A generic calculation model for aircraft single-hit vulnerability assessment based on equivalent target

Aircraft single-hit vulnerability/survivability is usually expressed as the probability of kill or the vulnerable area in case of being given a random threat (e.g. a fragment) hit on the aircraft. In this paper, introducing the "equivalent target method" in lethality field into the aircraft vulnerability assessment, a generic vulnerability calculation model is proposed. In order for a good representation of reality, the model considers the threat change of state-of-motion during the threat penetrating into the components successively. Application shows that the proposed generic model has solved the P_k/h, (probability of kill given by a hit on the component) calculation problem in aircraft vulnerability assessment, and is easier to be computerized than other commonly used models.