Thrust Augmentation Study of Cross-Flow Fan for Vertical Take-Off and Landing Aircraft
Yeo, Ing Khang
Hobson, Garth V.
Gannon, Anthony J.
MetadataShow full item record
Vertical Take-Off and Landing (VTOL) has primarily seen research and development in the two traditional fields, namely the rotary wing and jet propulsion, with each seeking incremental improvements in thrust generation and fuel efficiency, respectively. In recent years, there has been increasing interest in the viability of the Cross-Flow Fans (CFF) being the primary source of aircraft propulsion. There has been measured success in horizontal flight; however, VTOL propulsion with CFFs remains elusive. The current study seeks to determine the feasibility of combining two CFFs in a back-to-back configuration that could augment the thrust generated, thus making VTOL a reality. Making use of an optimized CFF housing, the research aimed to maximize the thrust generated in the above mentioned configuration by varying the gap between the CFFs. Computational fluid simulations of the dual CFF configuration was performed using ANSYS CFX to find the thrust generated as well as the optimal operating point. Analysis was done at three different speeds (3,000 rpm, 5,000 rpm and 8,000 rpm) and four different distances between the dual CFFs (26 mm, 52 mm, 78 mm and 104 mm). Thereafter, an experiment was conducted to compare and validate the results of the simulation.
RightsThis publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. As such, it is in the public domain, and under the provisions of Title 17, United States Code, Section 105, is not copyrighted in the U.S.
Showing items related by title, author, creator and subject.
Givens, Todd Williams; LeMoine, John A. (Monterey, California. Naval Postgraduate School, 1984-12); NPS67-84-019The most accurate method for measuring turbojet/turbofan thrust is mechanical. A more practical method is often desired , however, since a mechanical device is costly and non-portable. An investigation was conducted ...
McReynolds, Paul (Monterey, California. Naval Postgraduate School, 1963-09-20);The turbine test rig requires two separate units for recording torque and thrust. A set-up using flexures and strain gages is best from the standpoint of accuracy, ease of operation, first cost and neatness of design. At ...
Waterman, Timothy J. (Monterey, California: Naval Postgraduate School, 2016-06);This study determined the optimum blade stagger angle for a cross-flow fan rotor and evaluated the performance of a 3D printed rotor. Using ANSYS-CFX and SolidWorks, the cross-flow fan was modeled computationally and tested ...