Balloon And Airship Variables
The tables below indicate the properties for the 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
You can find a complete index of all available SimVars here: SimVar Index
Balloon Specific Variables
| Simulation Variable | Index | Description | Units | Settable |
|---|---|---|---|---|
BALLOON AUTO FILL ACTIVE | N/A | Sets / returns whether the balloon is creating air inside to emulate fans air flow or not. | Boolean | |
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). | Percent Over 100 | |
BALLOON GAS DENSITY | N/A | The density of the gas inside the balloon. | slug / ft³ | |
BALLOON GAS TEMPERATURE | N/A | Temperature of the gas inside a balloon. | Rankine | |
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. | Percent Over 100 | |
BURNER FUEL FLOW RATE | Burner Name (or index) | The amount of fuel that is flowing through the named Burner expressed in lbs per hour. | Number | |
BURNER HEATING POWER | Burner Name (or index) | This is the thermal power of the named (or indexed) Burner expressed in BTU 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 | |
BURNER PILOT LIGHT ON | Burner Name (or index) | The named (or indexed) hot air balloon Burner 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 | |
BURNER VALVE OPEN VALUE | Valve Name (or index) | This represents how open the the named (or indexed) burner Valve is, where 0 is fully closed and 1 is fully open. | Percent Over 100 | |
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 |
Airship Specific Variables
| Simulation Variable | Index | Description | Units | Settable |
|---|---|---|---|---|
AIRSHIP COMPARTMENT GAS TYPE | Gas Compartment Name (or index) | Gets the type of gas being used by the named (or indexed) gas compartment. | Enum: 0:Other 1:Air 2:Helium 3:Hydrogen | |
AIRSHIP COMPARTMENT OVERPRESSURE | Gas Compartment Name (or index) | Gets the over-pressure value of the named (or indexed) gas compartment. Note that this value is commonly expressed using inWG, which is not a supported SimVar unit, therfore some conversion may need done on the value before display/use. | Millibars | |
AIRSHIP COMPARTMENT PRESSURE | Gas Compartment Name (or index) | Gets the current pressure value of the named (or indexed) gas compartment. Note that this value is commonly expressed using inWG, which is not a supported SimVar unit, therfore some conversion may need done on the value before display/use. | Millibars | |
AIRSHIP COMPARTMENT TEMPERATURE | Gas Compartment Name (or index) | Gets the current temperature value of the named (or indexed) gas compartment. | Celsius | |
AIRSHIP COMPARTMENT VOLUME | Gas Compartment Name (or index) | Gets the volume of gas in the named (or indexed) gas compartment. | Cubic Meter | |
AIRSHIP COMPARTMENT WEIGHT | Gas Compartment Name (or index) | Gets the weight of gas in the named (or indexed) gas compartment. | lbs | |
AIRSHIP DAMPER STATE | Gas Compartment Name (or index) | Gets or sets the state of the named (or indexed) gas compartment damper. 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: 0:Locked 1:Unlocked 2:Forced Open | |
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. 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. | Percent Over 100 | |
AIRSHIP VALVE STATE | Valve Name (or index) | Gets or sets the state of the named (or indexed) valve. | Enum: 0:Locked 1:Unlocked 2:Forced Open | |
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 | |
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 |