RFE: 10 Adjust polar efficiency

rgleason / weather_routing_pi

Weather Routing plugin for OpenCPN

GNU General Public License v3.0

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RFE: 10 Adjust polar efficiency #97

Open ozolli opened 2 years ago

ozolli commented 2 years ago

There are some options which I often use on Sailgrib and I would like to see them implemented here:

Polar efficiency below 10kn TWS
Polar efficiency above 20kn TWS
Night time polar loss of efficiency

This is particularly useful with new or few crew onboard, or in case of conservative cruising.

rgleason commented 2 years ago

Good ideas that might fit well in the Configuration > Advanced Tab.

ozolli commented 2 years ago

Ah I forgot another important setting: When the boat speed is less than a given value, then motor at a given speed.

rgleason commented 2 years ago

It would also help to have a new constraint added. A point that would force routing to port or starboard See https://github.com/rgleason/weather_routing_pi/issues/84

ozolli commented 2 years ago

This is what Saulgrib does but a different way. On Sailgrib you first make a route with any number of waypoints, then on each waypoint you can set to go to the waypoint or to let it on port or on starboard.

Then you let Sailgrib calculate the routing with this route and its constraints.

After the routing is calculated you can add a pivot point constraint anywhere on the isochrones and have it recalculated until you get what you want:

https://www.youtube.com/watch?v=4IkREAwjc-M

(Set English subtitles).

rgleason commented 2 years ago

Yes, this is where I saw the feature.

rgleason commented 11 months ago

Edit-config-Adjust-Polar-Eff

We need to make the mathematical relationship between Wind Strength X% and Polar efficiency < _kn TWS %

_kn TWS % Night time polar loss of efficiency - __%

Clear.

https://github.com/seandepagnier/weather_routing_pi/issues/283