Drag coefficient on vehicle blueprints affects forward and reverse differently. If in reverse, it seems to be additive or multiplicative to the vehicle's movement as opposed to providing any resistance.

Steps to Reproduce

Steps provided by user: [Reproduced Internally]

  1. create new project from VehicleAdvanced BP Template,
  2. open Vehicle_BP
  3. Select VehicleMovementComponent
  4. set dragCoefficient to about 300 units
  5. compile, save, start play in Editor
  6. start move forward - it slowly moves with proper drag
  7. start move backwards - it launches vehicle back with high acceleration.


Vehicle is affected by drag coefficient correctly moving forward. When the vehicle moves backwards, the vehicle flies rapidly off the map


Drag coefficient affects forward and backward movement similarly.

Community References

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ComponentUE - Simulation - Physics
Affects Versions4.11
Target Fix4.13
Fix Commit3040273
Main Commit3058682
CreatedMar 31, 2016
ResolvedJul 6, 2016
UpdatedDec 7, 2022
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