Aircraft Engine Variables
The table below indicates the properties for the Simulation Variables that can be used to get and set properties related to the engines of an aircraft. For information on the units listed for each variable, please see here: Simulation Variable Units
You can find a complete index of all available SimVars here: SimVar Index
NOTE
Many of the SimVars listed here require an engine index. This is a value between 1 and 16 that signals which of the engines on the aircraft is being targeted to get or set the value for the SimVar. In addition, some SimVars will let you supply the value 0 to target all engines (this should be stated in the SimVar description).
| Simulation Variable | Index | Description | Units | Settable |
|---|---|---|---|---|
BLEED AIR ENGINE | Engine Index | Returns whether or not the indexed engine💡︎ attempts to provide bleed air. | Bool | |
BLEED AIR SOURCE CONTROL | Engine Index | The bleed air system source controller for an indexed engine💡︎. This will work as follows:When engines and APU are activated, it will return 0 because it is in Auto.If the APU is removed, it will return 3 for engines only.If instead the engines are removed, it would return 2 for the APU only.If the APU and engines are removed, it would return 1 (so, off). | Enum:0 = auto1 = off2 = apu3 = engines | |
COWL FLAPS | N/A | Deprecated, do not use! | Percent Over 100 | |
ENGINE CONTROL SELECT | N/A | Selected engines (combination of bit flags) | Flags:1 = Engine 12 = Engine 24 = Engine 38 = Engine 4 | |
ENGINE MIXURE AVAILABLE | N/A | TRUE if engine mixture is available for prop engines.Deprecated, do not use (mixture is always available)! | Bool | |
ENGINE PRIMER | Engine Index | The engine primer position.Deprecated, do not use! | Position | |
ENGINE TYPE | N/A | Engine type. | Enum:0 = Piston1 = Jet2 = None3 = Helo(Bell) turbine4 = Unsupported5 = Turboprop6 = Electric | |
ENG ANTI ICE | Engine Index | Anti-ice switch for the indexed engine💡︎, TRUE if enabled FALSE otherwise. | Bool | |
ENG COMBUSTION | Engine Index | TRUE if the indexed engine💡︎ is running, FALSE otherwise. | Bool | |
ENG CYLINDER HEAD TEMPERATURE | Engine Index | The indexed engine💡︎ cylinder head temperature. | Rankine | |
ENG EXHAUST GAS TEMPERATURE | Engine Index | Exhaust gas temperature for the indexed engine💡︎. | Rankine | |
ENG EXHAUST GAS TEMPERATURE GES | Engine Index | Governed engine setting exhaust gas temperature for the indexed engine💡︎. | Percent Over 100 | |
ENG FAILED | Engine Index | Failure flag for the indexed engine💡︎ that has failed. | Bool | |
ENG FUEL FLOW BUG POSITION | Engine Index | Fuel flow reference in pounds per hour for the indexed engine💡︎. | Pounds per hour | |
ENG FUEL FLOW GPH | Engine Index | Engine fuel flow in gallons per hour for the indexed engine💡︎. | Gallons per hour | |
ENG FUEL FLOW PPH | Engine Index | The indexed engine💡︎ fuel flow in pounds per hour. | Pounds per hour | |
ENG FUEL FLOW PPH SSL | Engine Index | Engine fuel flow in pounds per hour.Deprecated in favour of ENG FUEL FLOW PPH. | Pounds per hour | |
ENG HYDRAULIC PRESSURE | Engine Index | The indexed engine💡︎ hydraulic pressure. This SimVar is for use with the legacy [HYDRAULIC_SYSTEM] .Note that this will still work for the current modular hydraulics system, but will require a name instead of an index as it simply replicates the [HYDRAULIC PUMP PRESSURE](#HYDRAULIC PUMP PRESSURE) SimVar. | Pounds per square foot (psf) | |
ENG HYDRAULIC QUANTITY | Engine Index | The indexed engine💡︎hydraulic fluid quantity, as a percentage of total capacity. This SimVar is only for use with the legacy [HYDRAULIC_SYSTEM] . | Percent Over 100 | |
ENG MANIFOLD PRESSURE | Engine Index | The indexed engine💡︎ manifold pressure. | Inches of mercury (inHg) | |
ENG MAX RPM | Engine Index | The indexed engine💡︎ Maximum rpm. | RPM | |
ENG N1 RPM | Engine Index | The indexed engine💡︎ N1 rpm. | RPM(0 to 16384 = 0 to 100%) | |
ENG N2 RPM | Engine Index | The indexed engine💡︎ N2 rpm. | RPM(0 to 16384 = 0 to 100%) | |
ENG OIL PRESSURE | Engine Index | The indexed engine💡︎ oil pressure. | pounds per square foot (psf) | |
