TY - GEN
T1 - A study on performance improvement of paraffin fueled hybrid rocket engines with multi-section swirl injection method
AU - Araki, K.
AU - Hirata, Y.
AU - Ohyama, S.
AU - Ohe, K.
AU - Aso, S.
AU - Tani, Y.
AU - Shimada, T.
PY - 2013
Y1 - 2013
N2 - Recently, hybrid rockets have attracted a lot of interests, because it has main some advantages of low cost, safety, and thrust throttling. On the other hand, launching practical satellites, hybrid rocket has technical problems to overcome, such as low fuel regression rate and low combustion effic iency. In order to improve fuel regression rate and combustion efficiency, a new method with multi-section swirl injection was proposed. In the previous study, it was proved that this method was very effective in increasing fuel regression rate, combustion efficiency, and thrust of hybrid rocket engines. Especially, the fuel regression rate for paraffin fuels with multi-section swirl injection method reaches to about 3 to 10 times higher than that of the no-swirl conventional method. Additionally, deep grooves like erosion are observed on the surface around injector ports of fuel grains after combustion tests. In this paper, combustion tests for several grain types were conducted to clarify influences of difference in the number and diameter of injector ports on the regression rate.
AB - Recently, hybrid rockets have attracted a lot of interests, because it has main some advantages of low cost, safety, and thrust throttling. On the other hand, launching practical satellites, hybrid rocket has technical problems to overcome, such as low fuel regression rate and low combustion effic iency. In order to improve fuel regression rate and combustion efficiency, a new method with multi-section swirl injection was proposed. In the previous study, it was proved that this method was very effective in increasing fuel regression rate, combustion efficiency, and thrust of hybrid rocket engines. Especially, the fuel regression rate for paraffin fuels with multi-section swirl injection method reaches to about 3 to 10 times higher than that of the no-swirl conventional method. Additionally, deep grooves like erosion are observed on the surface around injector ports of fuel grains after combustion tests. In this paper, combustion tests for several grain types were conducted to clarify influences of difference in the number and diameter of injector ports on the regression rate.
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M3 - Conference contribution
AN - SCOPUS:84883674945
SN - 9781624102226
T3 - 49th AIAA/ASME/SAE/ASEE Joint Propulsion Conference
BT - 49th AIAA/ASME/SAE/ASEE Joint PropulsionConference
T2 - 49th AIAA/ASME/SAE/ASEE Joint PropulsionConference
Y2 - 14 July 2013 through 17 July 2013
ER -