What is the Center of Pressure?

The “Center of Pressure” (COP), or “Pressure Center,” of an object is the point where the resultant of the pressure forces acting on the surface of the object intersects. This point applies an equal and opposite force to the object’s surface, ensuring the object remains in equilibrium. The center of pressure is important for understanding the balance and aerodynamic performance of an object. The farther back the center of pressure is, the greater the nose-up moment of the object, leading to an increased tendency for the object to pitch upwards.

Methods for Finding the Center of Pressure:

Uniform Pressure Distribution: When the pressure distribution is uniform across the object’s surface, the center of pressure coincides with the geometric center of the object.

Non-uniform Pressure Distribution: When the pressure distribution is not uniform, the center of pressure varies depending on the shape and pressure distribution of the object. Various methods can be used to determine the center of pressure:

• • Experimental Methods: Pressure sensors are placed on the object’s surface to measure pressure distribution, and the center of pressure is calculated based on these measurements.

  • Computational Methods: The center of pressure can be calculated using the object’s geometric model and the pressure distribution function through integrals.