Investigation of hybrid rocket motor regression rate doped with high entropy metallic additives

Ismail, Izham Izzat and Mohamad Jamil, Nur Arifah and Mohamad Anuar, Mai Nurul Fareesya and Azami, Muhammad Hanafi and Nordin, Norhuda Hidayah (2023) Investigation of hybrid rocket motor regression rate doped with high entropy metallic additives. In: AIAA SciTech Forum, 23rd - 27th January 2023, National Harbor, MD, USA & Online.

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Abstract

Low combustion efficiency and low regression rate in the hybrid rocket limit the implementation of the Hybrid Rocket Motor (HRM) in the propulsion system. Due to this, a comprehensive investigation of utilising the paraffin wax doped with the high entropy metallic additives is used to enhance the regression rate, thrust, and specific impulse. Analytical studies are conducted to model the internal ballistic flow field in the combustion port at different initial configurations. The present investigation is focused on utilising aluminium, boron, magnesium, and High Entropy Alloy (HEA) energetic additives in the HRM. The percentages of energetic additives doped in the fuel are 10%, 20%, and 30% on a mass basis. HRM performance is also determined using various initial conditions such as initial mass flow rate, initial temperature, and initial pressure. The results demonstrate that aluminium has the highest regression rate among these four additives, followed by HEA, HEA with boron, magnesium, and boron. Furthermore, as the percentage of energetic additions increases, so does the rate of HRM regression rate. With a result of 17.50 mm/s, 30% of aluminium has the highest regression rate compared with others. Calculating thrust, Mach number characteristic velocity, and specific impulse has also been used to assess HRM performance. The findings show that increasing the mass flow rate has a significant impact on HRM performance. From the experimental results, it is found that adding High entropy alloy as energetic additives for solid fuel in hybrid rocket motor are proven to increase the regression rate up to 93.5% compared to using pure paraffin only. The experimental results validate the findings in simulation model.

Item Type:	Conference or Workshop Item (Invited Papers)
Uncontrolled Keywords:	hybrid rocket, high entropy alloy, energetic additives
Subjects:	T Technology > TL Motor vehicles. Aeronautics. Astronautics > TL780 Rockets T Technology > TL Motor vehicles. Aeronautics. Astronautics > TL787 Astronautics
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering Kulliyyah of Engineering > Department of Mechanical Engineering Kulliyyah of Engineering > Department of Manufacturing and Materials Engineering
Depositing User:	Dr Muhammad Hanafi Azami
Date Deposited:	20 Feb 2023 15:29
Last Modified:	20 Feb 2023 15:51
URI:	http://irep.iium.edu.my/id/eprint/103723

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