Author: C. CharalambousPublisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Neighboring Optimal Guidance for Aeroassisted Orbital Transfer in the Presence of Modelling and Measurement Uncertainties
Author: C. Charalambous30th Aerospace Sciences Meeting and Exhibit: 92-0720 - 92-0758
Author: Neighboring Optimal Guidance for Aeroassisted Orbital Plane Change
Author: Jeng-Shing ChernInternational Aerospace Abstracts
Author: Robust Approximate Optimal Guidance Strategies for Aeroassisted Orbital Transfer Missions
Author: Marc R. IlgenAeroassisted Orbital Transfer
Author: D.Subbaram NaiduPublisher: Springer
ISBN: 9783662182536
Category : Technology & Engineering
Languages : en
Pages : 182
Book Description
The concept of aeroassisting for orbital transfer has been recognized as one of the critical technologies for pioneering the space frontier. In space transportation systems, aeroassisting (or aerobraking), defined as the deceleration resulting from the effects of atmospheric drag upon a vehicle during orbital operations, opens new mission opportunities, especially with regard to the establishment of the permanent Space Station Freedom and space explorations to other planets such as Mars. The main areas of research reported in this monograph are atmospheric entry problem by the method of matched asymptotic expansions, coplanar and non-coplanar orbital transfers with aeroassist technology, orbital plan change with aerocruise, and neighbouring optimal guidance. A special feature is the bibliography which will provide the reader with a literature status for further research.
Optimal Aeroassisted Coplanar Orbital Transfer Using an Energy Model
Author: Optimal Aeroassisted Coplanar Orbital Transfer Using an Energy Model
Author: National Aeronaut Administration (Nasa)Publisher: Createspace Independent Publishing Platform
ISBN: 9781722681548
Category :
Languages : en
Pages : 68
Book Description
The atmospheric portion of the trajectories for the aeroassisted coplanar orbit transfer was investigated. The equations of motion for the problem are expressed using reduced order model and total vehicle energy, kinetic plus potential, as the independent variable rather than time. The order reduction is achieved analytically without an approximation of the vehicle dynamics. In this model, the problem of coplanar orbit transfer is seen as one in which a given amount of energy must be transferred from the vehicle to the atmosphere during the trajectory without overheating the vehicle. An optimal control problem is posed where a linear combination of the integrated square of the heating rate and the vehicle drag is the cost function to be minimized. The necessary conditions for optimality are obtained. These result in a 4th order two-point-boundary-value problem. A parametric study of the optimal guidance trajectory in which the proportion of the heating rate term versus the drag varies is made. Simulations of the guidance trajectories are presented. Halyo, Nesim and Taylor, Deborah B. Unspecified Center...
Applied Mechanics Reviews
Author: Piecewise Constant Guidance for Aeroassisted Orbit Transfer
Author: Peter Alexander BidianPublisher:
ISBN:
Category :
Languages : en
Pages : 310
Book Description