# Balloon And Airship Variables<no value>
The tables below indicate the properties for the [Simulation Variables](../simulation-variables/) that can be used to get and set properties related specifically to **hot air balloons** and **airships**. For information on the units listed for each variable, please see here: [Simulation Variable Units](../simulation-variable-units/)

You can find a complete index of all available SimVars here: [SimVar Index](../simulation-variables/#simvar-index)


### Balloon Specific Variables

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| Simulation Variable   | Index | Description  | Units  |Settable     |
|---|---|---|---|:---:|
| {{< anchor id="BALLOON-AUTO-FILL-ACTIVE" />}}`BALLOON AUTO FILL ACTIVE` | N/A  | Sets / returns whether the balloon is creating air inside to emulate fans air flow or not. | Boolean| {{< check/good >}} |
| {{< anchor id="BALLOON-FILL-AMOUNT" />}}`BALLOON FILL AMOUNT` | N/A  | This is used to get / set the ratio of air within the balloon envelope from 0 (empty) to 1 (full).     | {{< glossterm >}}percent_over_100{{< /glossterm >}}     | {{< check/good >}} |
| {{< anchor id="BALLOON-GAS-DENSITY" />}}`BALLOON GAS DENSITY` | N/A  | The density of the gas inside the balloon. | {{< glossterm >}}slug{{< /glossterm >}} / ft³ | {{< check/bad >}} |
| {{< anchor id="BALLOON-GAS-TEMPERATURE" />}}`BALLOON GAS TEMPERATURE` | N/A  | Temperature of the gas inside a balloon.   | Rankine| {{< check/good >}} |
| {{< anchor id="BALLOON-VENT-OPEN-VALUE" />}}`BALLOON VENT OPEN VALUE` | N/A  | This represents how open the "parachute valve" of a hot air balloon is, where 0 is fully closed and 1 is fully open.     | {{< glossterm >}}percent_over_100{{< /glossterm >}}     | {{< check/good >}} |
| {{< anchor id="BURNER-FUEL-FLOW-RATE" />}}`BURNER FUEL FLOW RATE` | Burner Name (or index) | The amount of fuel that is flowing through the named [Burner](../../../content-configuration/cfg-files/system/modular-burner-system-information/#burnern) expressed in {{< glossterm >}}lbs{{< /glossterm >}} per hour.  | Number | {{< check/bad >}} |
| {{< anchor id="BURNER-HEATING-POWER" />}}`BURNER HEATING POWER` | Burner Name (or index) | This is the thermal power of the named (or indexed) [Burner](../../../content-configuration/cfg-files/system/modular-burner-system-information/#burnern) expressed in {{< glossterm >}}btu{{< /glossterm >}} per hour. If a value of 0 is given instead of a name (or index) then the *sum total of all burners heating power* will be returned. | Number | {{< check/bad >}} |
| {{< anchor id="BURNER-PILOT-LIGHT-ON" />}}`BURNER PILOT LIGHT ON` | Burner Name (or index) | The named (or indexed) hot air balloon [Burner](../../../content-configuration/cfg-files/system/modular-burner-system-information/#burnern) pilot light status, where 0 (FALSE) is off, and 1 (TRUE) is on. Note that of the burner is not receiving fuel this SimVar will revert to 0 (FALSE), if set to 1 (TRUE).     | Boolean| {{< check/good >}} |
| {{< anchor id="BURNER-VALVE-OPEN-VALUE" />}}`BURNER VALVE OPEN VALUE` | Valve Name (or index)  | This represents how open the the named (or indexed) burner [Valve](../../../content-configuration/cfg-files/system/modular-burner-system-information/#valven) is, where 0 is fully closed and 1 is fully open.    | {{< glossterm >}}percent_over_100{{< /glossterm >}}     | {{< check/good >}} |
| {{< anchor id="GROUND-ATTACHMENT" />}}`GROUND ATTACHMENT` | N/A  | This toggles the status of the attachment rope. When 1 (true) the balloon has an attachment rope, and when 0 (false) it does not.    | Boolean| {{< check/good >}} |

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### Airship Specific Variables

