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JSBSim::FGRotor Class Reference

Models a helicopter rotor. More...

#include <FGRotor.h>

Inherits JSBSim::FGThruster.

Public Member Functions

 FGRotor (FGFDMExec *exec, Element *rotor_element, int num)
 Constructor for FGRotor.
 
 ~FGRotor ()
 Destructor for FGRotor.
 
double GetPowerRequired (void) const
 Returns the power required by the rotor.
 
double Calculate (double EnginePower)
 Returns the scalar thrust of the rotor, and adjusts the RPM value.
 
double GetRPM (void) const
 Retrieves the RPMs of the rotor.
 
void SetRPM (double rpm)
 
double GetEngineRPM (void) const
 Retrieves the RPMs of the Engine, as seen from this rotor.
 
void SetEngineRPM (double rpm)
 
double GetGearRatio (void)
 Tells the rotor's gear ratio, usually the engine asks for this.
 
double GetThrust (void) const
 Retrieves the thrust of the rotor.
 
double GetA0 (void) const
 Retrieves the rotor's coning angle.
 
double GetA1 (void) const
 Retrieves the longitudinal flapping angle with respect to the rotor shaft.
 
double GetB1 (void) const
 Retrieves the lateral flapping angle with respect to the rotor shaft.
 
double GetLambda (void) const
 Retrieves the inflow ratio.
 
double GetMu (void) const
 Retrieves the tip-speed (aka advance) ratio.
 
double GetNu (void) const
 Retrieves the induced inflow ratio.
 
double GetVi (void) const
 Retrieves the induced velocity.
 
double GetCT (void) const
 Retrieves the thrust coefficient.
 
double GetTorque (void) const
 Retrieves the torque.
 
double GetThetaDW (void) const
 Downwash angle - positive values point forward (given a horizontal spinning rotor)
 
double GetPhiDW (void) const
 Downwash angle - positive values point leftward (given a horizontal spinning rotor)
 
double GetGroundEffectScaleNorm (void) const
 Retrieves the ground effect scaling factor.
 
void SetGroundEffectScaleNorm (double g)
 Sets the ground effect scaling factor.
 
double GetCollectiveCtrl (void) const
 Retrieves the collective control input in radians.
 
double GetLateralCtrl (void) const
 Retrieves the lateral control input in radians.
 
double GetLongitudinalCtrl (void) const
 Retrieves the longitudinal control input in radians.
 
void SetCollectiveCtrl (double c)
 Sets the collective control input in radians.
 
void SetLateralCtrl (double c)
 Sets the lateral control input in radians.
 
void SetLongitudinalCtrl (double c)
 Sets the longitudinal control input in radians.
 
std::string GetThrusterLabels (int id, const std::string &delimeter)
 
std::string GetThrusterValues (int id, const std::string &delimeter)
 
- Public Member Functions inherited from JSBSim::FGThruster
 FGThruster (FGFDMExec *FDMExec, Element *el, int num)
 Constructor.
 
virtual ~FGThruster ()
 Destructor.
 
void SetName (std::string name)
 
virtual double GetPowerRequired (void)
 
double GetThrust (void) const
 
eType GetType (void)
 
std::string GetName (void)
 
void SetReverserAngle (double angle)
 
double GetReverserAngle (void) const
 
double GetGearRatio (void)
 
virtual void ResetToIC (void)
 
- Public Member Functions inherited from JSBSim::FGForce
 FGForce (FGFDMExec *FDMExec)
 Constructor.
 
 FGForce (const FGForce &force)
 
virtual ~FGForce ()
 Destructor.
 
virtual const FGColumnVector3GetBodyForces (void)
 
double GetBodyXForce (void) const
 
double GetBodyYForce (void) const
 
double GetBodyZForce (void) const
 
const FGColumnVector3GetMoments (void) const
 
void SetLocation (double x, double y, double z)
 
void SetActingLocation (double x, double y, double z)
 Acting point of application.
 