ENG OIL QUANTITY | Engine Index | The indexed engine💡︎ oil quantity as a percentage of full capacity. | Percent Over 100 | |
ENG OIL TEMPERATURE | Engine Index | The indexed engine💡︎ oil temperature. | Rankine | |
ENG ON FIRE | Engine Index | The indexed engine💡︎ on fire state. | Bool | |
ENG PRESSURE RATIO | Engine Index | The indexed engine💡︎ pressure ratio. | Ratio(0-16384) | |
ENG PRESSURE RATIO GES | Engine Index | Engine pressure ratio. Deprecated, do not use! | Scalar | |
ENG RPM ANIMATION PERCENT | Engine Index | The indexed engine💡︎ percentage maximum rated rpm - used for visual animation.NOTE: This is available in multiplayer to all near aircraft. See here for more information: Note On SimVars In Multiplayer. | Percent | |
ENG RPM SCALER | Engine Index | RPM scalar value. Deprecated, do not use! | Scalar | |
ENG TILT PITCH | Engine Index | This represent the indexed engine💡︎ pitch angle relative to it’s base orientation, in radians. Values here are clamped between the minimum and maximum values given by the TiltMinAngles.N) and TiltMinAngles.N) parameters. | Radians | |
ENG TILT PITCH PERCENT | Engine Index | This is the indexed engine💡︎ pitch angle expressed as a +/- Percent Over 100 between the minimum and maximum values given by the TiltMinAngles.N) and TiltMinAngles.N) parameters.The values -1.0 to 0.0 are the from the minimum angle to 0, and the values 0.0 to 1.0 are from 0 to the maximum angle. | Percent Over 100 | |
ENG TILT PITCH PERCENT EX1 | Engine Index | This is the indexed engine💡︎ pitch angle expressed as a +/- Percent Over 100 between the minimum and maximum values given by the TiltMinAngles.N) and TiltMinAngles.N) parameters.Here the 0.0 value is the minimum angle, and 1.0 is the maximum angle, meaning that a value of 0.5 is not 0 radians, but will be the 50% position between the minimum and maximum radians. | Percent Over 100 | |
ENG TILT YAW | Engine Index | This represent the indexed engine💡︎ yaw angle relative to it’s base orientation, in radians. Values here are clamped between the minimum and maximum values given by the TiltMinAngles.N) and TiltMinAngles.N) parameters. | Radians | |
ENG TILT YAW PERCENT | Engine Index | This is the indexed engine💡︎ yaw angle expressed as a Percent Over 100 between the minimum and maximum values given by the TiltMinAngles.N) and TiltMinAngles.N) parameters.The values -1.0 to 0.0 are the from the minimum angle to 0, and the values 0.0 to 1.0 are from 0 to the maximum angle. | Percent Over 100 | |
ENG TILT YAW PERCENT EX1 | Engine Index | This is the indexed engine💡︎ yaw angle expressed as a +/- Percent Over 100 between the minimum and maximum values given by the TiltMinAngles.N) and TiltMinAngles.N) parameters.Here the 0.0 value is the minimum angle, and 1.0 is the maximum angle, meaning that a value of 0.5 is not 0 radians, but will be the 50% position between the minimum and maximum radians. | Percent Over 100 | |
ENG TORQUE | Engine Index | The indexed engine torque💡︎ . | Foot pounds | |
ENG VIBRATION | Engine Index | The indexed engine💡︎ vibration. | Number | |
ESTIMATED FUEL FLOW | Engine Index | Estimated fuel flow to the indexed engine💡︎ at cruise speed. | Pounds per hour | |
FULL THROTTLE THRUST TO WEIGHT RATIO | N/A | Full throttle thrust to weight ratio | Number | |
GENERAL ENG ANTI ICE POSITION | Engine Index | The indexed engine💡︎ anti-ice switch state - 0 (FALSE) is off and 1 (TRUE) is on. | Bool | |
GENERAL ENG COMBUSTION | Engine Index | Set the indexed engine💡︎ combustion flag to TRUE or FALSE. Note that this will not only stop all combustion, but it will also set the engine RPM to 0, regardless of the actual state of the simulation.NOTE: This is available in multiplayer to all far aircraft. See here for more information: Note On SimVars In Multiplayer. | Bool | |
