totalCoefficients Element |
Formulas for modification of aerodynamic data.
Namespace: Empty
Schema: Empty
Name | Occurrences | Description |
---|---|---|
All | ||
cfxFormula | [0, 1] | Formula for the force coefficient in x direction |
cfyFormula | [0, 1] | Formula for the force coefficient in y direction |
cfzFormula | [0, 1] | Formula for the force coefficient in z direction |
cmxFormula | [0, 1] | Formula for the moment coefficient around the x axis |
cmyFormula | [0, 1] | Formula for the moment coefficient around the y axis |
cmzFormula | [0, 1] | Formula for the moment coefficient around the z axis |
controlSurfaces | [0, 1] | List of control surfaces |
dampingDerivatives | [0, 1] | Formulas for damping derivatives for positive and negative rotation rates |
Name | Type | Required | Description |
---|---|---|---|
externalDataDirectory | string | ||
externalDataNodePath | string | ||
externalFileName | string |
This node contains the formulas for modification of the aerodynamic coefficients. They are formulated in the way: coefficient = [coefficientFormula], e.g.: <cfzFormula>="cfz + 0.1" means "cfz = cfz + 0.1". The formulas are either modifying the total results of discrete loadcases, or they are modifying the whole performance map for that coefficient. Available formula operators are (from low to high priority):
Operator | Explanation |
+ | Addition |
- | Subtraction |
* | Multiplication |
/ | Division |
^ | Raise to power |
SQRT() | Square root |
ARCSIN() | Arc sine |
SIN() | Sine |
ARCCOS() | Arc cosine |
COS() | Cosine |
ARCTAN() | Arc tangent |
TAN() | Tangent |
EXP() | Exponential function (base-e) |
LN() | Natural logarithm (base-e) |
LOG() | Common logarithm (base-10) |
() | Brackets (can be nested to a nearly unlimited depth) |
Parameter | Explanation |
MA | Mach number |
RE | Reynolds number |
AOY | Angle of yaw |
AOA | Angle of attack |
CFX | Force coefficient in x direction |
CFY | Force coefficient in y direction |
CFZ | Force coefficient in z direction |
CMX | Moment coefficient around the x axis |
CMY | Moment coefficient around the y axis |
CMZ | Moment coefficient around the z axis |
PI | PI constant |
Formula for modification of force coefficients in x direction
Formula for modification of force coefficients in y direction
Formula for modification of force coefficients in z direction
Formula for modification of moment coefficients around the x axis
Formula for modification of moment coefficients around the y axis
Formula for modification of moment coefficients around the z axis
Formula for modification of the damping derivatives. This node can only be used in case of performance map computations.
Formula for modification of the control surface performance maps. This node can only be used in case of performance map computations.