klee wyck
Guru
- Joined
- Feb 8, 2014
- Messages
- 987
- Location
- USA
- Vessel Name
- Domino and Libra
- Vessel Make
- Malcom Tennant 20M and Noordzee Kotter 52
It would be interesting to know the increased fuel consumption value (producing electricity for the rotors + drag) as a percentage of normal fuel consumption, to stabilize the boat.
Ted
I won’t ever have an answer for that question since I have no way to measure fuel use within that likely range of sensitivity.
Old school engine and no flow sensing equipment.
Having seen what rpm produces what speed would suggest the difference will be too small to measure. Again, not nothing I am sure, but quite likely not enough to cause a minute of concern.
I am going to make the 5 hour trip to Anacortes for the boat show on Tuesday so that Magnus can exhibit the installation and sea trial for prospects while I am gone to Mexico. That trip involves the Strait of Juan de Fuca and Rosario Strait so I might get a better trial that day.
For spinning the rotors you could likely compute the fuel,use from the fuel curve after converting 1100 watts to hp. Less than 2 amps is not much power.
Drag would be a total guess. If it does not affect speed at a given rpm, can it be significant?
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