Detailed Description

Definition at line 222 of file FGMSIS.h.

Inheritance diagram for MSIS:

Collaboration diagram for MSIS:

Public Member Functions
	MSIS (FGFDMExec *)
	Constructor.

	~MSIS ()
	Destructor.

bool	InitModel (void)

bool	Run (bool Holding)
	Runs the MSIS-00 atmosphere model; called by the Executive Can pass in a value indicating if the executive is directing the simulation to Hold. More...

void	UseExternal (void)
	Does nothing. External control is not allowed.

Public Member Functions inherited from FGAtmosphere
	FGAtmosphere (FGFDMExec *)
	Constructor.

virtual	~FGAtmosphere ()
	Destructor.

virtual double	GetTemperature () const
	Returns the actual, modeled temperature at the current altitude in degrees Rankine. More...

virtual double	GetTemperature (double altitude) const =0
	Returns the actual modeled temperature in degrees Rankine at a specified altitude. More...

virtual double	GetTemperatureSL () const
	Returns the actual, modeled sea level temperature in degrees Rankine. More...

virtual double	GetTemperatureRatio () const
	Returns the ratio of the at-current-altitude temperature as modeled over the sea level value.

virtual double	GetTemperatureRatio (double h) const
	Returns the ratio of the temperature as modeled at the supplied altitude over the sea level value.

virtual void	SetTemperatureSL (double t, eTemperature unit=eFahrenheit)
	Sets the Sea Level temperature. More...

virtual void	SetTemperature (double t, double h, eTemperature unit=eFahrenheit)=0
	Sets the temperature at the supplied altitude. More...

virtual double	GetPressure (void) const
	Returns the pressure in psf.

virtual double	GetPressure (double altitude) const =0
	Returns the pressure at a specified altitude in psf.

virtual double	GetPressureSL (ePressure to=ePSF) const

virtual double	GetPressureRatio (void) const
	Returns the ratio of at-altitude pressure over the sea level value.

virtual void	SetPressureSL (ePressure unit, double pressure)
	Sets the sea level pressure for modeling. More...

virtual double	GetDensity (void) const
	Returns the density in slugs/ft^3. More...

virtual double	GetDensity (double altitude) const
	Returns the density in slugs/ft^3 at a given altitude in ft.

virtual double	GetDensitySL (void) const
	Returns the sea level density in slugs/ft^3.

virtual double	GetDensityRatio (void) const
	Returns the ratio of at-altitude density over the sea level value.

virtual double	GetSoundSpeed (void) const
	Returns the speed of sound in ft/sec.

virtual double	GetSoundSpeed (double altitude) const
	Returns the speed of sound in ft/sec at a given altitude in ft.

virtual double	GetSoundSpeedSL (void) const
	Returns the sea level speed of sound in ft/sec.

virtual double	GetSoundSpeedRatio (void) const
	Returns the ratio of at-altitude sound speed over the sea level value.

virtual double	GetAbsoluteViscosity (void) const
	Returns the absolute viscosity.

virtual double	GetKinematicViscosity (void) const
	Returns the kinematic viscosity.

virtual double	GetDensityAltitude () const

virtual double	GetPressureAltitude () const

Public Member Functions inherited from FGModel
	FGModel (FGFDMExec *)
	Constructor.

	~FGModel () override
	Destructor.

virtual SGPath	FindFullPathName (const SGPath &path) const

FGFDMExec *	GetExec (void)

const std::string &	GetName (void)

unsigned int	GetRate (void)
	Get the output rate for the model in frames.

virtual bool	Load (Element *el)

void	SetPropertyManager (FGPropertyManager *fgpm)

void	SetRate (unsigned int tt)
	Set the ouput rate for the model in frames.

Public Member Functions inherited from FGModelFunctions
std::string	GetFunctionStrings (const std::string &delimeter) const
	Gets the strings for the current set of functions. More...

std::string	GetFunctionValues (const std::string &delimeter) const
	Gets the function values. More...

