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Add part bonus to rotor diameter in thrust calculations #79328

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merged 4 commits into from
Jan 27, 2025
+4 −2
Merged

Add part bonus to rotor diameter in thrust calculations #79328

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f7f5324
Add part bonus to rotor diameter in thrust calculations
raycrasher Jan 24, 2025
c04c7b9
Update JSON_INFO.md
raycrasher Jan 24, 2025
dcf017d
Update src/vehicle.cpp
raycrasher Jan 24, 2025
60f9bb5
Merge branch 'CleverRaven:master' into patch-2
raycrasher Jan 25, 2025
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3 changes: 2 additions & 1 deletion doc/JSON/JSON_INFO.md
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Expand Up @@ -3275,7 +3275,8 @@ Examples:

#### The following optional fields are specific to ROTORs.
```c++
"rotor_diameter": 15, // Rotor diameter in meters. Larger rotors provide more lift.
"rotor_diameter": 15, // Rotor diameter in meters. Larger rotors provide more lift. This also determines the size of the rotor during collisions.
"bonus": 5, // Adds additional rotor diameter during lift calculations. This does not affect rotor collision. This is useful for things like ducted fans or vtol engines that have good lift but smaller danger zones.
```

#### The following optional fields are specific to WORKBENCHes.
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3 changes: 2 additions & 1 deletion src/vehicle.cpp
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Expand Up @@ -4563,7 +4563,8 @@ double vehicle::lift_thrust_of_rotorcraft( const bool fuelled, const bool safe )
{
int rotor_area_in_feet = 0;
for( const int rotor : rotors ) {
double rotor_diameter_in_feet = parts[rotor].info().rotor_info->rotor_diameter * 3.28084;
double rotor_diameter_in_feet = ( parts[rotor].info().rotor_info->rotor_diameter +
parts[rotor].info().bonus ) * 3.28084;
rotor_area_in_feet += ( M_PI / 4 ) * std::pow( rotor_diameter_in_feet, 2 );
}
// take off 15 % due to the imaginary tail rotor power.
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