void SetLocationX (double x)
 
void SetLocationY (double y)
 
void SetLocationZ (double z)
 
double SetActingLocationX (double x)
 
double SetActingLocationY (double y)
 
double SetActingLocationZ (double z)
 
void SetLocation (const FGColumnVector3 &vv)
 
void SetActingLocation (const FGColumnVector3 &vv)
 
double GetLocationX (void) const
 
double GetLocationY (void) const
 
double GetLocationZ (void) const
 
double GetActingLocationX (void) const
 
double GetActingLocationY (void) const
 
double GetActingLocationZ (void) const
 
const FGColumnVector3GetLocation (void) const
 
const FGColumnVector3GetActingLocation (void) const
 
void SetAnglesToBody (double broll, double bpitch, double byaw)
 
void SetAnglesToBody (const FGColumnVector3 &vv)
 
void UpdateCustomTransformMatrix (void)
 
void SetPitch (double pitch)
 
void SetYaw (double yaw)
 
double GetPitch (void) const
 
double GetYaw (void) const
 
const FGColumnVector3GetAnglesToBody (void) const
 
double GetAnglesToBody (int axis) const
 
void SetTransformType (TransformType ii)
 
TransformType GetTransformType (void) const
 
const FGMatrix33Transform (void) const
 
- 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.
 

Additional Inherited Members

- Public Types inherited from JSBSim::FGThruster
enum  eType { ttNozzle , ttRotor , ttPropeller , ttDirect }
 
- Public Types inherited from JSBSim::FGForce
enum  TransformType { tNone , tWindBody , tLocalBody , tCustom }
 
- 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)
 
- Public Attributes inherited from JSBSim::FGThruster
struct JSBSim::FGThruster::Inputs in
 
- 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)
 
- Protected Attributes inherited from JSBSim::FGThruster
eType Type
 
std::string Name
 
double Thrust
 
double PowerRequired
 
double GearRatio
 
double ThrustCoeff
 
double ReverserAngle
 
int EngineNum
 
- Protected Attributes inherited from JSBSim::FGForce
FGFDMExecfdmex
 
FGMassBalanceMassBalance
 
FGColumnVector3 vFn
 
FGColumnVector3 vMn
 
FGColumnVector3 vOrient
 
TransformType ttype
 
FGColumnVector3 vXYZn
 
FGColumnVector3 vActingXYZn
 
FGMatrix33 mT
 
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 helicopter rotor.

Configuration File Format

<rotor name="{string}">
<diameter unit="{LENGTH}"> {number} </diameter>
<numblades> {number} </numblades>
<gearratio> {number} </gearratio>
<nominalrpm> {number} </nominalrpm>
<minrpm> {number} </minrpm>
<maxrpm> {number} </maxrpm>
<chord unit="{LENGTH}"> {number} </chord>
<liftcurveslope Xunit="1/RAD"> {number} </liftcurveslope>
<twist unit="{ANGLE}"> {number} </twist>
<hingeoffset unit="{LENGTH}"> {number} </hingeoffset>
<flappingmoment unit="{MOMENT}"> {number} </flappingmoment>
<massmoment Xunit="SLUG*FT"> {number} </massmoment>
<polarmoment unit="{MOMENT}"> {number} </polarmoment>
<inflowlag> {number} </inflowlag>
<tiplossfactor> {number} </tiplossfactor>
<maxbrakepower unit="{POWER}"> {number} </maxbrakepower>
<gearloss unit="{POWER}"> {number} </gearloss>
<gearmoment unit="{MOMENT}"> {number} </gearmoment>
<controlmap> {MAIN|TAIL|TANDEM} </controlmap>
<ExternalRPM> {number} </ExternalRPM>
<groundeffectexp> {number} </groundeffectexp>
<groundeffectshift unit="{LENGTH}"> {number} </groundeffectshift>
</rotor>
// LENGTH means any of the supported units, same for ANGLE and MOMENT.
// Xunit-attributes are a hint for currently unsupported units, so
// values must be provided accordingly.
const char * name

Configuration Parameters:

Brief description and the symbol frequently found in the literature.