GENERAL ENG COMBUSTION EX1 | Engine Index | This SimVar is similar to GENERAL ENG COMBUSTION, in that it can be used to enable or disable combustion on an indexed engine💡︎.This SimVar will not interfere with the current state of the simulation. For example, if the aircraft has a turbine engine with auto_ignition enabled or it’s a propeller engine with magnetos, then in the subsequent simulation frames this SimVar may be set to 1 (TRUE) again as the engine restarts automatically. | Bool | |
GENERAL ENG COMBUSTION SOUND PERCENT | Engine Index | Percent of maximum sound being created by the indexed engine💡︎.NOTE: This is available in multiplayer to all far aircraft. See here for more information: Note On SimVars In Multiplayer. | Percent | |
GENERAL ENG DAMAGE PERCENT | Engine Index | Percent of total damage to the indexed engine💡︎. | Percent | |
GENERAL ENG ELAPSED TIME | Engine Index | Total elapsed time since the indexed engine💡︎ was started. | Hours | |
GENERAL ENG EXHAUST GAS TEMPERATURE | Engine Index | The indexed engine💡︎ exhaust gas temperature. | Rankine | |
GENERAL ENG FAILED | Engine Index | The indexed engine💡︎ fail flag. | Bool | |
GENERAL ENG FIRE DETECTED | Engine Index | Detects if a fire has been detected in an indexed engine💡︎ or not. If 0 (FALSE) no fire has been detected and if 1 (TRUE) then it has.No longer used in the simulation. | Bool | |
GENERAL ENG FUEL PRESSURE | Engine Index | The indexed engine💡︎ fuel pressure. | Pounds per square inch (psi) | |
GENERAL ENG FUEL PUMP ON | Engine Index | Whether the indexed engine💡︎ fuel pump on (1, TRUE) or off (0, FALSE). | Bool | |
GENERAL ENG FUEL PUMP SWITCH | Engine Index | Fuel pump switch state the indexed engine💡︎. If 0 (FALSE) the pump is off and if 1 (TRUE) then it is on. | Bool | |
GENERAL ENG FUEL PUMP SWITCH EX1 | Engine Index | Equivalent to GENERAL ENG FUEL PUMP SWITCH but differentiates between ON and AUTO | Bool | |
GENERAL ENG FUEL USED SINCE START | Engine Index | Fuel used since the indexed engine💡︎ was last started. | Pounds | |
GENERAL ENG FUEL VALVE | Engine Index | Fuel valve state for the indexed engine💡︎. If 0 (FALSE) then the valve is closed and if 1 (TRUE) then it is open. | Bool | |
GENERAL ENG GENERATOR ACTIVE | Engine Index | Settable alternator (generator) on/off switch for the indexed engine💡︎. | Bool | |
GENERAL ENG GENERATOR SWITCH | Engine Index | Alternator (generator) on/off switch state for the indexed engine💡︎. | Bool | |
GENERAL ENG HOBBS ELAPSED TIME | Engine Index | This can be used to find the time since the indexed engine💡︎ started running. This records the time the engine has been running, but instead of taking a % of the time based on the Pct/RPM this takes the full time, but only if a threshold RPM/speed is reached. You can set the thresholds using the accumulated_time_hobbs_min_pct_rpm and accumulated_time_hobbs_min_knots parameters in the [GENERALENGINEDATA] section of the engines.cfg file. | Seconds | |
GENERAL ENG MASTER ALTERNATOR | Engine Index | The alternator switch for a specific engine. Requires an engine index (1 - 4) when used. | Bool | |
GENERAL ENG MAX REACHED RPM | Engine Index | Maximum attained rpm for the indexed engine💡︎. | RPM | |
GENERAL ENG MIXTURE LEVER POSITION | Engine Index | Percent of max mixture lever position for the indexed engine💡︎. | Percent | |
GENERAL ENG OIL LEAKED PERCENT | Engine Index | Percent of max oil capacity leaked for the indexed engine💡︎. | Percent | |
GENERAL ENG OIL PRESSURE | Engine Index | The indexed engine💡︎ oil pressure. | Psf | |
GENERAL ENG OIL TEMPERATURE | Engine Index | The indexed engine💡︎ oil temperature. | Rankine | |
GENERAL ENG PCT MAX RPM | Engine Index | Percent of max rated rpm for the indexed engine💡︎.NOTE: This is available in multiplayer to all far aircraft. See here for more information: Note On SimVars In Multiplayer. | Percent | |
GENERAL ENG PROPELLER LEVER POSITION | Engine Index | Percent of max prop lever position for the indexed engine💡︎. | Percent | |
GENERAL ENG REVERSE THRUST ENGAGED | Engine Index | This will return 1 (TRUE) if the reverse thruster is engaged, or 0 (FALSE) otherwise. | Bool | |
GENERAL ENG RPM | Engine Index | The RPM for an indexed engine💡︎.NOTE: This is available in multiplayer to all far aircraft. See here for more information: Note On SimVars In Multiplayer. | RPM | |
