Water flow diagnostics for predicting bi-propellant thruster performance

Chihiro Inoue, Koji Nozaki, Go Fujii, Yu Daimon

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

We demonstrate an environmentally friendly and easily handling cold flow diagnostics to determine the value of exhaust velocity c in bi-propellant thrusters, practically useful prior to the hot firing tests. We employ only water as the simulant liquid, and directly measure the local ratios of mixture and flow rate using a conventional patternator with an absorbance spectrometer. The density ratio mismatching to the real propellants of MON/MMH is able to be reasonably compensated. Combining with the chemical equilibrium analysis, we calculate c at wide range of injection mixture ratio under several injector configurations. The validity of the framework is quantitatively evidenced by comparing with corresponding hot firing tests. This fact deduces that the mixing states of MON/MMH at firing condition is reproducible by water flow diagnostics under the appropriate conversion technique. We also investigate the c trend resulting from injection conditions by flow visualizations.

Original languageEnglish
Title of host publication53rd AIAA/SAE/ASEE Joint Propulsion Conference, 2017
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
ISBN (Print)9781624105111
DOIs
Publication statusPublished - 2017
Externally publishedYes
Event53rd AIAA/SAE/ASEE Joint Propulsion Conference, 2017 - Atlanta, Georgia
Duration: Jul 10 2017Jul 12 2017

Publication series

Name53rd AIAA/SAE/ASEE Joint Propulsion Conference, 2017

Other

Other53rd AIAA/SAE/ASEE Joint Propulsion Conference, 2017
CountryGeorgia
CityAtlanta
Period7/10/177/12/17

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Fingerprint Dive into the research topics of 'Water flow diagnostics for predicting bi-propellant thruster performance'. Together they form a unique fingerprint.

  • Cite this

    Inoue, C., Nozaki, K., Fujii, G., & Daimon, Y. (2017). Water flow diagnostics for predicting bi-propellant thruster performance. In 53rd AIAA/SAE/ASEE Joint Propulsion Conference, 2017 (53rd AIAA/SAE/ASEE Joint Propulsion Conference, 2017). American Institute of Aeronautics and Astronautics Inc, AIAA. https://doi.org/10.2514/6.2017-4934