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JSBSim::FGBallonet Class Reference

Models a ballonet inside a gas cell. More...

#include <FGGasCell.h>

Inherits JSBSim::FGJSBBase.

Public Member Functions

 FGBallonet (FGFDMExec *exec, Element *el, unsigned int num, FGGasCell *parent, const struct FGGasCell::Inputs &input)
 
 ~FGBallonet ()
 
void Calculate (double dt)
 Runs the ballonet model; called by FGGasCell.
 
const FGColumnVector3GetXYZ (void) const
 Get the center of gravity location of the ballonet.
 
double GetXYZ (int idx) const
 Get the center of gravity location of the ballonet.
 
double GetMass (void) const
 Get the current mass of the ballonets.
 
const FGMatrix33GetInertia (void) const
 Get the moments of inertia of the ballonet.
 
double GetVolume (void) const
 Get the current volume of the ballonet.
 
double GetHeatFlow (void) const
 Get the current heat flow into the ballonet.
 
- Public Member Functions inherited from JSBSim::FGJSBBase
 FGJSBBase ()
 Constructor for FGJSBBase.
 
virtual ~FGJSBBase ()
 Destructor for FGJSBBase.
 
void PutMessage (const Message &msg)
 Places a Message structure on the Message queue.
 
void PutMessage (const std::string &text)
 Creates a message with the given text and places it on the queue.
 
void PutMessage (const std::string &text, bool bVal)
 Creates a message with the given text and boolean value and places it on the queue.
 
void PutMessage (const std::string &text, int iVal)
 Creates a message with the given text and integer value and places it on the queue.
 
void PutMessage (const std::string &text, double dVal)
 Creates a message with the given text and double value and places it on the queue.
 
int SomeMessages (void) const
 Reads the message on the queue (but does not delete it).
 
void ProcessMessage (void)
 Reads the message on the queue and removes it from the queue.
 
MessageProcessNextMessage (void)
 Reads the next message on the queue and removes it from the queue.
 
void disableHighLighting (void)
 Disables highlighting in the console output.
 

Public Attributes

const struct FGGasCell::Inputsin
 

Additional Inherited Members

- Public Types inherited from JSBSim::FGJSBBase
enum  { eL = 1 , eM , eN }
 Moments L, M, N. More...
 
enum  { eP = 1 , eQ , eR }
 Rates P, Q, R. More...
 
enum  { eU = 1 , eV , eW }
 Velocities U, V, W. More...
 
enum  { eX = 1 , eY , eZ }
 Positions X, Y, Z. More...
 
enum  { ePhi = 1 , eTht , ePsi }
 Euler angles Phi, Theta, Psi. More...
 
enum  { eDrag = 1 , eSide , eLift }
 Stability axis forces, Drag, Side force, Lift. More...
 
enum  { eRoll = 1 , ePitch , eYaw }
 Local frame orientation Roll, Pitch, Yaw. More...
 
enum  { eNorth = 1 , eEast , eDown }
 Local frame position North, East, Down. More...
 
enum  { eLat = 1 , eLong , eRad }
 Locations Radius, Latitude, Longitude. More...
 
enum  {
  inNone = 0 , inDegrees , inRadians , inMeters ,
  inFeet
}
 Conversion specifiers. More...
 
static const std::string & GetVersion (void)
 Returns the version number of JSBSim.
 
static constexpr double KelvinToFahrenheit (double kelvin)
 Converts from degrees Kelvin to degrees Fahrenheit.
 
static constexpr double CelsiusToRankine (double celsius)
 Converts from degrees Celsius to degrees Rankine.
 
static constexpr double RankineToCelsius (double rankine)
 Converts from degrees Rankine to degrees Celsius.
 
static constexpr double KelvinToRankine (double kelvin)
 Converts from degrees Kelvin to degrees Rankine.
 
static constexpr double RankineToKelvin (double rankine)
 Converts from degrees Rankine to degrees Kelvin.
 
static constexpr double FahrenheitToCelsius (double fahrenheit)
 Converts from degrees Fahrenheit to degrees Celsius.
 
static constexpr double CelsiusToFahrenheit (double celsius)
 Converts from degrees Celsius to degrees Fahrenheit.
 
