The computation of composite differential-turn trajectory pairs is studied for "fast-evader" and "neutralevader" idealizations introduced in earlier publications. Transversality and generalized corner conditions are examined and the joining of trajectory segments discussed. A criterion is given for the screening of "tandemmotion" trajectory segments. Main focus is upon the computation of barrier surfaces. Fortunately, from a computational viewpoint, the trajectory pairs defining these surfaces need not be calculated completely, the final subarc of multiple-subarc pairs not being required. Weapon effects are introduced in terms of generally forwardfiring but trainable weapons whose envelopes are described by radius limits and conic trainability limits. The pursuer may elect to fill a turn-angle gap with his weaponry, while meeting the usual energy-matching requirement, or he may choose instead to close angularly to tail-chase position, relying on the weapon's upward reach to compensate for an energy deficiency; most often the choice will be intermediate between these extremes. In some cases, dissimilarities in flight performance characteristics between the opposing aircraft tend to favor the pursuit tactic of closing angularly, then driving the evader aloft for an energy-attrition duel, and generally the upward reach of the weaponry increases the effectiveness of such a tactic, permitting its use with relatively low pursuer energy. Illustrative computations are presented for various pairs of example aircraft.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.