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Active Flow Control on Vertical Tail Models

Andino, Marlyn Y. and Lin, John C. and Roman, Seele and Graff, Emilio C. and Gharib, Mory and Whalen, Edward A. and Wygnanski, Israel J. (2019) Active Flow Control on Vertical Tail Models. AIAA Journal, 57 (8). pp. 3322-3338. ISSN 0001-1452. PMCID PMC6800738. doi:10.2514/1.J057876.

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Active flow control (AFC) subscale experiments were conducted at the Lucas Wind Tunnel of the California Institute of Technology. Tests were performed on a generic vertical tail model at low speeds. Fluidic oscillators were used at the trailing edge of the main element (vertical stabilizer) to redirect the flow over the rudder and delay or prevent flow separation. Side force increases in excess of 50% were achieved with a 2% momentum coefficient (C_μ) input. The results indicated that a collective C_μ of about 1% could increase the side force by 30–50%. This result is achieved by reducing the spanwise flow on the swept back wings that contributes to early flow separation near their tips. These experiments provided the technical backdrop to test the full-scale Boeing 757 vertical tail model equipped with a fluidic oscillator system at the National Full-scale Aerodynamics Complex 40-by 80-foot Wind Tunnel, NASA Ames Research Center. The C_μ is shown to be an important parameter for scaling a fluidic oscillator AFC system from subscale to full-scale wind tunnel tests. The results of these tests provided the required rationale to use a fluidic oscillator AFC configuration for a follow-on flight test on the Boeing 757 ecoDemonstrator.

Item Type:Article
Related URLs:
URLURL TypeDescription CentralArticle
Lin, John C.0000-0003-2794-184X
Gharib, Mory0000-0003-0754-4193
Additional Information:This material is declared a work of the U.S. Government and is not subject to copyright protection in the United States. Received 3 September 2018; revision received 26 April 2019; accepted for publication 9 May 2019; published online 16 July 2019.
Issue or Number:8
PubMed Central ID:PMC6800738
Record Number:CaltechAUTHORS:20190806-083540450
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Official Citation:Active Flow Control on Vertical Tail Models. Marlyn Y. Andino, John C. Lin, Seele Roman, Emilio C. Graff, Mory Gharib, Edward A. Whalen, and Israel J. Wygnanski AIAA Journal 2019 57:8, 3322-3338; doi: 10.2514/1.J057876
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:97670
Deposited By: Tony Diaz
Deposited On:06 Aug 2019 18:44
Last Modified:15 Feb 2022 19:35

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