000162268 001__ 162268
000162268 005__ 20251017144559.0
000162268 0247_ $$2doi$$a10.1016/j.asr.2025.07.017
000162268 0248_ $$2sideral$$a144899
000162268 037__ $$aART-2025-144899
000162268 041__ $$aeng
000162268 100__ $$aGutierrez de Alba, José David$$uUniversidad de Zaragoza
000162268 245__ $$aA study on an optimal analytical and an accurate algorithmic landing techniques
000162268 260__ $$c2025
000162268 5060_ $$aAccess copy available to the general public$$fUnrestricted
000162268 5203_ $$aLanding trajectory optimization is a fundamental challenge in aerospace engineering, traditionally approached by optimal control problem formulation. In practice, for Earth landing, the vehicle is subject to strongly non-linear perturbations, such as drag, wind, and gravity. Indirect control methods cannot deal with these problems, leading to large errors, while direct methods require high computation times when perturbations are not continuous. Thus, in this work, we propose a hybrid algorithm to approximate the solution of nonlinear optimization problems, based on the iteration of the indirect control analytical solution of the non-autonomous linear problem. The algorithm’s performance has been studied for the problem of landing rockets on the Earth’s surface and compared with a standard boundary value problem solver. The results show that the proposed algorithm tolerates strong discontinuous perturbations, with very small landing error and computation time.
000162268 536__ $$9info:eu-repo/grantAgreement/ES/MICINN/PID2020-117066GB-I00$$9info:eu-repo/grantAgreement/ES/MICINN PRE2021-099561
000162268 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttps://creativecommons.org/licenses/by/4.0/deed.es
000162268 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000162268 700__ $$0(orcid)0000-0003-4859-7224$$aTresaco, Eva$$uUniversidad de Zaragoza
000162268 700__ $$aMortari, Daniele
000162268 7102_ $$12005$$2595$$aUniversidad de Zaragoza$$bDpto. Matemática Aplicada$$cÁrea Matemática Aplicada
000162268 773__ $$g(2025), [11 pp.]$$pAdv. space res.$$tAdvances in Space Research$$x0273-1177
000162268 8564_ $$s1258659$$uhttps://zaguan.unizar.es/record/162268/files/texto_completo.pdf$$yVersión publicada
000162268 8564_ $$s2628449$$uhttps://zaguan.unizar.es/record/162268/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000162268 909CO $$ooai:zaguan.unizar.es:162268$$particulos$$pdriver
000162268 951__ $$a2025-10-17-14:13:51
000162268 980__ $$aARTICLE