Dynamic wind tunnel testing of delta-wing model without support interference

Daiki Kai, Hiroki Sugiura, Asei Tezuka

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Citations (Scopus)


The understanding of the dynamic characteristics of an airplane at high angles of attack (AOAs) is essential in making accurate predictions regarding its behavior. A magnetic suspension and balance system (MSBS) suspends a model without physical support systems, thus enabling wind tunnel tests to be conducted without support interference. In this study, longitudinal dynamic characteristics of a delta-wing aircraft model at AOAs of up to 20° were investigated using an MSBS that could suspend an aircraft model continuously within an AOA range of ±40°. The acquired data were fitted to the dynamic derivative model using multiple regression analysis, considering the AOA acceleration. Additionally, the flowfield over the wing was also acquired by conducting particle image velocimetry (PIV) tests. For AOAs of ±5.9°, the dynamic aerodynamic forces agreed well with the dynamic derivative model. However, at higher AOAs, the dynamic derivative model was not sufficient for describing the aerodynamic forces. From the PIV tests, it was observed that the position of the vortex core during the pitch motion moved around the positions observed in the static cases.

Original languageEnglish
Title of host publicationAIAA Scitech 2020 Forum
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
Number of pages13
ISBN (Print)9781624105951
Publication statusPublished - 2020
EventAIAA Scitech Forum, 2020 - Orlando, United States
Duration: 2020 Jan 62020 Jan 10

Publication series

NameAIAA Scitech 2020 Forum
Volume1 PartF


ConferenceAIAA Scitech Forum, 2020
Country/TerritoryUnited States

ASJC Scopus subject areas

  • Aerospace Engineering


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