News Column

Studies from L. Mazzini and Colleagues Reveal New Findings on Aeronautics and Astronautics (Finite thrust orbital transfers)

July 16, 2014

By a News Reporter-Staff News Editor at Defense & Aerospace Week -- A new study on Aeronautics and Astronautics is now available. According to news reporting from Rome, Italy, by VerticalNews editors, the research stated, "The finite thrust optimal transfer in the presence of the Earth's shadow and oblate planet perturbations is a problem of strong interest in modern telecommunication satellite design with plasmic propulsion. The Maximum Principle cannot be used in its standard form to deal with the Earth's shadow."

The news correspondents obtained a quote from the research, "In this paper, using a regularization of the Hamiltonian which expands the Maximum Principle application domain, we provide for the first time, the necessary conditions in a very general context for the finite thrust optimal transfer with limited power around an oblate planet. The costate in such problems is generally discontinuous. To obtain fast numerical solutions, the averaging of the Hamiltonian is introduced. Two classes of boundary conditions are analyzed and numerically solved: the minimum time and the minimum fuel at a fixed time. These two problems are the basic tools for designing the orbit raising of a satellite after the launcher injection into its separation orbit."

According to the news reporters, the research concluded: "Numerical solutions have been calculated for the more important applications of LEO to GEO/MEO missions and the results have been reported and discussed."

For more information on this research see: Finite thrust orbital transfers. Acta Astronautica, 2014;100():107-128. Acta Astronautica can be contacted at: Pergamon-Elsevier Science Ltd, The Boulevard, Langford Lane, Kidlington, Oxford OX5 1GB, England. (Elsevier -; Acta Astronautica -

Our news journalists report that additional information may be obtained by contacting L. Mazzini, ThalesAleniaspace, I-00131 Rome, Italy.

Keywords for this news article include: Rome, Italy, Europe, Aeronautics and Astronautics

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC

For more stories covering the world of technology, please see HispanicBusiness' Tech Channel

Source: Defense & Aerospace Week

Story Tools Facebook Linkedin Twitter RSS Feed Email Alerts & Newsletters