An expression for the jet outflow velocity (dynamic characteristic of the foam breaker) and the related effective diameter of a destructurized foam bubble is derived from the energy balance in the interaction of the gas jet and foam structure. An analysis of the jet outflow hydrodynamics gives an expression for the volumetric injection rate as a performance characteristic of the aerodynamic foam breaker. Relationships between the structural and geometric parameters of the original and broken foams are derived under the assumption that the foam breaks by a cohesive mechanism. The properties of the foam are related to the bubble reduction ratio and the number of foam destruction stages. The stable operating conditions of the hydrodynamic foam breaker are determined by nomography. These conditions depend on the foam breaker design and on the structure and behavior of the foam.