GENERAL ENG STARTER | Engine Index | The indexed engine💡︎ starter on/off state. | Bool | |
GENERAL ENG STARTER ACTIVE | Engine Index | TRUE if the indexed engine💡︎ starter is active.NOTE: This is available in multiplayer to all near aircraft. See here for more information: Note On SimVars In Multiplayer. | Bool | |
GENERAL ENG THROTTLE LEVER POSITION | Engine Index | Percent of max throttle position for the indexed engine💡︎. | Percent | |
GENERAL ENG THROTTLE MANAGED MODE | Engine Index | Current mode of the managed throttle for the indexed engine💡︎. | Number | |
MASTER IGNITION SWITCH | N/A | Aircraft master ignition switch (grounds all engines magnetos). | Bool | |
MAX EGT | N/A | The maximum EGT, as set using the egt_peak_temperature parameter in the engines.cfg file. | Rankine | |
MAX OIL TEMPERATURE | N/A | The maximum oil temperature, as set using the parameter oil_temp_heating_constant in the engines.cfg file. | Rankine | |
MAX RATED ENGINE RPM | Engine Index | Maximum rated rpm for the indexed engine💡︎. | RPM | |
NUMBER OF ENGINES | Number of engines (minimum 0, maximum 4) | Number | ||
OIL AMOUNT | Engine Index | Deprecated, do not use! | FS7 Oil Quantity(Deprecated) | |
PANEL AUTO FEATHER SWITCH | Engine Index | Auto-feather arming switch for the indexed engine💡︎. Please see the for more information. | Bool | |
PROP AUTO CRUISE ACTIVE | Engine Index | TRUE if prop auto cruise active | Bool | |
PROP AUTO FEATHER ARMED | Engine Index | Auto-feather armed state for the indexed engine💡︎. | Bool | |
PROP BETA | Engine Index | The “prop beta” is the pitch of the blades of the propeller, and this can be used to retrieve the current pitch setting, per indexed engine💡︎. | Radians | |
PROP BETA FORCED ACTIVE | Engine Index | This can be used to enable the propeller forced beta mode (1, TRUE) or disable it (0, FALSE), when being written to. When being read from, it will return TRUE (1) if the forced beta mode is enabled or FALSE (0) if it isn’t. When enabled, the PROP BETA FORCED POSITION value will be used to drive the prop beta, while the internal coded simulation logic is used when this is disabled. | Bool | |
PROP BETA FORCED POSITION | Engine Index | Get or set the target beta to which the prop is forced. This value will be approximated during the simulation at a rate of 5°/second. Note that this “forcing” will respect the beta_max limit (but will ignore the beta_min).Only valid when PROP BETA FORCED ACTIVE is TRUE (1). | Radians | |
PROP BETA MAX | N/A | The “prop beta” is the pitch of the blades of the propeller. This retrieves the maximum possible pitch value for all engines. | Radians | |
PROP BETA MIN | N/A | The “prop beta” is the pitch of the blades of the propeller. This retrieves the minimum possible pitch value for all engines. | Radians | |
PROP BETA MIN REVERSE | N/A | The “prop beta” is the pitch of the blades of the propeller. This retrieves the minimum possible pitch value when the propeller is in reverse for all engines. | Radians | |
PROP DEICE SWITCH | Engine Index | TRUE if prop deice switch on for the indexed engine💡︎. | Bool | |
PROP FEATHERED | Engine Index | This will return the feathered state of the propeller for an indexed engine💡︎. The state is either feathered (TRUE) or not (FALSE). | Bool | |
PROP FEATHERING INHIBIT | Engine Index | Feathering inhibit flag for the indexed engine💡︎. | Bool | |
PROP FEATHER SWITCH | Engine Index | Prop feather switch for the indexed engine💡︎. | Bool | |
PROP LOCK | Engine Index | Returns whether the indexed engine💡︎ propeller is locked (TRUE) or not (FALSE). | Bool | |
PROP MAX RPM PERCENT | Engine Index | Percent of max rated rpm for the indexed engine💡︎.NOTE: This is available in multiplayer to all near aircraft. See here for more information: Note On SimVars In Multiplayer. | Percent | |
PROP ROTATION ANGLE | N/A | Prop rotation angle.NOTE: This is available in multiplayer to all near aircraft. See here for more information: Note On SimVars In Multiplayer. | Radians | |
PROP RPM | Engine Index | Propeller rpm for the indexed engine💡︎. | RPM | |
