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EP: Fachverband Extraterrestrische Physik

EP 11: Planets and Small Bodies

EP 11.3: Vortrag

Freitag, 20. März 2026, 11:45–12:00, KH 01.019

Characterising and Evaluating Acoustic Transducers in Water for TRIPLE-FRS — •Alexandros Deslis, Ömer Altug, Jan Audehm, Mia Giang Do, Dirk Heinen, Lars Heuermann, Julien Leroux, Lukas Michels, Andreas Nöll, Christopher Wiebusch, and Simon Zierke — III. Physikalisches Institut B - RWTH Aachen University

The TRIPLE project line, initiated by the German Space Agency at DLR, aims to develop technologies for the exploration of subglacial ocean worlds on moons of the outer solar system, in the search for extraterrestrial life. TRIPLE consists of three core components: a melting probe for penetrating the ice, an autonomous underwater exploration vehicle, and an astrobiological laboratory for sample analysis. One key subsystem of the melting probe is the Forefield Reconnaissance System (FRS), which enables the detection of obstacles within the ice as well as the identification of the ice-water boundary. It includes a sonar which employs a piezoelectric tonpilz transducer to both emit and receive acoustic signals. Several transducer designs were evaluated in water in the laboratory. Here, we compare key acoustic parameters, such as sending and receiving performances, across these designs in search for the most promising setup for the mission's needs. This presentation introduces the methods and presents results of these studies.

Keywords: Acoustics; Forefield Reconnaissance; Ice melting; Icy moons; Sonar