FGFunction *	GetPreFunction (const std::string &name)
	Get one of the "pre" function. More...

bool	Load (Element el, FGFDMExec fdmex, std::string prefix="")

void	PostLoad (Element el, FGFDMExec fdmex, std::string prefix="")

void	PreLoad (Element el, FGFDMExec fdmex, std::string prefix="")

void	RunPostFunctions (void)

void	RunPreFunctions (void)

Public Member Functions inherited from FGJSBBase
	FGJSBBase ()
	Constructor for FGJSBBase.

virtual	~FGJSBBase ()
	Destructor for FGJSBBase.

void	PutMessage (const Message &msg)
	Places a Message structure on the Message queue. More...

void	PutMessage (const std::string &text)
	Creates a message with the given text and places it on the queue. More...

void	PutMessage (const std::string &text, bool bVal)
	Creates a message with the given text and boolean value and places it on the queue. More...

void	PutMessage (const std::string &text, int iVal)
	Creates a message with the given text and integer value and places it on the queue. More...

void	PutMessage (const std::string &text, double dVal)
	Creates a message with the given text and double value and places it on the queue. More...

int	SomeMessages (void) const
	Reads the message on the queue (but does not delete it). More...

void	ProcessMessage (void)
	Reads the message on the queue and removes it from the queue. More...

Message *	ProcessNextMessage (void)
	Reads the next message on the queue and removes it from the queue. More...

void	disableHighLighting (void)
	Disables highlighting in the console output.

Additional Inherited Members
Public Types inherited from FGAtmosphere
enum	ePressure { eNoPressUnit =0, ePSF, eMillibars, ePascals, eInchesHg }
	Enums for specifying pressure units.

enum	eTemperature { eNoTempUnit =0, eFahrenheit, eCelsius, eRankine, eKelvin }
	Enums for specifying temperature units.

Public Types inherited from FGJSBBase
enum	{ eL = 1, eM, eN }
	Moments L, M, N.

enum	{ eP = 1, eQ, eR }
	Rates P, Q, R.

enum	{ eU = 1, eV, eW }
	Velocities U, V, W.

enum	{ eX = 1, eY, eZ }
	Positions X, Y, Z.

enum	{ ePhi = 1, eTht, ePsi }
	Euler angles Phi, Theta, Psi.

enum	{ eDrag = 1, eSide, eLift }
	Stability axis forces, Drag, Side force, Lift.

enum	{ eRoll = 1, ePitch, eYaw }
	Local frame orientation Roll, Pitch, Yaw.

enum	{ eNorth = 1, eEast, eDown }
	Local frame position North, East, Down.

enum	{ eLat = 1, eLong, eRad }
	Locations Radius, Latitude, Longitude.

enum	{ inNone = 0, inDegrees, inRadians, inMeters, inFeet }
	Conversion specifiers.

Static Public Member Functions inherited from FGJSBBase
static const std::string &	GetVersion (void)
	Returns the version number of JSBSim. More...

static constexpr double	KelvinToFahrenheit (double kelvin)
	Converts from degrees Kelvin to degrees Fahrenheit. More...

static constexpr double	CelsiusToRankine (double celsius)
	Converts from degrees Celsius to degrees Rankine. More...

static constexpr double	RankineToCelsius (double rankine)
	Converts from degrees Rankine to degrees Celsius. More...

static constexpr double	KelvinToRankine (double kelvin)
	Converts from degrees Kelvin to degrees Rankine. More...

static constexpr double	RankineToKelvin (double rankine)
	Converts from degrees Rankine to degrees Kelvin. More...

static constexpr double	FahrenheitToCelsius (double fahrenheit)
	Converts from degrees Fahrenheit to degrees Celsius. More...

static constexpr double	CelsiusToFahrenheit (double celsius)
	Converts from degrees Celsius to degrees Fahrenheit. More...

static constexpr double	CelsiusToKelvin (double celsius)
	Converts from degrees Celsius to degrees Kelvin. More...

static constexpr double	KelvinToCelsius (double kelvin)
	Converts from degrees Kelvin to degrees Celsius. More...

static constexpr double	FeetToMeters (double measure)
	Converts from feet to meters. More...

static double	PitotTotalPressure (double mach, double p)
	Compute the total pressure in front of the Pitot tube. More...

static double	MachFromImpactPressure (double qc, double p)
	Compute the Mach number from the differential pressure (qc) and the static pressure. More...

static double	VcalibratedFromMach (double mach, double p)
	Calculate the calibrated airspeed from the Mach number. More...

