Hi Robert, as far as I understand, these parameters are part of the glider specific polar file. There is a field for dry gross mass and for the max amount of water ballast in that file. The 100% in the XCSoar ballast dialogue should then refer to the given amount of liters you carry.
With the Nimbus 2 polar file downloaded from the Winpilot web site it should
look somewhat like the sample below:
*Nimbus 2c (20.3m) WinPilot POLAR file: MassDryGross[kg],
MaxWaterBallast[liters], Speed1[km/h], Sink1[m/s], Speed2, Sink2, Speed3, Sink3
493, 230, 119.83, -0.75, 179.75, -2.14, 219.69, -3.8
If you put your glider's actual dry mass (which I do not know) in the first
field (replace the 493) , maybe check if the other values are accurate, and
then put the polar file in the XCSoarData folder it should work for you.
This one here is only a sample! I downloaded it from the Winpilot site and
changed the ballast, but did not double check the values!
Martin
nimbus2c.plr
Description: Binary data
--- Am 05.01.2011 um 09:27 schrieb Robert Hart: > Hi > > I fly a (carbon) Nimbus 2c - which is not listed in the available > gliders. This has a water ballast capacity of 230 litres as opposed to > the Nimbus 2 limit of 159 litres. There are also differences in glider > mass and max AUW etc - all of which changes the wing loading! > > I can't see any way to increase the ballast beyond 100% or the other > aircraft parameters - and these changes are not part of the polar file. > > Does XCSoar need to define the (carbon) Nimbus 2c as a separate aircraft > in order to take account of all these differences? > > -- > Robert Hart ha...@interweft.com.au > +61 (0)438 385 533 http://www.hart.wattle.id.au > > > ------------------------------------------------------------------------------ > Learn how Oracle Real Application Clusters (RAC) One Node allows customers > to consolidate database storage, standardize their database environment, and, > should the need arise, upgrade to a full multi-node Oracle RAC database > without downtime or disruption > http://p.sf.net/sfu/oracle-sfdevnl > _______________________________________________ > Xcsoar-user mailing list > Xcsoar-user@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/xcsoar-user
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