189
edits
JSBSim Aerodynamics: Difference between revisions
Jump to navigation
Jump to search
→Effects
Jonsberndt (talk | contribs) (→Frames: Fixed definition of Wind frame.) |
|||
| Line 62: | Line 62: | ||
* '''Stall''' - A 'stall' is generally regarded as a loss of lift due to flow separation over the top of a wing, however, examination of lift polar for an airfoil over a full 360 degrees shows that significant amounts of lift are NOT lost as the stall occurs. The biggest aerodynamic effect of a stall is a large and rapid increase in drag. | * '''Stall''' - A 'stall' is generally regarded as a loss of lift due to flow separation over the top of a wing, however, examination of lift polar for an airfoil over a full 360 degrees shows that significant amounts of lift are NOT lost as the stall occurs. The biggest aerodynamic effect of a stall is a large and rapid increase in drag. | ||
* '''Spin''' - Spins are caused loss of stability in the Yaw Moment axis. A stock [[Aeromatic]] [[FDM]] yaw section does not take alpha into account when calculating the yaw moment. | * '''Spin''' - Spins are caused loss of stability in the Yaw Moment axis. A stock [[Aeromatic]] [[FDM]] yaw section does not take alpha into account when calculating the yaw moment. | ||
* '''Aerodynamic Reference Point''' - JSBSim provides a way to shift the aerodynamic reference point (AeroRP) forward and aft in response to mach, pitch or other influences. Create a function in the <aerodynamics> section called aero_ref_pt_shift_x or just use the tag <aero_ref_pt_shift_x>. The value this function returns is internally multiplied by the chord entered in the <metrics> section. | |||
{{JSBSim}} | {{JSBSim}} | ||