static constexpr double CelsiusToKelvin (double celsius)
 Converts from degrees Celsius to degrees Kelvin.
 
static constexpr double KelvinToCelsius (double kelvin)
 Converts from degrees Kelvin to degrees Celsius.
 
static constexpr double FeetToMeters (double measure)
 Converts from feet to meters.
 
static double PitotTotalPressure (double mach, double p)
 Compute the total pressure in front of the Pitot tube.
 
static double MachFromImpactPressure (double qc, double p)
 Compute the Mach number from the differential pressure (qc) and the static pressure.
 
static double VcalibratedFromMach (double mach, double p)
 Calculate the calibrated airspeed from the Mach number.
 
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).
 
static bool EqualToRoundoff (double a, double b)
 Finite precision comparison.
 
static bool EqualToRoundoff (float a, float b)
 Finite precision comparison.
 
static bool EqualToRoundoff (float a, double b)
 Finite precision comparison.
 
static bool EqualToRoundoff (double a, float b)
 Finite precision comparison.
 
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)
 
- Static Public Attributes inherited from JSBSim::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
 
static std::string CreateIndexedPropertyName (const std::string &Property, int index)
 
static Message localMsg
 
static std::queue< MessageMessages
 
static unsigned int messageId = 0
 
static constexpr double radtodeg = 180. / 3.14159265358979323846
 
static constexpr double degtorad = 3.14159265358979323846 / 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/(fttom*fttom*fttom)
 
static constexpr double in3tom3 = inchtoft*inchtoft*inchtoft/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.
 
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
 

Detailed Description

Models a ballonet inside a gas cell.

Not intended to be used outside FGGasCell. See FGGasCell for the configuration file format.

Author
Anders Gidenstam

Definition at line 302 of file FGGasCell.h.

Constructor & Destructor Documentation

◆ FGBallonet()

JSBSim::FGBallonet::FGBallonet ( FGFDMExec * exec,
Element * el,
unsigned int num,
FGGasCell * parent,
const struct FGGasCell::Inputs & input )

Definition at line 499 of file FGGasCell.cpp.

◆ ~FGBallonet()

JSBSim::FGBallonet::~FGBallonet ( )

Definition at line 666 of file FGGasCell.cpp.

Member Function Documentation

◆ Calculate()

void JSBSim::FGBallonet::Calculate ( double dt)

Runs the ballonet model; called by FGGasCell.

Definition at line 681 of file FGGasCell.cpp.

◆ GetHeatFlow()

double JSBSim::FGBallonet::GetHeatFlow ( void ) const
inline

Get the current heat flow into the ballonet.

Returns
heat flow in lbs ft / sec.

Definition at line 335 of file FGGasCell.h.

◆ GetInertia()

const FGMatrix33 & JSBSim::FGBallonet::GetInertia ( void ) const
inline

Get the moments of inertia of the ballonet.

Returns
moments of inertia matrix in the body frame in slug ft2.

Definition at line 328 of file FGGasCell.h.

◆ GetMass()

double JSBSim::FGBallonet::GetMass ( void ) const
inline

Get the current mass of the ballonets.

Returns
mass in slug.

Definition at line 323 of file FGGasCell.h.

◆ GetVolume()

double JSBSim::FGBallonet::GetVolume ( void ) const
inline

Get the current volume of the ballonet.

Returns
volume in ft3.

Definition at line 332 of file FGGasCell.h.

◆ GetXYZ() [1/2]

double JSBSim::FGBallonet::GetXYZ ( int idx) const
inline

Get the center of gravity location of the ballonet.

Returns
CoG location in the structural frame in inches.

Definition at line 319 of file FGGasCell.h.

◆ GetXYZ() [2/2]

const FGColumnVector3 & JSBSim::FGBallonet::GetXYZ ( void ) const
inline

Get the center of gravity location of the ballonet.

Returns
CoG location in the structural frame in inches.

Definition at line 316 of file FGGasCell.h.

Member Data Documentation

◆ in

const struct FGGasCell::Inputs& JSBSim::FGBallonet::in

Definition at line 337 of file FGGasCell.h.


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