Funding for this research was provided by:
Deutsches Zentrum für Luft- und Raumfahrt
Deutsches Zentrum für Luft- und Raumfahrt e. V. (DLR)
Received: 11 August 2020
Accepted: 6 April 2021
First Online: 1 May 2021
: We confirm that there are no potential competing interests (in none of the paper sections) and that all authors have approved the manuscript for submission. The content of the manuscript has not been published, or submitted for publication elsewhere.