PROP SYNC ACTIVE | Engine Index | TRUE if prop sync is active the indexed engine💡︎. | Bool | |
PROP SYNC DELTA LEVER | Engine Index | Corrected prop correction input on slaved engine for the indexed engine💡︎. | Position | |
PROP THRUST | Engine Index | Propeller thrust for the indexed💡︎ engine. The value returned by this SimVar will depend on the prop_mod_version parameter, where:Version < 2: the value will be calculated using the legacy propeller simulation.Version >= 2**: the value will be calculated using the modern propeller simulation.NOTE: This is available in multiplayer to all near aircraft. See here for more information: Note On SimVars In Multiplayer. | Pounds | |
PROPELLER ADVANCED SELECTION | N/A | Deprecated, do not use! | Enum | |
SHUTOFF VALVE PULLED | N/A | This checks if the shutoff valve to the engine has been pulled (TRUE) or not (FALSE). When pulled piston engines will be blocked from getting any fuel. | Bool | |
STRUCT ENGINE POSITION | Engine Index | The engine position relative to the reference datum position for the aircraft. | Struct XYZ | |
THROTTLE INPUT BLOCKED BY LOWER BOUNDS | Engine Index | Settable boolean triggering the notification for the indexed throttle blocked at the lower bounds when user tries to go past it. When requested with no index parameter, the SimVar will return 1 (TRUE) if any engine index throttle is true. When trying to set the SimVar with no index, then all engine throttles will be set to the specified value. | Bool | |
THROTTLE INPUT BLOCKED BY UPPER BOUNDS | Engine Index | Settable boolean triggering the notification for the throttle blocked at the upper bounds when user tries to go past it. When requested with no index parameter, the SimVar will return 1 (TRUE) if any engine index throttle is true. When trying to set the SimVar with no index, then all engine throttles will be set to the specified value. | Bool | |
THROTTLE LOWER LIMIT | N/A | Percent throttle defining lower limit (negative for reverse thrust equipped airplanes). | Percent | |
TURB ENG AFTERBURNER | Engine Index | Afterburner state for the indexed engine💡︎.NOTE: This is available in multiplayer to all near aircraft. See here for more information: Note On SimVars In Multiplayer. | Bool | |
TURB ENG AFTERBURNER PCT ACTIVE | Engine Index | The percentage that the afterburner is running at.NOTE: This is available in multiplayer to all near aircraft. See here for more information: Note On SimVars In Multiplayer. | Percent Over 100 | |
TURB ENG AFTERBURNER STAGE ACTIVE | Engine Index | The stage of the afterburner, or 0 if the afterburner is not active.NOTE: This is available in multiplayer to all near aircraft. See here for more information: Note On SimVars In Multiplayer. | Number | |
TURB ENG ANIMATION RPM | Engine Index | This returns an extrapolated RPM value for the indexed engine which is used to drive the turbine animation model behaviour template. This value is calculated as:$$\frac{N_1}{100} \times \textrm{N1\_100pc\_rpm}$$If the N1_100pc_rpm is not defined, then the SimVar will return the GENERAL ENG RPM value. | RPM | |
TURB ENG BLEED AIR | Engine Index | Bleed air pressure for the indexed engine💡︎. | Pounds per square inch (psi) | |
TURB ENG COMMANDED N1 | Engine Index | Effective commanded N1 for the indexed turbine engine💡︎. The way this value is calculated will depend on the following:For a jet engine the calculation depends on the use_commanded_Ne_table parameter:   - If TRUE, the return value is calculated depending on use_n2_to_n1_table, commanded Ne and inlet Mach.   - If FALSE, the return value is equal to commanded Ne.For a turbo-prop or helo-turbine engine the return value is calculated depending on throttle position and mixture control. | Percent | |
