Flapping Foil

Hi everybody interested in the flapping foil propulsion.
Please see my small boat experiment:

 

Thanks for posting! Congratulations.

What advantages does this system offer over a propeller driven system? What applications do you see this being used in?

 

Thank You!
Thay say that such system has the following advantages:
- are relatively low-frequency systems,
- possess sufficiently high efficiency,
- are multi-functional in the sense of being capable of
operating in different regimes of motion,
- can combine the function of propulsor, control device
and stabilizer,
- can provide high maneuverability,
- possess more acceptable cavitation characteristics
than conventional propellers,
- have relatively low aerodynamic drag in the
switched-off position, etc...

The closest analogue, as I think, is the Voith Schneider Propeller
that combines propulsion and steering in one unit.

 

Here are the boat test tracks:
Track history on Google Map:2019-10-17 14:51:02 http://www.gpxscan.com/gpxgooglemap_v2.jsp?gpx=642034e865764f01ba119f60e809ddcc&share=share
Track history on Google Map:2019-10-17 15:34:42 http://www.gpxscan.com/gpxgooglemap_v2.jsp?gpx=006de176c2574603a721b91f369467e7&share=share
Track history on Google Map:2019-10-20 16:03:48 http://www.gpxscan.com/gpxgooglemap_v2.jsp?gpx=1bdcac2b02ac4a9392433610125d1c10&share=share