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Space Shuttle: Difference between revisions
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→The Reaction Control System
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As of May 2015, this assembly has been simplified in FG as follows: Thrusters are located at their correct position (nose and aft pods), resulting in approximately correct yaw, pitch and roll moments when fired. Each basic direction in which a thruster can fire from a module is modeled as a single effective thruster (for instance, no thruster can fire backward through the shuttle from the nose module, pod thrusters can't fire towards each other) with the combined thrust of all real thrusters at the module into that direction, resulting in a total of 13 individually controlled RCS thrusters and RCS-generated control moments very close to the real assembly. | As of May 2015, this assembly has been simplified in FG as follows: Thrusters are located at their correct position (nose and aft pods), resulting in approximately correct yaw, pitch and roll moments when fired. Each basic direction in which a thruster can fire from a module is modeled as a single effective thruster (for instance, no thruster can fire backward through the shuttle from the nose module, pod thrusters can't fire towards each other) with the combined thrust of all real thrusters at the module into that direction, resulting in a total of 13 individually controlled RCS thrusters and RCS-generated control moments very close to the real assembly. | ||
=== RCS DAP schemes === | |||
The real Space Shuttle has a multitude of (partially mission-specific) DAP schemes, each with different gains and deadbands, which control the thruster firing pattern in response to the controllers. A fair selection of these is implemented in FG. In the real Shuttle cockpit, there is both a rotational hand controller (RHC) and a translational hand controller (THC) to initiate either rotations of the shuttle or translational accelerations (e.g. for approach and docking). In FG, {{keypress| m}} corresponds to switching from THC to RHC and back. | |||
== Glossary of acronyms == | == Glossary of acronyms == | ||