TURB ENG CONDITION LEVER POSITION | Engine Index | When the throttle is on idle position, this sets the condition levers to one of 3 positions to define the idle N1 target for the indexed engine💡︎:Down position is the cut-off position that cuts the fuel to the engine, effectively shutting down the engine.Middle position requires N1 to reach the low idle value when throttle is in idle position (low idle value can be checked using the TURB ENG LOW IDLE SimVar).High position requires N1 to reach the high idle value when throttle is in idle position (high idle value can be checked using the TURB ENG HIGH IDLE SimVar).Note that this option requires several settings from the engines.cfg file to be set to specific values before working correctly:DisableMixtureControls needs to be set to 1 (TRUE).tp_idle_range should be set to 0 (since there is no mixture setting) and idle_high_fuel_flow must be set to 0 (since there is no mixture setting to induce a variation between the 2).high_idle_n1 should be correctly set. | Enum:0 = fuel cut-off1 = low idle2 = high idle | |
TURB ENG CORRECTED FF | Engine Index | Corrected fuel flow for the indexed engine💡︎. | Pounds per hour | |
TURB ENG CORRECTED N1 | Engine Index | The indexed turbine engine💡︎ corrected N1. | Percent | |
TURB ENG CORRECTED N2 | Engine Index | The indexed turbine engine💡︎ corrected N2. | Percent | |
TURB ENG FREE TURBINE TORQUE | Engine Index | The amount of free torque for the indexed turbine engine💡︎. | Foot Pound | |
TURB ENG FUEL AVAILABLE | Engine Index | TRUE if fuel is available for the indexed engine💡︎. | Bool | |
TURB ENG FUEL EFFICIENCY LOSS | Engine Index | This is used to control the fuel efficiency loss of the indexed engine, from 0 - no fuel efficiency loss - to 100 - double the fuel consumption. | Percent | |
TURB ENG FUEL FLOW PPH | Engine Index | The indexed engine💡︎ fuel flow rate. | Pounds per hour | |
TURB ENG HIGH IDLE | Engine Index | Retrieves the high idle N1 value to be reached by the the indexed turboprop engine💡︎ with throttle in idle position and condition lever in high idle position (condition lever position can be checked or set using the TURB ENG CONDITION LEVER POSITION SimVar). | Percent | |
TURB ENG IGNITION SWITCH | Engine Index | TRUE if the the indexed turbine engine💡︎ ignition switch is on. | Bool | |
TURB ENG IGNITION SWITCH EX1 | Engine Index | Position of the the indexed turbine engine💡︎ Ignition Switch. Similar to TURB ENG IGNITION SWITCH but differentiates between ON and AUTO. | Enum:0 = OFF1 = AUTO2 = ON | |
TURB ENG INLET TEMPERATURE | Engine Index | This SimVar exposes the value of the total temperature at the engine inlet, calculated as:$$\textrm{total\_temperature} = OAT \times (1 + 0.2 \times M^2)$$Where:\(OAT\) is the outside (ambient) air temperature in Rankine.\(M\) is defined as:   - Aircraft Mach number when supersonic_inlet is 1 (TRUE).   - Inlet Mach number when supersonic_inlet is 0 (FALSE) | Rankine | |
TURB ENG IS IGNITING | Engine Index | Whether or not the ignition system is currently running for the indexed engine💡︎. Depends on TURB ENG IGNITION SWITCH EX1 Enum, the engine.cfg parameter ignition_auto_type, and the current state of the plane. | Bool | |
TURB ENG ITT | Engine Index | Retrieve or set the ITT for the indexed engine💡︎. | Rankine | |
TURB ENG ITT COOLING EFFICIENCY LOSS | Engine Index | This is used to control the ITT cooling efficiency loss of the indexed engine, from 0 - no cooling efficiency loss - to 100 -engine recieves no ITT cooling. | Percent | |
TURB ENG JET THRUST | Engine Index | The indexed engine💡︎ jet thrust. | Pounds | |
TURB ENG LOW IDLE | Engine Index | Retrieves the low idle N1 value to be reached by the the indexed turboprop engine💡︎ with throttle in idle position and condition lever in low idle position (condition lever position can be checked or set using the TURB ENG CONDITION LEVER POSITION SimVar). | Percent | |
TURB ENG MASTER STARTER SWITCH | Engine Index | TRUE if the turbine engine master starter switch is on, FALSE otherwise. | Bool | |
TURB ENG MAX TORQUE PERCENT | Engine Index | Percent of max rated torque for the indexed engine💡︎. | Percent | |
TURB ENG N1 | Engine Index | The indexed turbine engine💡︎ N1 value.NOTE: This is available in multiplayer to all far aircraft. See here for more information: Note On SimVars In Multiplayer. | Percent | |
TURB ENG N1 LOSS | Engine Index | This is used to control the N1 loss of the indexed engine, from 0 - no N1 loss - to 100 - 100% N1 loss. | Percent | |
