Bimodal unmanned vehicle: propulsion system integration and water/air interface testing

Bacciaglia, A, Guo, D, Marzocca, P, Bil, C and Ceruti, A 2018, 'Bimodal unmanned vehicle: propulsion system integration and water/air interface testing', in Proceedings of the 31st Congress of the International Council of the Aeronautical Sciences (ICAS 2018), Belo Horizonte, Brazil, 9-14 September 2018, pp. 1-10.


Document type: Conference Paper
Collection: Conference Papers

Title Bimodal unmanned vehicle: propulsion system integration and water/air interface testing
Author(s) Bacciaglia, A
Guo, D
Marzocca, P
Bil, C
Ceruti, A
Year 2018
Conference name ICAS 2018
Conference location Belo Horizonte, Brazil
Conference dates 9-14 September 2018
Proceedings title Proceedings of the 31st Congress of the International Council of the Aeronautical Sciences (ICAS 2018)
Publisher Deutsche Gesellschaft für Luft- und Raumfahrt
Place of publication Bonn, Germany
Start page 1
End page 10
Total pages 10
Abstract A multi-modal UAV capable of sustained aerial flight, locomotion in water and deployment from a tube filled with compressed air is under development. This paper covers the design and integration process of a CO2 thruster previously designed in a vehicle designed to fulfil mission requirements in terms of altitude and velocity after water/air transition. The thruster uses a common CO2 cartridge available off-the-shelf to accelerate water stored inside a water chamber for efficient and sustained thrust. Water is chosen as vectorial fluid since it is available from the surroundings. Analytical model, described in the paper, evaluates water to air transition phase in terms of trajectory, reached altitude and velocity. After thruster performances evaluation thanks to the analytical model, an experimental prototype was fabricated and tested for model validation. High speed camera is used to track vehicle transition and Kinovea software exports resulting data from a recorded video to spreadsheet formats for scientific study and post-processing. A comparison and discussion of the results as future work is also proposed with areas for improvement and development.
Subjects Aircraft Performance and Flight Control Systems
Keyword(s) Bi-modal vehicle
CO2 thruster
Water egress trajectory
ISBN 9783932182884
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