fixup gravity config for peng sim

config/quad.yaml

@@ -10,13 +10,13 @@ simulation:
   simulation_frequency: 1000 # Frequency of physics simulation updates (Hz)
   log_frequency: 20 # Frequency of data logging (Hz)
   duration: 70.0 # Total duration of the simulation (seconds)
+  gravity: 9.81 # Gravitational acceleration (m/s^2)
   use_rk4_for_dynamics_update: false # Enable Runge-Kutta 4th order integration for dynamics, otherwise Euler integration is used
   use_rk4_for_dynamics_control: false # Enable Runge-Kutta 4th order integration for dynamics, otherwise Euler integration is used
 
 quadrotor:
   type: "Peng"
   mass: 1.3 # Mass of the quadrotor (kg)
-  gravity: 9.81 # Gravitational acceleration (m/s^2)
   drag_coefficient: 0.000 # Aerodynamic drag coefficient
   # Inertia matrix [Ixx, Ixy, Ixz, Iyx, Iyy, Iyz, Izx, Izy, Izz] (kg*m^2)
   inertia_matrix: [3.04e-3, 0.0, 0.0, 0.0, 4.55e-3, 0.0, 0.0, 0.0, 2.82e-3]