Flow separation control on a full-scale vertical tail model using sweeping jet actuators

Marlyn Y. Andino, John C. Lin, Anthony E. Washburn, Edward A. Whalen, Emilio C. Graff, Israel J. Wygnanski

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


This paper describes test results of a joint NASA/Boeing research effort to advance Active Flow Control (AFC) technology to enhance aerodynamic efficiency. A full-scale Boeing 757 vertical tail model equipped with sweeping jets AFC was tested at the National Full-Scale Aerodynamics Complex 40- by 80-Foot Wind Tunnel at NASA Ames Research Center. The flow separation control optimization was performed at 100 knots, a maximum rudder deflection of 30°, and sideslip angles of 0° and -7.5°. Greater than 20% increments in side force were achieved at the two sideslip angles with a 31-actuator AFC configuration. Flow physics and flow separation control associated with the AFC are presented in detail. AFC caused significant increases in suction pressure on the actuator side and associated side force enhancement. The momentum coefficient (Cµ) is shown to be a useful parameter to use for scaling-up sweeping jet AFC from sub-scale tests to full-scale applications. Reducing the number of actuators at a constant total Cµ of approximately 0.5% and tripling the actuator spacing did not significantly affect the flow separation control effectiveness.

Original languageEnglish
Title of host publication53rd AIAA Aerospace Sciences Meeting
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
ISBN (Print)9781624103438
StatePublished - 2015
Externally publishedYes
Event53rd AIAA Aerospace Sciences Meeting, 2015 - Kissimmee, United States
Duration: 5 Jan 20159 Jan 2015

Publication series

Name53rd AIAA Aerospace Sciences Meeting


Conference53rd AIAA Aerospace Sciences Meeting, 2015
Country/TerritoryUnited States


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