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Howto:Modelling hydrodynamics in JSBSim: Difference between revisions
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Howto:Modelling hydrodynamics in JSBSim (view source)
Revision as of 23:39, 18 March 2017
, 18 March 2017→Known problems
m (Added some known bugs.) |
m (→Known problems) |
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== Known problems == | == Known problems == | ||
* The hydrodynamic-planing-floats system in FlightGear 2017.1.x and earlier appear to have some wires crossed - the float with the negative y-axis location appears to be on the right side of the aircraft which is not intended. | * The hydrodynamic-planing-floats system in FlightGear 2017.1.x and earlier appear to have some wires crossed - the float with the negative y-axis location appears to be on the right side of the aircraft which is not intended. Fixed before 2017.2.x. | ||
* The hydrodynamics planing model often reacts poorly to non-smooth water surfaces (in the terrain mesh, not waves) which is not that uncommon in FlightGear's terrain. Quickly reducing speed may help. | * The hydrodynamics planing model often reacts poorly to non-smooth water surfaces (in the terrain mesh, not waves) which is not that uncommon in FlightGear's terrain. Quickly reducing speed may help. | ||
* The hydrodynamics planing model requires a significantly increased FDM rate (the /sim/model-hz property) for good simulation results. This increases the CPU use by JSBSim (which usually is in the low single digit percent before). On some systems this change in CPU use appears to have a considerable impact on the frame rate. | * The hydrodynamics planing model requires a significantly increased FDM rate (the /sim/model-hz property) for good simulation results. This increases the CPU use by JSBSim (which usually is in the low single digit percent before). On some systems this change in CPU use appears to have a considerable impact on the frame rate. | ||