Green space propulsion: Opportunities and prospects

Heat transfer modeling for supercritical methane flowing in rocket engine cooling channels

The applications of chromatography???mass spectrometry in aerospace industry are considered. The primary attention is devoted to the development of physicochemical grounds of the use of various chromatography???mass spectrometry procedures to solve topical problems of this industry. Various methods for investigation of the composition of rocket fuels, surfaces of structural materials and environmental media affected by aerospace activities are compared. The application of chromatography???mass spectrometry for the development and evaluation of processes for decontaminations of equipment, industrial wastes and soils from rocket fuel components is substantiated. The bibliography includes 135 references.

http://iopscience.iop.org/article/10.1070/RC2013v082n04ABEH004304/pdf

Chromatography – mass spectrometry in aerospace industry

On the prediction of spray angle of liquid-liquid pintle injectors

A number of energetic ionic liquids (EILs) have been reported as promising hydrazine-replacement fuels for hypergolic rocket propulsion. However, most of these EILs were ignited using corrosive and hazardous concentrated fuming nitric acid. Very significant efforts were recently made to utilize “rocket grade” highly concentrated H2O2 (>90%) as a “green” alternative to fuming nitric acid and N2O4 oxidizers. Although “rocket grade” H2O2 is more challenging to use and less safe for storage than commercially available H2O2 (70%), the latter is not considered as a viable oxidizer for hypergolic propulsion. In this work, we focused on the development of novel iodine-rich promoters, capable of initiating hypergolic ignition reactions between a typical EIL fuel – 3-ethyl-1-methyl-1H-imidazol-3-ium cyanotrihydroborate – and H2O2. Among the prepared and evaluated promoters, the top performing [FcCH2NEtMe2+]2[B12I122−] compound 5 showed ignition delay times of 45 ms in the reaction of the tested EIL with H2O2 (70%) and 17 ms with H2O2 (95%). We believe that these findings provide a platform for the development and utilization of commercially available H2O2 as a potential “green” oxidizer for rocket propulsion.

Effects of closo-icosahedral periodoborane salts on hypergolic reactions of 70% H2O2 with energetic ionic liquids

http://ftp.demec.ufpr.br/CFD/bibliografia/propulsao/Caisso_et_al_2009.pdf

Walter Zinner

Papers

A liquid propulsion panorama