TY - GEN

T1 - Empirical estimation of entrainment regression rate in liquefying solid fuel for hybrid rocket motor

AU - Kim, Soojong

AU - Lee, Jungpyo

AU - Moon, Heejang

AU - Sung, Honggye

AU - Kim, Jinkon

PY - 2011

Y1 - 2011

N2 - The method of calculating the entrainment regression rate which exists only in liquefying fuel was presented by subtracting the vaporization regression rate from the experimentally measured total regression rate, since the classical regression rate model cannot be applied to the liquefying solid fuel. The general vaporization regression rate model was developed by considering the stoichiometric O/F ratio, mass transfer number and experimental conditions varying with respect to each test set. Alkene fuels (PE, PP) were used for the development of vaporization regression rate and Alkane fuels (PR100, PR95PE05, PR90PE10) were applied to examine the behavior of entrainment regression rate in liquefying fuel. In regression characteristic points of view, the ratio of entrainment regression rate to total regression rate and ratio of vaporization regression rate to entrainment regression rate with respect to the LDPE wt% as well as and total propellant mass flux were taken into account. Through this proposed method, it is expected that droplet amount estimation can be feasible when liquefying fuels are used for hybrid rocket motor.

AB - The method of calculating the entrainment regression rate which exists only in liquefying fuel was presented by subtracting the vaporization regression rate from the experimentally measured total regression rate, since the classical regression rate model cannot be applied to the liquefying solid fuel. The general vaporization regression rate model was developed by considering the stoichiometric O/F ratio, mass transfer number and experimental conditions varying with respect to each test set. Alkene fuels (PE, PP) were used for the development of vaporization regression rate and Alkane fuels (PR100, PR95PE05, PR90PE10) were applied to examine the behavior of entrainment regression rate in liquefying fuel. In regression characteristic points of view, the ratio of entrainment regression rate to total regression rate and ratio of vaporization regression rate to entrainment regression rate with respect to the LDPE wt% as well as and total propellant mass flux were taken into account. Through this proposed method, it is expected that droplet amount estimation can be feasible when liquefying fuels are used for hybrid rocket motor.

UR - http://www.scopus.com/inward/record.url?scp=85086951901&partnerID=8YFLogxK

U2 - 10.2514/6.2011-5823

DO - 10.2514/6.2011-5823

M3 - Conference contribution

AN - SCOPUS:85086951901

SN - 9781600869495

T3 - 47th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit 2011

BT - 47th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit 2011

PB - American Institute of Aeronautics and Astronautics Inc.

T2 - 47th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit 2011

Y2 - 31 July 2011 through 3 August 2011

ER -