Simultaneous Measurement of Surface Pressure, Temperature and Deformation by Pressure Sensitive Paint with Mapped Excitation Light

2022 Fiscal Year Final Research Report

• Project/Area Number: 20K14959
• Research Category: Grant-in-Aid for Early-Career Scientists
• Allocation Type: Multi-year Fund
• Review Section: Basic Section 24010:Aerospace engineering-related
• Research Institution: 防衛大学校(総合教育学群、人文社会科学群、応用科学群、電気情報学群及びシステム工学群)
• Principal Investigator: Taguchi Masato 防衛大学校(総合教育学群、人文社会科学群、応用科学群、電気情報学群及びシステム工学群), システム工学群, 准教授 (70806794)
• Project Period (FY): 2020-04-01 – 2023-03-31
• Keywords: Pressure Sensitive Paint

Outline of Final Research Achievements

Wind tunnel tests are used to investigate aerodynamic characteristics of aircrafts. Surface pressure, surface temperature, and deformation of the models are important parameters. In this study, a new measurement scheme based on pressure sensitive paint (paint-type pressure sensor) was developed to simultaneously measure these parameters. As a result, although simultaneous measurement of all three parameters could not be demonstrated, a new method that can arbitrarily change the properties of the paint as a sensor after application was established, which was not initially expected. This is a unique and useful feature in that the sensitivity of the sensor can be modulated flexibly during the wind tunnel test.

Free Research Field

Aerodynamics

Academic Significance and Societal Importance of the Research Achievements

本研究で新たに得られた塗料型圧力センサの性質を任意に制御する技術は，風洞試験でこのセンサを使うユーザーにとって，試験の効率化やコスト削減を行う上でとても有用である．これまでは，センサとしての性質は塗料の組成で決まっていた．ゆえに実際に試験をして，その結果を受けてセンサを交換したい場合，時間と費用をかけて塗料を塗りなおす必要があった．本手法を使えばその必要はなく，塗料に照射する光（励起光）の波長帯を変えるだけでセンサの性質を変えることができる．この機能は，学術的にユニークであるに留まらず，将来的に航空機等の開発の効率化に貢献できる可能性があり，意義がある．