"Sky print" for X-33 vehicle via neighboring optimal control

The neighboring optimal control problem for a singularly perturbed nonlinear system with state and control inequality constraints is investigated. The problem is formulated in a more general and different form and the various characteristic features of the analysis are discussed. Next, the analysis is presented to generate a "sky print" for ascent maneuver of a hypersonic vehicle such as X-33 for damage and/or failure conditions.