Trajectory planning for a reentry vehicle under failure conditions

A. D. Trent, D. B. Doman, R. V. Iyer

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


In this paper, we discuss the trajectory planning problem for the unpowered approach and landing phase for a reusable launch vehicle. A method for modifying the aerodynamic database so that trim effects are taken into account is presented. This results in a method to take into account 6 degree-of-freedom effects in a reduced order model, that can then be used in trajectory planning problems. We set up the trajectory planning problem as a state-input constrained, fixed end-point, optimal control problem, and apply Pontryagin's minimum principle to obtain first-order necessary conditions. We then present a variation of the modified simple shooting method to solve the resulting two-point boundary value problem. We present results from two numerical examples: (1) a nominal case with no effector failures, and (2) a case where the right ruddervator is failed upward at 3.5°.

Original languageEnglish
Title of host publicationProceedings of the 2007 American Control Conference, ACC
Number of pages6
StatePublished - 2007
Event2007 American Control Conference, ACC - New York, NY, United States
Duration: Jul 9 2007Jul 13 2007

Publication series

NameProceedings of the American Control Conference
ISSN (Print)0743-1619


Conference2007 American Control Conference, ACC
Country/TerritoryUnited States
CityNew York, NY


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