    <diameter>           - Rotor disk diameter (2x R).
    <numblades>          - Number of blades (b).
    <gearratio>          - Ratio of (engine rpm) / (rotor rpm), usually > 1.
    <nominalrpm>         - RPM at which the rotor usally operates.
    <minrpm>             - Lowest RPM used in the model, optional and defaults to 1.
    <maxrpm>             - Largest RPM used in the model, optional and defaults to 2 x nominalrpm.
    <chord>              - Blade chord, (c).
    <liftcurveslope>     - Slope of curve of section lift against section angle of attack,
                             per rad (a).
    <twist>              - Blade twist from root to tip, (theta_1).
    <hingeoffset>        - Rotor flapping-hinge offset (e).
    <flappingmoment>     - Flapping moment of inertia (I_b).
    <massmoment>         - Blade mass moment. Mass of a single blade times the blade's
                             cg-distance from the hub, optional.
    <polarmoment>        - Moment of inertia for the whole rotor disk, optional.
    <inflowlag>          - Rotor inflow time constant, sec. Smaller values yield to quicker
                              responses (typical values for main rotor: 0.1 - 0.2 s).
    <tiplossfactor>      - Tip-loss factor. The Blade fraction that produces lift.
                              Value usually ranges between 0.95 - 1.0, optional (B).

    <maxbrakepower>      - Rotor brake, 20-30 hp should work for a mid size helicopter.
    <gearloss>           - Friction in gear, 0.2% to 3% of the engine power, optional (see notes).
    <gearmoment>         - Approximation for the moment of inertia of the gear (and engine),
                              defaults to 0.1 * polarmoment, optional.

    <controlmap>         - Defines the control inputs used (see notes).

    <ExternalRPM>        - Links the rotor to another rotor, or an user controllable property.

    Experimental properties

    <groundeffectexp>    - Exponent for ground effect approximation. Values usually range from 0.04
                            for large rotors to 0.1 for smaller ones. As a rule of thumb the effect
                            vanishes at a height 2-3 times the rotor diameter.
                              formula used: exp ( - groundeffectexp * (height+groundeffectshift) )
                            Omitting or setting to 0.0 disables the effect calculation.
    <groundeffectshift>  - Further adjustment of ground effect, approx. hub height or slightly above
                            (This lessens the influence of the ground effect).

Notes:

- Controls -

The behavior of the rotor is controlled/influenced by following inputs.

  • The power provided by the engine. This is handled by the regular engine controls.
  • The collective control input. This is read from the fdm property propulsion/engine[x]/collective-ctrl-rad. See below for tail rotor
  • The lateral cyclic input. Read from propulsion/engine[x]/lateral-ctrl-rad.
  • The longitudinal cyclic input. Read from propulsion/engine[x]/longitudinal-ctrl-rad.
  • The tail rotor collective (aka antitorque, aka pedal) control input. Read from propulsion/engine[x]/antitorque-ctrl-rad or propulsion/engine[x]/tail-collective-ctrl-rad.

- Tail/tandem rotor -

Providing <ExternalRPM> 0 </ExternalRPM> the tail rotor's RPM is linked to to the main (=first, =0) rotor, and specifing <controlmap> TAIL </controlmap> tells this rotor to read the collective input from propulsion/engine[1]/antitorque-ctrl-rad (The TAIL-map ignores lateral and longitudinal input). The rotor needs to be attached to a dummy engine, e.g. an 1HP electrical engine. A tandem rotor is setup analogous.

- Sense -

The 'sense' parameter from the thruster is interpreted as follows, sense=1 means counter clockwise rotation of the main rotor, as viewed from above. This is as a far as I know more popular than clockwise rotation, which is defined by setting sense to -1. Concerning coaxial designs - by setting 'sense' to zero, a Kamov-style rotor is modeled (i.e. the rotor produces no torque).

- Engine issues -

In order to keep the rotor/engine speed constant, use of a RPM-Governor system is encouraged (see examples).

In case the model requires the manual use of a clutch the <gearloss> property might need attention.

  • Electrical: here the gear-loss should be rather large to keep the engine controllable when the clutch is open (although full throttle might still make it spin away).
  • Piston: this engine model already has some internal friction loss and also looses power if it spins too high. Here the gear-loss could be set to 0.25% of the engine power (which is also the approximated default).
  • Turboprop: Here the default value might be a bit too small. Also it's advisable to adjust the power table for rpm values that are far beyond the nominal value.

