Analysis on Energy-Flow of a Bipropellant-Powered Hydraulic Free Piston Engine
Bipropellant-powered hydraulic free piston engine (BHFPE), as a new type of HFPE, takes advantage of bipropellant in place of conventional fossil fuel, and adopts a catalytic ignition instead of the conventional spark or compression ignition. In this paper, the operational principle and working process of a BHFPE are described firstly, then the chemical formula and molar mass as well as the heating value of the bipropellant i.e. kerosene/HTP combination are dealt with respectively. Thereafter analysis on the internal energy-flow i.e. energy input, transfer, dissipation and output, during a working cycle of the BHFPE are analyzed. Additionally the operating parameters such as working efficiency, maximum speed of the free piston assembly (FPA) and the output hydraulic energy are derived.
Dongye Sun, Wen-Pei Sung and Ran Chen
B. Z. Xia et al., "Analysis on Energy-Flow of a Bipropellant-Powered Hydraulic Free Piston Engine", Applied Mechanics and Materials, Vols. 121-126, pp. 3102-3106, 2012