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| Simulation Variable | Index | Description | Units | Settable |
|---|---|---|---|:---:|
| {{< anchor id="AIRSHIP-COMPARTMENT-GAS-TYPE" />}}`AIRSHIP COMPARTMENT GAS TYPE` | Gas Compartment Name (or index) | Gets the type of gas being used by the named (or indexed) [gas compartment](../../../content-configuration/cfg-files/flight_model.cfg/#gas_compartment.N). | Enum:<br>0:Other<br>1:Air<br>2:Helium<br>3:Hydrogen |  {{< check/bad >}}  |
| {{< anchor id="AIRSHIP-COMPARTMENT-OVERPRESSURE" />}}`AIRSHIP COMPARTMENT OVERPRESSURE` | Gas Compartment Name (or index) | Gets the over-pressure value of the named (or indexed) [gas compartment](../../../content-configuration/cfg-files/flight_model.cfg/#gas_compartment.N).<br>Note that this value is commonly expressed using {{< glossterm >}}inwg{{< /glossterm >}}, which is not a supported SimVar unit, therfore some conversion may need done on the value before display/use. | Millibars |  {{< check/bad >}}  |
| {{< anchor id="AIRSHIP-COMPARTMENT-PRESSURE" />}}`AIRSHIP COMPARTMENT PRESSURE` | Gas Compartment Name (or index) | Gets the current pressure value of the named (or indexed) [gas compartment](../../../content-configuration/cfg-files/flight_model.cfg/#gas_compartment.N).<br>Note that this value is commonly expressed using {{< glossterm >}}inwg{{< /glossterm >}}, which is not a supported SimVar unit, therfore some conversion may need done on the value before display/use. | Millibars |  {{< check/bad >}}  |
| {{< anchor id="AIRSHIP-COMPARTMENT-TEMPERATURE" />}}`AIRSHIP COMPARTMENT TEMPERATURE` | Gas Compartment Name (or index) | Gets the current temperature value of the named (or indexed) [gas compartment](../../../content-configuration/cfg-files/flight_model.cfg/#gas_compartment.N). | Celsius |  {{< check/bad >}}  |
| {{< anchor id="AIRSHIP-COMPARTMENT-VOLUME" />}}`AIRSHIP COMPARTMENT VOLUME` | Gas Compartment Name (or index) | Gets the volume of gas in the named (or indexed) [gas compartment](../../../content-configuration/cfg-files/flight_model.cfg/#gas_compartment.N). | Cubic Meter |  {{< check/bad >}}  |
| {{< anchor id="AIRSHIP-COMPARTMENT-WEIGHT" />}}`AIRSHIP COMPARTMENT WEIGHT` | Gas Compartment Name (or index) | Gets the weight of gas in the named (or indexed) [gas compartment](../../../content-configuration/cfg-files/flight_model.cfg/#gas_compartment.N). | {{< glossterm >}}lbs{{< /glossterm >}} |  {{< check/bad >}}  |
| {{< anchor id="AIRSHIP-DAMPER-STATE" />}}`AIRSHIP DAMPER STATE` | Gas Compartment Name (or index) | Gets or sets the state of the named (or indexed) [gas compartment](../../../content-configuration/cfg-files/flight_model.cfg/#gas_compartment.N) damper.<br>Note that dampers are not defined explicitly, but are added automatically by the simulation, one per-compartment that is of the gas type "Air". Non-air compartments do *not* have dampers. | Enum:<br>0:Locked<br>1:Unlocked<br>2:Forced Open |  {{< check/good >}}  |
| {{< anchor id="AIRSHIP-FAN-POWER-PCT" />}}`AIRSHIP FAN POWER PCT` | Gas Compartment Name (or index) | Gets or sets the state of the air intake fan for the named (or indexed) [gas compartment](../../../content-configuration/cfg-files/flight_model.cfg/#gas_compartment.N).<br>Note that air intake fans are not defined explicitly, but are added automatically by the simulation, one per-compartment that is of the gas type "Air". Non-air compartments do *not* have air intake fans. | {{< glossterm >}}percent_over_100{{< /glossterm >}} |  {{< check/good >}}  |
| {{< anchor id="AIRSHIP-VALVE-STATE" />}}`AIRSHIP VALVE STATE` | Valve Name (or index) | Gets or sets the state of the named (or indexed) [valve](../../../content-configuration/cfg-files/flight_model.cfg/#valven). | Enum:<br>0:Locked<br>1:Unlocked<br>2:Forced Open |  {{< check/good >}}  |
| {{< anchor id="MAST-TRUCK-DEPLOYMENT" />}}`MAST TRUCK DEPLOYMENT` | N/A | This toggles the status of the mast truck. When 1 (true) the truck should deploy the mast and other stabilisers, and when 0 (false) it should retract the mast and other stabilisers. | Boolean |  {{< check/good >}}  |
| {{< anchor id="MAST-TRUCK-EXTENSION" />}}`MAST TRUCK EXTENSION` | N/A | This is used to get / set the extension value of the mast from the mast truck (which needs to be *deployed* first), where a value of 0 is no extension and a value of 100 is full extension. | Percent |  {{< check/good >}}  |

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