TURB ENG N2 | Engine Index | The indexed turbine engine💡︎ N2 value.NOTE: This is available in multiplayer to all far aircraft. See here for more information: Note On SimVars In Multiplayer. | Percent | |
TURB ENG NUM TANKS USED | Engine Index | Number of tanks currently being used by the indexed engine💡︎. | Number | |
TURB ENG PRESSURE RATIO | Engine Index | The indexed engine💡︎ pressure ratio. | Ratio | |
TURB ENG PRIMARY NOZZLE PERCENT | Engine Index | Percent thrust of primary nozzle for the indexed engine💡︎. | Percent Over 100 | |
TURB ENG REVERSE NOZZLE PERCENT | Engine Index | Percent thrust reverser nozzles deployed for the indexed engine💡︎.NOTE: This is available in multiplayer to all far aircraft. See here for more information: Note On SimVars In Multiplayer. | Percent | |
TURB ENG TANKS USED | Engine Index | Fuel tanks used by the indexed engine💡︎, one or more of the following bit flags:Center 1 Bit 0Center 2 Bit 1Center 3 Bit 2Left Main Bit 3Left Aux Bit 4Left Tip Bit 5Right Main Bit 6Right Aux Bit 7Right Tip Bit 8External 1 Bit 9External 2 Bit 10 | Mask | |
TURB ENG TANK SELECTOR | Engine Index | Fuel tank selected for the indexed engine💡︎. See Fuel Tank Selection for a list of values. | Enum | |
TURB ENG THROTTLE COMMANDED N1 | Engine Index | The indexed turbine engine💡︎ commanded N1 for current throttle position. | Percent | |
TURB ENG THRUST EFFICIENCY LOSS | Engine Index | This can be used to control the thrust efficiency loss of the indexed engine, where a value of 0 is 100% of available thrust, and 100 is 0% available thrust. | Percent | |
TURB ENG VIBRATION | Engine Index | The indexed turbine engine💡︎ vibration value. | Number | |
TURB MAX ITT | N/A | Retrieve the itt_peak_temperature as set in the engines.cfg file. | Rankine |
Reciprical (Piston) Engine Vars
The following SimVars are only valid for piston engines:
| Simulation Variable | Index | Description | Units | Settable |
|---|---|---|---|---|
RECIP CARBURETOR TEMPERATURE | Engine Index | Carburetor temperature the indexed engine💡︎. | Celsius | |
RECIP ENG ALTERNATE AIR POSITION | Engine Index | Alternate air control the indexed engine💡︎. | Position | |
RECIP ENG ANTIDETONATION TANK MAX QUANTITY | Engine Index | The maximum quantity of water/methanol mixture in the ADI tank for the indexed engine💡︎. This value is set as part of the [ANTIDETONATION SYSTEM.N] section in the aircraft configuration files. | Gallons | |
RECIP ENG ANTIDETONATION TANK QUANTITY | Engine Index | The quantity of water/methanol mixture currently in the ADI tank for the indexed engine💡︎. | Gallons | |
RECIP ENG ANTIDETONATION TANK VALVE | Engine Index | The status of the ADI tank valve for the indexed engine💡︎. | Bool | |
RECIP ENG ANTIDETONATION FLOW RATE | Engine Index | This gives the actual flow rate of the Anti Detonation system for the indexed engine💡︎. | Gallons per hour | |
RECIP ENG BRAKE POWER | Engine Index | Brake power produced by the indexed engine💡︎. | Foot pounds (ftlbs) per second | |
RECIP ENG BRAKE POWER PCT | Engine Index | Brake power produced by the indexed engine expressed as a percent over 100.💡︎. | Percent Over 100 | |
RECIP ENG COOLANT RESERVOIR PERCENT | Engine Index | Percent coolant available for the indexed engine💡︎. | Percent | |
RECIP ENG COWL FLAP POSITION | Engine Index | Percent cowl flap opened for the indexed engine💡︎. | Percent | |
RECIP ENG CYLINDER HEAD TEMPERATURE | Engine Index | Engine cylinder head temperature for the indexed engine💡︎. | Celsius | |
RECIP ENG CYLINDER HEALTH | Engine Index | Index high 16 bits is engine number, low16 cylinder number, both indexed from 1. | Percent Over 100 | |
RECIP ENG DETONATING | Engine Index | Set to 1 (TRUE) if the indexed engine💡︎ is detonating. | Bool | |
RECIP ENG EMERGENCY BOOST ACTIVE | Engine Index | Whether emergency boost is active (1, TRUE) or not (0, FALSE) for the indexed engine💡︎. | Bool | |
