Static burning tests on a bread board model of altering-intenisty swirling-oxidizer-flow-type hybrid rocket engine

Kohei Ozawa, Tomoaki Usuki, Genki Mishima, Koki Kitagawa, Masato Yamashita, Masato Mizuchi, Koki Katakami, Yudai Maji, Shigeru Aso, Yasuhiro Tani, Yutaka Wada, Toru Shimada

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

5 Citations (Scopus)

Abstract

A bread board model of Altering-number Swirling Flow Type (A-SOFT) hybrid rocket engine has been newly developed and the static burning tests have been conducted. A-SOFT hybrid rocket engines have controllability of both thrust and O/F without any replacement of components in the engine. This advantage is acquired by controlling oxidizer mass flow rate and effective swirl number. The purpose of this set of experiments is to confirm the continuity, monotonousness and predictability of the performances of A-SOFTs. The A-SOFT BBM showed a favorable fuel regression behavior. The fuel regression averaged along spatial direction fit the shape of regression rate function proposed before the experiments within ±3.5% errors, and the fuel regression rates are continuous and monotonous along swirl number and oxidizer mass flux. The O/F and thrust data also respectively fit the prediction formulas within ±4.2% and ±4.7% errors. c* efficiency is evaluated with the Isp efficiency - nozzle efficiency ratio ηIsp/ ηCF in order to compensate the pressure sensing errors caused by the centrifugal forces of swirling flows. Though ηIsp/ ηCF in the cases of weak swirl injection was clearly larger than in the cases of axial injection, its dependence on effective geometric swirl number was not clear in strong swirl conditions.

Original languageEnglish
Title of host publication52nd AIAA/SAE/ASEE Joint Propulsion Conference, 2016
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
ISBN (Print)9781624104060
Publication statusPublished - 2016
Event52nd AIAA/SAE/ASEE Joint Propulsion Conference, 2016 - Salt Lake City, United States
Duration: Jul 25 2016Jul 27 2016

Publication series

Name52nd AIAA/SAE/ASEE Joint Propulsion Conference, 2016

Other

Other52nd AIAA/SAE/ASEE Joint Propulsion Conference, 2016
CountryUnited States
CitySalt Lake City
Period7/25/167/27/16

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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