getCoefficient

Class: Aero.FixedWing
Package: Aero

Get coefficient value for Aero.FixedWing object

Syntax

value = getCoefficient(aircraft,stateOutput,stateVariable)
value = getCoefficient(___,Name,Value)


Description

value = getCoefficient(aircraft,stateOutput,stateVariable) gets the coefficient value value from the coefficient specified by stateOutput and stateVariable.

value = getCoefficient(___,Name,Value) gets the coefficient value using one or more Name,Value pairs.

Input Arguments

aircraft — Aero.FixedWing object

scalar

Aero.FixedWing object, specified as a scalar.

stateOutput — Valid state output

vector of strings | character array

Valid state output, specified in a vector of strings or character array. For more information, see Aero.FixedWing.Coefficient.

Data Types: string | char

stateVariable — Valid state variable

vector

Valid state variable, specified in a vector of strings or character array. Valid state variables depend on the coefficients defined on the object. For more information, see Aero.FixedWing.Coefficient.

Data Types: string | char

Name-Value Pair Arguments

Specify optional comma-separated pairs of Name,Value arguments. Name is the argument name and Value is the corresponding value. Name must appear inside quotes. You can specify several name and value pair arguments in any order as Name1,Value1,...,NameN,ValueN.

Example: 'Component','Hello'

'State' — Aero.FixedWing.State object to calculate numeric values of Simulink.LookupTable objects

scalar

Aero.FixedWing.State object to calculate numeric values of Simulink.LookupTable objects, specified as a scalar.

Data Types: double

'Component' — Valid component name

scalar string

Valid component name, specified as a scalar string. Valid component names depend on the 'Name' property of an object and all its subcomponents. The default component is the current object.

Data Types: char | string

Output Arguments

value — Coefficient values

vector

Coefficient values, returned as a value of the same size as stateOutput and stateVariable. Vector contents depend on the type of coefficients in the vector.

Type of Coefficients in Vector	Vector
All numeric constants	Numeric vector
Simulink.LookupTable objects	Vector of Simulink.LookupTable objects
Mix of numeric constants and Simulink.LookupTable objects	Vector of cells
Simulink.LookupTable objects with state included	Numeric vector

Examples

Get Coefficient for Angle of Attack

Get a CD_alpha on an Aero.FixedWing object.

C182 = astC182();
CD_alpha = getCoefficient(C182, "CD", "Alpha")

CD_alpha =
    0.1210

Get Vector of Coefficient Values

Get a vector of coefficient values on a component within an Aero.FixedWing object.

C182 = astC182();
coeffs = getCoefficient(C182,{'CY'; 'Cm'},{'Aileron';'Aileron'},'Component','Aileron')

Get Simulink.LookupTable Coefficient

Get a Simulink.LookupTable coefficient from an Aero.FixedWing object.

SkyHogg = astSkyHogg();
Cl_zero = getCoefficient(SkyHogg,"Cl","Zero")

Cl_zero =
     0

Get Simulink.LookupTable Coefficient with State

Get a Simulink.LookupTable coefficient from an Aero.FixedWing object and include a state.

[SkyHogg, CruiseState] = astSkyHogg();
Cl_zero = getCoefficient(SkyHogg, "Cl", "Zero", "State", CruiseState)

Cl_zero =
     0

Limitations

• Each vector of inputs stateOutput and stateVariable must be the same length.

• When used with Simulink.LookupTable objects, this method requires a Simulink^® license.