- Scaling the ground effect -

The property propulsion/engine[x]/groundeffect-scale-norm allows fdm based scaling of the ground effect influence. For instance the effect vanishes at speeds above approx. 50kts, or one likes to land on a 'perforated' helipad.

- Development hints -

Setting <ExternalRPM> -1 </ExternalRPM> the rotor's RPM is controlled by the propulsion/engine[x]/x-rpm-dict property. This feature can be useful when developing a FDM.

References:

<dl>    
<dt>/SH79/</dt><dd>Shaugnessy, J. D., Deaux, Thomas N., and Yenni, Kenneth R.,
          "Development and Validation of a Piloted Simulation of a
          Helicopter and External Sling Load",  NASA TP-1285, 1979.</dd>
<dt>/BA41/</dt><dd>Bailey,F.J.,Jr., "A Simplified Theoretical Method of Determining
          the Characteristics of a Lifting Rotor in Forward Flight", NACA Rep.716, 1941.</dd>
<dt>/AM50/</dt><dd>Amer, Kenneth B.,"Theory of Helicopter Damping in Pitch or Roll and a
          Comparison With Flight Measurements", NACA TN-2136, 1950.</dd>
<dt>/TA77/</dt><dd>Talbot, Peter D., Corliss, Lloyd D., "A Mathematical Force and Moment
          Model of a UH-1H Helicopter for Flight Dynamics Simulations", NASA TM-73,254, 1977.</dd>
<dt>/GE49/</dt><dd>Gessow, Alfred, Amer, Kenneth B. "An Introduction to the Physical 
          Aspects of Helicopter Stability", NACA TN-1982, 1949.</dd>
</dl>

@author Thomas Kreitler

Definition at line 235 of file FGRotor.h.

Constructor & Destructor Documentation

◆ FGRotor()

JSBSim::FGRotor::FGRotor ( FGFDMExec * exec,
Element * rotor_element,
int num )

Constructor for FGRotor.

Parameters
execa pointer to the main executive object
rotor_elementa pointer to the thruster config file XML element
numthe number of this rotor

Definition at line 74 of file FGRotor.cpp.

◆ ~FGRotor()

JSBSim::FGRotor::~FGRotor ( )

Destructor for FGRotor.

Definition at line 220 of file FGRotor.cpp.

Member Function Documentation

◆ Calculate()

double JSBSim::FGRotor::Calculate ( double EnginePower)
virtual

Returns the scalar thrust of the rotor, and adjusts the RPM value.

Reimplemented from JSBSim::FGThruster.

Definition at line 670 of file FGRotor.cpp.

◆ GetA0()

double JSBSim::FGRotor::GetA0 ( void ) const
inline

Retrieves the rotor's coning angle.

Definition at line 270 of file FGRotor.h.

◆ GetA1()

double JSBSim::FGRotor::GetA1 ( void ) const
inline

Retrieves the longitudinal flapping angle with respect to the rotor shaft.

Definition at line 272 of file FGRotor.h.

◆ GetB1()

double JSBSim::FGRotor::GetB1 ( void ) const
inline

Retrieves the lateral flapping angle with respect to the rotor shaft.

Definition at line 274 of file FGRotor.h.

◆ GetCollectiveCtrl()

double JSBSim::FGRotor::GetCollectiveCtrl ( void ) const
inline

Retrieves the collective control input in radians.

Definition at line 300 of file FGRotor.h.

◆ GetCT()

double JSBSim::FGRotor::GetCT ( void ) const
inline

Retrieves the thrust coefficient.

Definition at line 285 of file FGRotor.h.

◆ GetEngineRPM()

double JSBSim::FGRotor::GetEngineRPM ( void ) const
inlinevirtual

Retrieves the RPMs of the Engine, as seen from this rotor.

Reimplemented from JSBSim::FGThruster.

Definition at line 262 of file FGRotor.h.

◆ GetGearRatio()

double JSBSim::FGRotor::GetGearRatio ( void )
inline

Tells the rotor's gear ratio, usually the engine asks for this.

Definition at line 265 of file FGRotor.h.

◆ GetGroundEffectScaleNorm()

double JSBSim::FGRotor::GetGroundEffectScaleNorm ( void ) const
inline

Retrieves the ground effect scaling factor.

