TY - GEN
T1 - Hydrophilic Coatings for Natural Laminar Flow
AU - Iijima, Hidetoshi
AU - Iijima, Yoshimi
AU - Suga, Takeo
AU - Minami, Hidehiko
AU - Takao, Kazumi
N1 - Funding Information:
The authors thank Mr. Muneyoshi Nakagawa, Dr. Naoko Tokugawa, and Dr. Dongyoun Kwak for extending their support during the evaluation of the coatings used in this study and providing helpful suggestions.
Publisher Copyright:
© 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.
PY - 2023
Y1 - 2023
N2 - The presence of surface contaminants on the wing leading edge of aircraft can expedite boundary-layer transition from laminar to turbulent. For aircraft wings to maintain natural laminar flow and reduce skin-friction drag, it is important to ensure their surfaces remain free from contaminants and/or insects. Japan Aerospace Exploration Agency has recently developed a method for maintaining laminar flow over wings. It involves the application of hydrophilic coatings on wing surfaces, which can be subsequently washed clean with water. These coatings prevent insects from adhering to the wing surface. The results of the coupon and ground tests performed in this study reveal that compared to conventional aircraft coatings, the proposed hydrophilic coatings demonstrate washabilities improved by up to 20%.
AB - The presence of surface contaminants on the wing leading edge of aircraft can expedite boundary-layer transition from laminar to turbulent. For aircraft wings to maintain natural laminar flow and reduce skin-friction drag, it is important to ensure their surfaces remain free from contaminants and/or insects. Japan Aerospace Exploration Agency has recently developed a method for maintaining laminar flow over wings. It involves the application of hydrophilic coatings on wing surfaces, which can be subsequently washed clean with water. These coatings prevent insects from adhering to the wing surface. The results of the coupon and ground tests performed in this study reveal that compared to conventional aircraft coatings, the proposed hydrophilic coatings demonstrate washabilities improved by up to 20%.
KW - Hydrophilic coating
KW - Insect contamination
KW - Natural laminar flow
KW - Photocatalyst
KW - Polymer brush
UR - http://www.scopus.com/inward/record.url?scp=85137817681&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85137817681&partnerID=8YFLogxK
U2 - 10.1007/978-981-19-2689-1_29
DO - 10.1007/978-981-19-2689-1_29
M3 - Conference contribution
AN - SCOPUS:85137817681
SN - 9789811926884
T3 - Lecture Notes in Electrical Engineering
SP - 385
EP - 393
BT - The Proceedings of the 2021 Asia-Pacific International Symposium on Aerospace Technology APISAT 2021, Volume 1
A2 - Lee, Sangchul
A2 - Han, Cheolheui
A2 - Choi, Jeong-Yeol
A2 - Kim, Seungkeun
A2 - Kim, Jeong Ho
PB - Springer Science and Business Media Deutschland GmbH
T2 - Asia-Pacific International Symposium on Aerospace Technology, APISAT 2021
Y2 - 15 November 2021 through 17 November 2021
ER -