Experimental investigation of fuel composition and mix-enhancer effects on the performance of paraffin-based hybrid rocket motors

Wu, Yi; Yu, Xilong; Lin, Xin; Li, Sen; Wei, Xiaolin; Zhu, Chuan; Wu, Linlin

doi:10.1016/j.ast.2018.09.026

Cited by 43 publications

(16 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…When considering the trade-off between maintaining the high regression rate of the paraffin-based fuel and meeting the mechanical strength criteria, the form and quantity of additives should be carefully selected. Additives such as PE, stearic acid (SA), and binder (ethylene vinyl acetate (EVA)) will increase the mechanical strength of solid fuel effectively [11][12][13][14][15][16][17][18][19][20]. The application of ammonium perchlorate (AP) to solid fuel was proposed as an effective method to improve the controllability of the staged hybrid rocket combustion efficiency, increase the reliability of the system, and achieve system simplicity.…”

Section: -2mentioning

confidence: 99%

Ballistic test investigation of hybrid rocket motor utilizing stearic acid biofuel with energetic additives for regression rate enhancement

Ahmad

Jagannathan

Abidin

et al. 2021

AIP Conference Proceedings

View full text Add to dashboard Cite

This research evaluates a novel composition based on Stearic Acid (SA) wax fuel, enriched with aluminium and carbon nanotubes (CNT) for hybrid propulsion system by carrying out a ballistic test. Benchmarking the aluminium doped hybrid fuel with the SA wax fuel, the former reveal lesser viscosity which leads to relatively improved entrainment-aided combustion. In contrast to the pure SA fuel, fine aluminium powder doped hybrid fuels show solid-like behavior, and hence greater stability in the solid phase. The loading of ultrafine aluminium powder substantially improves the efficacy of fuel regression during ballistic firing.

show abstract

Section: -2mentioning

confidence: 99%

Ballistic test investigation of hybrid rocket motor utilizing stearic acid biofuel with energetic additives for regression rate enhancement

Ahmad

Jagannathan

Abidin

et al. 2021

AIP Conference Proceedings

View full text Add to dashboard Cite

show abstract

“…The form and quantity of additives need to be carefully selected to maintain the paraffin-based fuel's high regression rate and meet the mechanical strength requirement. Stearic acid (SA) and ethylene-vinyl acetate (EVA) are two additives that can effectively improve the mechanical strength of solid fuel [11]. In terms of chemical concepts, adding solid additives such as metals and metal hydrides can enhance the overall regression rate and the performance of hybrid rocket fuels [12].…”

Section: 𝑟̇= 𝑞̇𝑤 𝑎𝑙𝑙mentioning

confidence: 99%

Metals and Alloys Additives as Enhancer for Rocket Propulsion: A Review

Ismail

Nordin

Azami

et al. 2021

ARFMTS

View full text Add to dashboard Cite

A rocket's engine usually uses fuel and oxygen as propellants to increase the rocket's projection during launch. Nowadays, metallic ingredients are commonly used in the rocket’s operation to increase its performance. Metallic ingredients have a high energy density, flame temperature, and regression rate that are important factors in the propulsion process. There is a wide range of additives have been reported so far as catalysts for rocket propulsion. The studies show that the presence of metal additives improves the regression rate, specific impulse and combustion efficiency. Herein, the common energetic additives for rocket propulsion such as metal and light metals are reviewed. Besides the effect of these energetic particles on the regression behaviors of base (hybrid) fuel has been exclusively discussed. This paper also proposed a new alloy namely high entropy alloys (HEAs) as a new energetic additive that can potentially increase the performance of the rocket propellant system.

show abstract

“…In the past, several approaches have been implemented to improve the regression rate and combustion efficiency. Some of the important approaches are adding metal additives [4][5][6], using mixed hybrid fuels [7], helical fuel grains [8], increasing the heat transfer to solid fuel surface by controlling the oxidizer flow inside the combustion chamber using swirl injection [9][10][11], cavities at the midst of chamber [22] and protrusions (or diaphragms) [12][13][14][15][16][17][18][19][20][21][22][23][24]. Apart from these methods, the regression rate can also be improved by using the wax based-fuels which form a melt layer on its surface during combustion.…”

Section: Introductionmentioning

confidence: 99%

Effect of Protrusion on Combustion Stability of Hybrid Rocket Motor

Dinesh

Kumar

2022

Propellants Explo Pyrotec

View full text Add to dashboard Cite

In hybrid rockets, low regression rate and low combustion efficiency are major drawbacks restricting its utilization in practical applications. Inserting a protrusion in a hybrid rocket combustion chamber is one of the methods to enhance the regression rate and combustion efficiency. In the present study, while utilizing the protrusion method the combustion stability of the hybrid rocket was investigated. The protrusions used for this study were of two different types; one was made of graphite and another one was nylon. The nylon protrusion can regress during the combustion along with the fuel whereas, graphite cannot. Before using the protrusion method, the combustion stability of the hybrid rocket motor (base case) was characterized. During the combustion of the base case motor, intense pressure oscillations were observed for a definite period after the beginning of the combustion. These oscillations were found to be the result of the interaction between the vortex shedding and fundamental longitudinal acoustic modes of the chamber at the fuel grain exit. Upon inserting the protrusion near the fuel grain exit, significant suppression in the pressure oscillations was observed. A 96 % reduction in amplitude of acoustic modes relative to the base case was observed. There was no substantial difference in combustion stability of the hybrid rocket when using graphite or nylon protrusions. Further, it was realized that the combustion stability of the rocket motor remains unchanged even after varying the thickness of the protrusion at 0.8X/L location.

show abstract

Experimental investigation of fuel composition and mix-enhancer effects on the performance of paraffin-based hybrid rocket motors

Cited by 43 publications

References 27 publications

Ballistic test investigation of hybrid rocket motor utilizing stearic acid biofuel with energetic additives for regression rate enhancement

Ballistic test investigation of hybrid rocket motor utilizing stearic acid biofuel with energetic additives for regression rate enhancement

Metals and Alloys Additives as Enhancer for Rocket Propulsion: A Review

Effect of Protrusion on Combustion Stability of Hybrid Rocket Motor

Contact Info

Product

Resources

About