Definition at line 295 of file FGRotor.h.

◆ GetLambda()

double JSBSim::FGRotor::GetLambda ( void ) const
inline

Retrieves the inflow ratio.

Definition at line 277 of file FGRotor.h.

◆ GetLateralCtrl()

double JSBSim::FGRotor::GetLateralCtrl ( void ) const
inline

Retrieves the lateral control input in radians.

Definition at line 302 of file FGRotor.h.

◆ GetLongitudinalCtrl()

double JSBSim::FGRotor::GetLongitudinalCtrl ( void ) const
inline

Retrieves the longitudinal control input in radians.

Definition at line 304 of file FGRotor.h.

◆ GetMu()

double JSBSim::FGRotor::GetMu ( void ) const
inline

Retrieves the tip-speed (aka advance) ratio.

Definition at line 279 of file FGRotor.h.

◆ GetNu()

double JSBSim::FGRotor::GetNu ( void ) const
inline

Retrieves the induced inflow ratio.

Definition at line 281 of file FGRotor.h.

◆ GetPhiDW()

double JSBSim::FGRotor::GetPhiDW ( void ) const
inline

Downwash angle - positive values point leftward (given a horizontal spinning rotor)

Definition at line 292 of file FGRotor.h.

◆ GetPowerRequired()

double JSBSim::FGRotor::GetPowerRequired ( void ) const
inline

Returns the power required by the rotor.

Definition at line 251 of file FGRotor.h.

◆ GetRPM()

double JSBSim::FGRotor::GetRPM ( void ) const
inlinevirtual

Retrieves the RPMs of the rotor.

Reimplemented from JSBSim::FGThruster.

Definition at line 258 of file FGRotor.h.

◆ GetThetaDW()

double JSBSim::FGRotor::GetThetaDW ( void ) const
inline

Downwash angle - positive values point forward (given a horizontal spinning rotor)

Definition at line 290 of file FGRotor.h.

◆ GetThrust()

double JSBSim::FGRotor::GetThrust ( void ) const
inline

Retrieves the thrust of the rotor.

Definition at line 267 of file FGRotor.h.

◆ GetThrusterLabels()

string JSBSim::FGRotor::GetThrusterLabels ( int id,
const std::string & delimeter )
virtual

Reimplemented from JSBSim::FGThruster.

Definition at line 788 of file FGRotor.cpp.

◆ GetThrusterValues()

string JSBSim::FGRotor::GetThrusterValues ( int id,
const std::string & delimeter )
virtual

Reimplemented from JSBSim::FGThruster.

Definition at line 801 of file FGRotor.cpp.

◆ GetTorque()

double JSBSim::FGRotor::GetTorque ( void ) const
inline

Retrieves the torque.

Definition at line 287 of file FGRotor.h.

◆ GetVi()

double JSBSim::FGRotor::GetVi ( void ) const
inline

Retrieves the induced velocity.

Definition at line 283 of file FGRotor.h.

◆ SetCollectiveCtrl()

void JSBSim::FGRotor::SetCollectiveCtrl ( double c)
inline

Sets the collective control input in radians.

Definition at line 307 of file FGRotor.h.

◆ SetEngineRPM()

void JSBSim::FGRotor::SetEngineRPM ( double rpm)
inlinevirtual

Reimplemented from JSBSim::FGThruster.

Definition at line 263 of file FGRotor.h.

◆ SetGroundEffectScaleNorm()

void JSBSim::FGRotor::SetGroundEffectScaleNorm ( double g)
inline

Sets the ground effect scaling factor.

Definition at line 297 of file FGRotor.h.

◆ SetLateralCtrl()

void JSBSim::FGRotor::SetLateralCtrl ( double c)
inline

Sets the lateral control input in radians.

Definition at line 309 of file FGRotor.h.

◆ SetLongitudinalCtrl()

void JSBSim::FGRotor::SetLongitudinalCtrl ( double c)
inline

Sets the longitudinal control input in radians.

Definition at line 311 of file FGRotor.h.

◆ SetRPM()

void JSBSim::FGRotor::SetRPM ( double rpm)
inlinevirtual

Reimplemented from JSBSim::FGThruster.

Definition at line 259 of file FGRotor.h.


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