A brief review on the recent advancement in the field of jet engine - scramjet engine

Das, Nikimoni; Pandey, Krishna Murari; Sharma, K. K.

doi:10.1016/j.matpr.2020.12.1035

Cited by 20 publications

(3 citation statements)

References 42 publications

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“…Scramjet, as a new type of high-speed propulsion, has become the focus of research. Currently, most of the research is based on liquid fuels such as liquid hydrogen and kerosene [1][2][3][4]. However, the inherent deficiencies of liquid fuel in storage, maintenance, acceleration, stable combustion, rapid response, and technical complexity also bring restrictions to the application of liquid scramjet [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation of Solid Rocket Scramjet Based on Central Strut

Zeng,

Wang,

Huang

et al. 2024

Aerospace

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Scramjet based on solid propellant has become a potential choice for the development of future hypersonic vehicles. In this paper, a boron-containing solid rocket scramjet based on the central strut injection was proposed, and the ground direct-connect experiment with the equivalence ratios of 0.43 to 2.4 under the flight condition of Mach 6, 25 km was carried out. The pressure and flow rate over time were measured in the experiment. The results show that the engine can realize stable supersonic mode or subsonic mode combustion by changing the gas flow rate. The engine can effectively increase the combustor pressure, reduce the unstable combustion time, and advance the strong combustion position by increasing the gas flow rate. The engine achieved high combustion efficiency when the equivalence ratio was about 1, with a maximum of 88.28%. A numerical simulation analysis was also carried out in this paper. Compared to the experimental results, the pressure error obtained by numerical simulation was less than 4%, and the typical position error was less than 3%, suggesting that the simulation model can be used to predict the behavior of scramjet.

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Section: Introductionmentioning

confidence: 99%

Experimental Investigation of Solid Rocket Scramjet Based on Central Strut

Zeng,

Wang,

Huang

et al. 2024

Aerospace

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“…In recent years, the strategic value of the hypersonic vehicle has gradually become prominent and therefore a hot research topic. As the most ideal power device for hypersonic vehicles, the research of scramjet has been a frontier topic [1][2][3][4]. Compared to liquid scramjet, the scramjet that uses solid fuel presents many advantages including a simple structure, high energy density, and low cost, and thus, it has attracted worldwide attention [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Influence of the Multicavity Shape on the Solid Scramjet

Yang

Xia

et al. 2021

International Journal of Aerospace Engineering

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In this paper, a modular solid scramjet combustor with multicavity was proposed. The influence of multicavity shape on the performance of solid scramjet was investigated by the direct-connected tests. The experiments simulated a flight Mach 5.5 at 25 km. The boron-based fuel-rich propellant was used. The microstructure of combustion products was analyzed by SEM. The experimental results show that the fuel-rich mixture produced by the gas generator would ignite rapidly in the solid scramjet combustor. The combustion process showed a typical characteristic of establishment-development-maintenance-attenuation. Compared to the flame-holding cavity, the other shapes of cavities, e.g., narrow and lobe, can improve mixing and combustion. In our experiment, the combustion efficiency increased from 0.41 to 0.48, and the total pressure recovery was 0.36. In summary, the proposed solid scramjet combustor can effectively solve the ignition delay problem of the fuel-rich mixture, and the narrow/lobe cavity shows the ability to improve the mixing and combustion of the fuel-rich mixture.

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“…Powered hypersonic flight (Ma > 5) is currently a research hotspot in the field of aerospace, with the scramjet being an ideal propulsion equipment for this purpose [1][2][3][4]. While most of the current research is based on liquid fuels, the scramjet that employs solid fuel (SSRJ) has many advantages, including simple structure, high energy density, low cost, and safety [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Direct-Connect Test of Solid Scramjet with Symmetrical Structure

Yang

Xia

et al. 2021

Energies

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The solid scramjet has become one of the most promising engine types. In this paper, we report the first direct-connect test of a solid scramjet with symmetrical structure, carried out using boron-based fuel-rich solid propellant as fuel. During the test, which simulated a flight environment at Mach 5.6 and 25 km, the performance of the solid scramjet was obtained by measuring the pressure, thrust, and mass flow. The results show that, due to the change in the combustion area of the propellant and the deposition of the throat in the gas generator during the test, the equivalence ratio gradually increased from 0.54 to 0.63. In a solid scramjet, it is possible to obtain a symmetrical distribution of the flow field within the combustor. Moreover, in a multi-cavity combustor, the combustion state expands from the cavity to the center of the flow channel. The performance of the solid scramjet increased during the test, reaching a combustion efficiency of about 42%, a total pressure recovery coefficient of 0.35, and a thrust gain specific impulse of about 418 s. The solid scramjet with symmetrical structure is feasible. The cavity configuration adopted in this paper can reduce the ignition delay time of fuel-rich gas and improve the combustion efficiency of gas-phase combustible components. The shock trains in the isolator are conducive to the recovery of the total pressure. The performance of the solid scramjet is limited by the low combustion efficiency of the particles.

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A brief review on the recent advancement in the field of jet engine - scramjet engine

Cited by 20 publications

References 42 publications

Experimental Investigation of Solid Rocket Scramjet Based on Central Strut

Experimental Investigation of Solid Rocket Scramjet Based on Central Strut

Influence of the Multicavity Shape on the Solid Scramjet

Direct-Connect Test of Solid Scramjet with Symmetrical Structure

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