Directional acoustic underwater thruster

Ziyu Wang, Xiaotun Qiu, Jie Zhu, Jon Oiler, Shih Jui Chen, Jing Shi, Eun Sok Kim, Hongyu Yu

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


This study describes a tested prototype for a controllable directional underwater thruster with no moving parts. During operation, a high-intensity acoustic wave creates directional water jets and the device moves itself in the opposite direction. When the underwater thruster moves along a non-vertical angle, it can produce straight backward thrust of 2.3 mN and lateral thrust of 0.6 mN in parallel with the device surface, with a total thrust-to-weight ratio of 2:1. To enhance the acoustic streaming effect, a self-focusing acoustic transducer (SFAT) with air reflectors is used to focus the acoustic wave.

Original languageEnglish (US)
Article number5895022
Pages (from-to)1114-1117
Number of pages4
JournalIEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
Issue number6
StatePublished - Jun 2011

ASJC Scopus subject areas

  • Instrumentation
  • Acoustics and Ultrasonics
  • Electrical and Electronic Engineering


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