engines on swept-wing aircraft intended for high subsonic flight speeds. Methods developed in two previous NFFP projects for the aerodynamic design of swept propellers and the design of modified airfoils for engine integration will be further improved. Finally, the project will support the industry´s setting requirements and technology needs for the next generation of energy-efficient aircraft.

Planned approach and implementation
The project will study the published proposals for large propeller-driven aircraft, and build alternative geometries to determine aerodynamic performance. Next, a performance model of the engine and aircraft will be compiled in GESTPAN and PACELAB, to simulate missions. A more detailed model of propeller-wing interaction will used to determine needed adjustments to the wing. Finally, a wind tunnel model will be built and tested to verify the aerodynamic interaction.