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A generalization of the rocket formula and its application to advanced space propulsion systems

Authors:	L Nasi J-L Raimbault

Institution:	1. Department of Chemistry, Materials and Chemical Engineering, Laboratory of Biological Structure Mechanics (LaBS) – Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy;2. I.R.C.C.S., Via R. Galeazzi 4, 20161 Milano, Italy;3. Institute of Materials Physics and Engineering, Department of Applied Science and Technology, Politecnico di Torino, 10129 Torino, Italy;1. Technical University of Munich, Boltzmannstr. 15, DE85748 Garching, Germany;2. Initiative for Interstellar Studies, 27-29 South Lambeth Road, London SW8 1SZ, United Kingdom

Abstract:	A generalized rocket formula is derived from a first principles approach. The resulting expression of the thrust is applied to advanced space propulsion systems and a possible link between the asymptotic propellant velocity and the velocity at thruster exit is given. An estimation of the thrust modification due to spacecraft–plume interactions is also considered.

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