Howto:Modelling hydrodynamics in JSBSim

Introduction

This page intends to describe how to model hydrodynamic forces and moments in JSBSim (i.e. how things interact with water). It is based around JSBSim external forces and a couple of generic systems for JSBSim that are available in FGData, namely hydrodynamics.xml, hydrodynamic-planing.xml and hydrodynamic-planing-floats.xml.

NOTE: These methods and systems are under active, but slow development, there are known and unknown bugs and inconsistencies present. Future developments may require changes in the per-aircraft files.

Examples

Examples by the author of the generic systems:

• Malmö Flygindustri MFI-9
• Short Empire
• https://github.com/andgi/FlightGear-Gokstad
• https://github.com/andgi/FlightGear-MTB_20m
• https://github.com/andgi/FlightGear-Monitor
• https://github.com/andgi/FlightGear-UB_I

Other aircraft

• Cessna 172P