right, im modelling the deceleration of a vehicle in simulink
the vehicle uses wheel brakes, and a parachute to decellerate from Vmax to zero
I have constructed a model which models the constant force of the brakes to decelerate the vehicle to stop
I need to amend the model, so that the velocity dependant drag force produced by the parachute, and the drag of the vehicle itself are taken into account.
I am ignoring any turbulence produced
Cd is the drag coefficient of the parachute or car
p is the density
A is the frontal area of the parachute or car
u is the velocity
The Attempt at a Solution
so far as said above, i have the deceleration from the wheel brakes, shown here:
what type of block do i need to use to add the variable drag force to this system?