RECIP ENG EMERGENCY BOOST ELAPSED TIME | Engine Index | The elapsed time that emergency boost has been active on the indexed engine💡︎. The timer will start when boost is first activated.IMPORTANT! This timer does not reset. So if you set your time limit in the engines.cfg file to 315s and you spend 2 minutes with boost active, then pull back on the throttle for 1 minute, then engage boost again for 2 minutes, the simulation will consider that you spent 4 minutes with boost active. The 1 minute pause is not taken into account. | Hours | |
RECIP ENG ENGINE MASTER SWITCH | Engine Index | Whether or not the Engine Master switch is active on an indexed engine💡︎. | Bool | |
RECIP ENG FUEL AVAILABLE | Engine Index | TRUE if fuel is available for the indexed engine💡︎. | Bool | |
RECIP ENG FUEL FLOW | Engine Index | The indexed engine💡︎ fuel flow. | Pounds per hour | |
RECIP ENG FUEL NUMBER TANKS USED | Engine Index | Number of tanks currently being used by the indexed engine💡︎. | Number | |
RECIP ENG FUEL TANKS USED | Engine Index | Fuel tanks used by the indexed engine💡︎, one or more of the following bit flags:Center 1 Bit 0Center 2 Bit 1Center 3 Bit 2Left Main Bit 3Left Aux Bit 4Left Tip Bit 5Right Main Bit 6Right Aux Bit 7Right Tip Bit 8External 1 Bit 9External 2 Bit 10 | Mask | |
RECIP ENG FUEL TANK SELECTOR | Engine Index | Fuel tank selected for the indexed engine💡︎. See Fuel Tank Selection for a list of values. | Enum | |
RECIP ENG GLOW PLUG ACTIVE | Engine Index | Whether or not the Glow Plug is active on the indexed engine💡︎.. | Bool | |
RECIP ENG LEFT MAGNETO | Engine Index | Left magneto state for the indexed engine💡︎. | Bool | |
RECIP ENG MANIFOLD PRESSURE | Engine Index | The indexed engine💡︎ manifold pressure. | Pounds per square inch (psi) | |
RECIP ENG NITROUS TANK MAX QUANTITY | Engine Index | The maximum quantity of nitrous permitted per indexed engine💡︎. | Gallons | |
RECIP ENG NITROUS TANK QUANTITY | Engine Index | The quantity of nitrous per indexed engine💡︎. | Gallons | |
RECIP ENG NITROUS TANK VALVE | Engine Index | The statt of the nitrous tank valve for the indexed engine💡︎. Either 1 (TRUE) for open or 0 (FALSE) for closed. | Bool | |
RECIP ENG NUM CYLINDERS | Engine Index | The number of cylinders for the indexed engine💡︎. | Number | |
RECIP ENG NUM CYLINDERS FAILED | Engine Index | The number of cylinders that have failed in the indexed engine💡︎. | Number | |
RECIP ENG PRIMER | Engine Index | The indexed engine💡︎ primer state. | Bool | |
RECIP ENG RADIATOR TEMPERATURE | Engine Index | The indexed engine💡︎ radiator temperature. | Celsius | |
RECIP ENG RIGHT MAGNETO | Engine Index | The indexed engine💡︎ right magneto state. | Bool | |
RECIP ENG STARTER TORQUE | Engine Index | Torque produced by the indexed engine💡︎. | Foot pound | |
RECIP ENG SUPERCHARGER ACTIVE GEAR | Engine Index | Returns which of the supercharger gears is engaged for the indexed engine💡︎. | Number | |
RECIP ENG TURBINE INLET TEMPERATURE | Engine Index | The indexed engine💡︎ turbine inlet temperature. | Celsius | |
RECIP ENG TURBOCHARGER FAILED | Engine Index | The indexed engine💡︎ turbo failed state. | Bool | |
RECIP ENG WASTEGATE POSITION | Engine Index | When the engines.cfg parameter turbocharged is TRUE, this SimVar will return the percentage that the turbo waste gate is closed for the indexed engine💡︎. If the turbocharged variable is FALSE and the manifold_pressure_regulator parameter is TRUE, then this will return the percentage that the manifold pressure regulator is closed for the indexed engine. | Percent | |
RECIP MAX CHT | N/A | This will return the cylinder head temperature value set by the cht_heating_constant parameter in the engines.cfg file. | Rankine | |
RECIP MIXTURE RATIO | Engine Index | Fuel / Air mixture ratio for the indexed engine💡︎. | Ratio |
Fuel Tank Selection
| Number | Description |
|---|---|
0 | Off |
1 | All |
2 | Left |
3 | Right |
4 | Left auxiliary |
5 | Right auxiliary |
6 | Center |
7 | Center2 |
8 | Center3 |
9 | External1 |
10 | External2 |
11 | Right tip |
12 | Left tip |
13 | Crossfeed |
14 | Crossfeed left to right |
15 | Crossfeed right to left |
16 | Both |
17 | External |
18 | Isolate |
19 | Left main |
20 | Right main |