University of Surrey

Test tubes in the lab Research in the ATI Dance Research

Aero-gravity assist maneuvers: Controlled dynamics modeling and optimization

Armellin, R, Lavagna, M and Ercoli-Finzi, A (2006) Aero-gravity assist maneuvers: Controlled dynamics modeling and optimization Celestial Mechanics and Dynamical Astronomy, 95 (1). pp. 391-405.

Full text not available from this repository.


The aero-gravity assist maneuver is here proposed as a tool to improve the efficiency of the gravity assist as, thanks to the interaction with the planetary atmospheres, the angular deviation of the velocity vector can be definitely increased. Even though the drag reduces the spacecraft velocity, the overall Δυ gain could be remarkable whenever a high lift-to-drag vehicle is supposed to fly. Earlier studies offer simplified approaches according to both the dynamics modeling and the atmospheric trajectory constraints. In this paper a 3D dynamical model is adopted and a more realistic L/D performance for the hypersonic vehicle is assumed. Some relevant aspects related to the multidisciplinary design have been considered such as heating rates and structural loads bounding. Comparisons between in and out of plane maneuvering have been performed by assuming, as control variables, either the angle of attack or the bank angle, respectively. The optimal control problem has been solved by selecting a direct method approach. The dynamics has been transcribed into a set of non-linear constraints and the arising non-linear programming problem has been solved with a sequential quadratic programming solver. To gain the global optimum convergence the initial guess has been supplied by solving the same problem by a direct shooting technique and a genetic optimizer. © Springer Science+Business Media B.V. 2006.

Item Type: Article
Subjects : Electronic Engineering
Divisions : Surrey research (other units)
Authors :
Lavagna, M
Ercoli-Finzi, A
Date : May 2006
DOI : 10.1007/s10569-006-9024-y
Copyright Disclaimer : © Springer Science+Business Media B.V. 2006
Uncontrolled Keywords : Aero-gravity assist maneuver, Optimal control problem, Multiple shooting technique
Depositing User : Symplectic Elements
Date Deposited : 17 May 2017 13:54
Last Modified : 25 Jan 2020 00:30

Actions (login required)

View Item View Item


Downloads per month over past year

Information about this web site

© The University of Surrey, Guildford, Surrey, GU2 7XH, United Kingdom.
+44 (0)1483 300800