static double	MachFromVcalibrated (double vcas, double p)
	Calculate the Mach number from the calibrated airspeed.Based on the formulas in the US Air Force Aircraft Performance Flight Testing Manual (AFFTC-TIH-99-01). More...

static bool	EqualToRoundoff (double a, double b)
	Finite precision comparison. More...

static bool	EqualToRoundoff (float a, float b)
	Finite precision comparison. More...

static bool	EqualToRoundoff (float a, double b)
	Finite precision comparison. More...

static bool	EqualToRoundoff (double a, float b)
	Finite precision comparison. More...

static constexpr double	Constrain (double min, double value, double max)
	Constrain a value between a minimum and a maximum value.

static constexpr double	sign (double num)

static double	GaussianRandomNumber (void)

Public Attributes inherited from FGAtmosphere
struct JSBSim::FGAtmosphere::Inputs	in

Static Public Attributes inherited from FGAtmosphere
static constexpr double	StdDaySLtemperature = 518.67

static constexpr double	StdDaySLpressure = 2116.228

static const double	StdDaySLsoundspeed = sqrt(SHRatioRengStdDaySLtemperature)

Static Public Attributes inherited from FGJSBBase
static char	highint [5] = {27, '[', '1', 'm', '\0' }
	highlights text

static char	halfint [5] = {27, '[', '2', 'm', '\0' }
	low intensity text

static char	normint [6] = {27, '[', '2', '2', 'm', '\0' }
	normal intensity text

static char	reset [5] = {27, '[', '0', 'm', '\0' }
	resets text properties

static char	underon [5] = {27, '[', '4', 'm', '\0' }
	underlines text

static char	underoff [6] = {27, '[', '2', '4', 'm', '\0' }
	underline off

static char	fgblue [6] = {27, '[', '3', '4', 'm', '\0' }
	blue text

static char	fgcyan [6] = {27, '[', '3', '6', 'm', '\0' }
	cyan text

static char	fgred [6] = {27, '[', '3', '1', 'm', '\0' }
	red text

static char	fggreen [6] = {27, '[', '3', '2', 'm', '\0' }
	green text

static char	fgdef [6] = {27, '[', '3', '9', 'm', '\0' }
	default text

static short	debug_lvl = 1

Protected Member Functions inherited from FGAtmosphere
virtual void	Calculate (double altitude)
	Calculate the atmosphere for the given altitude.

virtual double	CalculateDensityAltitude (double density, double geometricAlt)
	Calculates the density altitude given any temperature or pressure bias. More...

virtual double	CalculatePressureAltitude (double pressure, double geometricAlt)
	Calculates the pressure altitude given any temperature or pressure bias. More...

double	ConvertToRankine (double t, eTemperature unit) const
	Converts to Rankine from one of several unit systems.

double	ConvertFromRankine (double t, eTemperature unit) const
	Converts from Rankine to one of several unit systems.

double	ConvertToPSF (double t, ePressure unit=ePSF) const
	Converts to PSF (pounds per square foot) from one of several unit systems.

double	ConvertFromPSF (double t, ePressure unit=ePSF) const
	Converts from PSF (pounds per square foot) to one of several unit systems.

virtual void	bind (void)

Protected Member Functions inherited from FGModel
bool	Upload (Element *el, bool preLoad)
	Uploads this model in memory. More...

Static Protected Member Functions inherited from FGJSBBase
static std::string	CreateIndexedPropertyName (const std::string &Property, int index)

Protected Attributes inherited from FGAtmosphere
double	SLtemperature

double	SLdensity

double	SLpressure

double	SLsoundspeed

double	Temperature

double	Density

double	Pressure

double	Soundspeed

double	PressureAltitude

double	DensityAltitude

double	Viscosity

double	KinematicViscosity

Protected Attributes inherited from FGModel
unsigned int	exe_ctr

FGFDMExec *	FDMExec

std::string	Name

FGPropertyManager *	PropertyManager

unsigned int	rate

Protected Attributes inherited from FGModelFunctions
FGPropertyReader	LocalProperties

std::vector< FGFunction * >	PostFunctions

std::vector< FGFunction * >	PreFunctions

Static Protected Attributes inherited from FGAtmosphere
static constexpr double	SutherlandConstant = 198.72

static constexpr double	Beta = 2.269690E-08

static constexpr double	Rstar = 8.31432 * kgtoslug / KelvinToRankine(fttom * fttom)
	Universal gas constant - ft*lbf/R/mol.

