Characteristics of scramjet regenerative cooling with endothermic chemical reactions

Yu, Wangyang; Zhou, Weixing; Jia, Zhenjian; Han, Zhixiong

doi:10.1016/j.actaastro.2022.02.025

Cited by 16 publications

(4 citation statements)

References 63 publications

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“…N-decane is a common substitute for aviation kerosene and has a high H f . The analysis of this product used the latest research by Yu from the Harbin Institute of Technology [36], which is close to the Ward PDD model [37]. EHF-851 is a kind of endothermic hydrocarbon fuel mixture; the literature does not provide specific components on this fuel, but it provides an average molecular mass of 147 g/mol, and the average molecular formula of C 10.5 H 21 is estimated [38].…”

Section: Cycle Parameters Of Hydrocarbon-fueled Turboexpander Enginementioning

confidence: 96%

“…The specific impulse and the specific thrust under the frozen hypothesis are also calculated. Except for EHF-851 that lacks data under frozen hypothesis, all other data are from the references in Section 4.1 and NIST Chemistry WebBook [36,[39][40][41]43]. Here, π T is 50, and T t,c is 1050 K. As an endothermic hydrocarbon fuel, RP-3 has a higher γ c , so its value of K is higher than others and even twice the value of the n-decane-fueled engine.…”

Section: Influence Of the Design Parametersmentioning

confidence: 99%

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Feasibility and Performance Analysis of High-Energy-Density Hydrocarbon-Fueled Turboexpander Engine

Gao,

Kang,

Sun

et al. 2023

Aerospace

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With the in-depth research on hypersonic aerodynamics and hypersonic propulsion technology, humans are growing closer to space travel. Recent studies have shown that the pre-cooled air-turborocket (ATR) or turboexpander engines are some of the potential propulsion methods for reusable space vehicles and single stage-to-orbit (SSTO) missions because they have a high specific impulse at low Mach numbers, which can overcome the problem of the “thrust gap” in turbine-based combined-cycle (TBCC) engines. The ATR engine needs an additional oxidizing agent and the turboexpander engine usually uses hydrogen as fuel, which has low energy density and poor safety. To address this problem, this paper proposed a high-energy-density (HED) hydrocarbon-fueled turboexpander engine, and its feasibility has been proven through a simplified thermodynamic model. Through detailed thermodynamic analysis based on the energy and pressure balance, this paper analyzed the performance characteristics of the engine to evaluate its capacity to work in a wide speed range at low Mach numbers. The results show that the endothermic hydrocarbon-fueled turboexpander engine has good specific impulse in Mach 0∼4 at an equivalence ratio of 0.7∼1.3, and the turboexpander engine can be combined with the dual-mode scramjet and become an efficient acceleration method for SSTO missions and the reusable spacecraft.

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Section: Cycle Parameters Of Hydrocarbon-fueled Turboexpander Enginementioning

confidence: 96%

Section: Influence Of the Design Parametersmentioning

confidence: 99%

Feasibility and Performance Analysis of High-Energy-Density Hydrocarbon-Fueled Turboexpander Engine

Gao,

Kang,

Sun

et al. 2023

Aerospace

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show abstract

“…These are cubic equations whose parameters are determined for a pure fluid from the critical constants (P c , T c , Z c ) and Pitzer's acentric factor (ω) while, for a mixture, combining rules are used to express the parameters in terms of pure-component values [28]. The combination of relatively simple form with reasonably reliable prediction performance means that modified cubic EoSs are the most widely used in a variety of engineering problems [12,13,26,[30][31][32][33]. More accurate results, on the other hand, generally depend on much more complicated EoSs, such as generalizations of the Benedict-Webb-Rubin (BWR) equation, with parameters fitted to accurate experimental data covering a wide range of conditions [25,28].…”

Section: Introductionmentioning

confidence: 99%

“…Many researchers studying regenerative cooling technologies for hypersonic flight vehicles have adopted one (or two) of the TRAPP, Chung, et al, and Brule-Starling methods, which will be discussed in detail below, to predict the transport properties of a variety of hydrocarbons and their mixtures [12,13,16,25,31,33,36,37]. Most of them, however, gave no real explanation for their selection, and few have investigated the accuracy of those methods in predicting the transport properties of hydrocarbon fuels and their products in the typical operating ranges of a regenerative cooling system.…”

Section: Introductionmentioning

confidence: 99%

Comparison and Evaluation of Transport Property Prediction Performance of Supercritical Hydrocarbon Aviation Fuels and Their Pyrolyzed Products via Endothermic Reactions

Hwang

Lee

2023

Energies

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This study presents results of predicting the transport properties of hydrocarbon aviation fuels and their decomposed products after pyrolysis. Twenty-seven pure substances and two types of mixture, including both low and high molecular weight hydrocarbons as well as hydrogen, are considered. The specified temperature and pressure ranges, 300 to 1000 K and 0.1 to 5.0 MPa, respectively, correspond to representative operating conditions of a hydrocarbon aviation fuel that circulates as a coolant in the regenerative cooling system of a hypersonic vehicle and include the critical temperatures and pressures of most of the hydrocarbon fuels of interest. Four methods are adopted for the prediction of viscosity and thermal conductivity; the Brule-Starling method is used to predict viscosity, the Modified Propane TRAPP method for thermal conductivity, and the Methane TRAPP, Propane TRAPP, and Chung et al. methods are used for both transport properties. A comparison of the total average values concludes that the Chung et al. and Brule-Starling methods perform best in predicting the viscosity of all substances ranging from hydrogen to high molecular weight hydrocarbons in the temperature and pressure ranges specified in the current study. The quantified comparison by the total average also confirms that the Modified Propane TRAPP method best predicts the thermal conductivity of all of the 29 substances over the set temperature and pressure ranges, although the Propane TRAPP and Chung et al. methods offer a similar level of accuracy.

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Thermodynamic analysis of the hydrocarbon-fuelled air-turborocket engine with complete-combustion gas generator

Gao,

Sun,

Kang

et al. 2024

Acta Astronautica

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Characteristics of scramjet regenerative cooling with endothermic chemical reactions

Cited by 16 publications

References 63 publications

Feasibility and Performance Analysis of High-Energy-Density Hydrocarbon-Fueled Turboexpander Engine

Feasibility and Performance Analysis of High-Energy-Density Hydrocarbon-Fueled Turboexpander Engine

Comparison and Evaluation of Transport Property Prediction Performance of Supercritical Hydrocarbon Aviation Fuels and Their Pyrolyzed Products via Endothermic Reactions

Thermodynamic analysis of the hydrocarbon-fuelled air-turborocket engine with complete-combustion gas generator

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