...
where c_p = 1004.5 for air and Lambda is the sweep angle of the fins
Dynamic Pressure
Dynamic pressure (q) represents the aerodynamic pressure exerted on a vehicle in motion through a fluid (air). It is defined by the equation:
q = (1/2)*ρ*v^2
where:
ρ = density of air
v = vehicle velocity
As a rocket ascends through the atmosphere, its velocity increases, and the air density decreases. The point at which these two factors result in the greatest aerodynamic load is known as Max Q—the maximum dynamic pressure. This moment represents the peak mechanical stress experienced by the rocket due to aerodynamic forces.
Structural integrity of the rocket must be maximized to withstand the peak load at Max Q.