static constexpr double	Mair = 28.9645 * kgtoslug / 1000.0
	Mean molecular weight for air - slug/mol.

static constexpr double	g0 = 9.80665 / fttom
	Sea-level acceleration of gravity - ft/s^2. More...

static double	Reng = Rstar / Mair
	Specific gas constant for air - ft*lbf/slug/R.

static constexpr double	SHRatio = 1.4

Static Protected Attributes inherited from FGJSBBase
static Message	localMsg

static std::queue< Message >	Messages

static unsigned int	messageId = 0

static constexpr double	radtodeg = 180. / M_PI

static constexpr double	degtorad = M_PI / 180.

static constexpr double	hptoftlbssec = 550.0

static constexpr double	psftoinhg = 0.014138

static constexpr double	psftopa = 47.88

static constexpr double	ktstofps = 1.68781

static constexpr double	fpstokts = 1.0 / ktstofps

static constexpr double	inchtoft = 1.0/12.0

static constexpr double	fttom = 0.3048

static constexpr double	m3toft3 = 1.0/(fttomfttomfttom)

static constexpr double	in3tom3 = inchtoftinchtoftinchtoft/m3toft3

static constexpr double	inhgtopa = 3386.38

static constexpr double	slugtolb = 32.174049
	Note that definition of lbtoslug by the inverse of slugtolb and not to a different constant you can also get from some tables will make lbtoslug*slugtolb == 1 up to the magnitude of roundoff. More...

static constexpr double	lbtoslug = 1.0/slugtolb

static constexpr double	kgtolb = 2.20462

static constexpr double	kgtoslug = 0.06852168

static const std::string	needed_cfg_version = "2.0"

static const std::string	JSBSim_version = JSBSIM_VERSION " " __DATE__ " " __TIME__

static int	gaussian_random_number_phase = 0

Member Function Documentation

◆ Run()

bool Run ( bool Holding )

virtual

Runs the MSIS-00 atmosphere model; called by the Executive Can pass in a value indicating if the executive is directing the simulation to Hold.

Parameters

Holding if true, the executive has been directed to hold the sim from advancing time. Some models may ignore this flag, such as the Input model, which may need to be active to listen on a socket for the "Resume" command to be given.

Returns: false if no error

Reimplemented from FGAtmosphere.

Definition at line 152 of file FGMSIS.cpp.

 {
   if (FGModel::Run(Holding)) return true;
   if (Holding) return false;
  
   double h = FDMExec->GetPropagate()->GetAltitudeASL();
  
   //do temp, pressure, and density first
   //if (!useExternal) {
     // get sea-level values
     Calculate(FDMExec->GetAuxiliary()->GetDayOfYear(),
               FDMExec->GetAuxiliary()->GetSecondsInDay(),
               0.0,
               FDMExec->GetPropagate()->GetLocation().GetLatitudeDeg(),
               FDMExec->GetPropagate()->GetLocation().GetLongitudeDeg());
     SLtemperature = output.t[1] * 1.8;
     SLdensity     = output.d[5] * 1.940321;
     SLpressure    = 1716.488 * SLdensity * SLtemperature;
     SLsoundspeed  = sqrt(2403.0832 * SLtemperature);
  
     // get at-altitude values
     Calculate(FDMExec->GetAuxiliary()->GetDayOfYear(),
               FDMExec->GetAuxiliary()->GetSecondsInDay(),
               h,
               FDMExec->GetPropagate()->GetLocation().GetLatitudeDeg(),
               FDMExec->GetPropagate()->GetLocation().GetLongitudeDeg());
     //intTemperature = output.t[1] * 1.8;
     //intDensity     = output.d[5] * 1.940321;
     //intPressure    = 1716.488 * intDensity * intTemperature;
     //cout << "T=" << intTemperature << " D=" << intDensity << " P=";
     //cout << intPressure << " a=" << soundspeed << endl;
   //}
  
   Debug(2);
  
   return false;
 }

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The documentation for this class was generated from the following files:

Detailed Description

Public Member Functions

Additional Inherited Members

Member Function Documentation

◆ Run()