1. Researcher, Dept. of Applied Mechanics, Aalto Univ., P.O. Box 14400, FI-00076 Aalto, Finland; and CEO, Aero RD Ltd., Otakuja 3, FI-02150 Espoo, Finland (corresponding author).
2. Researcher, Dept. of Applied Mechanics, Aalto Univ., P.O. Box 14400, FI-00076 Aalto, Finland.
3. Vice President, Aero RD Ltd., Otakuja 3, FI-02150 Espoo, Finland.