Ground experimentation with 3D printed scramjet inlet models at hypervelocities

Rêgo, Israel; Marcos, Thiago Victor Cordeiro; Pinto, David Romanelli; Vilela, Renan G.; Galvão, Victor Alves Barros; Pivetta, Álvaro Francisco Santos; Camilo, G.P.; Silva, J.R.T.; Lima, Bruno Coelho; Carvalhal, A.K.; Cardoso, Ronaldo L.; Martos, João Felipe de Araujo; Santos, Alberto Monteiro dos; Oliveira, Antônio Carlos de; Toro, Paulo

doi:10.1016/j.ast.2016.06.009

Cited by 18 publications

(5 citation statements)

References 7 publications

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“…Furthermore, it is noteworthy that the intricacy of the models may experience a significant escalation without any discernible effect on the duration of the production process. Nevertheless, it is imperative to employ a post-processing methodology to acquire dependable surfaces for aerodynamic models [86][87][88][89].…”

Section: Application In the Aerospace Industrymentioning

confidence: 99%

Advances in fused deposition modeling on process, process parameters, and multifaceted industrial application: a review

Enyan,

Amu-Darko,

Issaka

et al. 2024

Eng. Res. Express

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In the current era of intense competition, optimizing the design and manufacturing processes through time reduction measures can prove to be advantageous. The objective of profit maximization is a crucial consideration across diverse industries. The utilization of 3D printing technology has been crucial in producing personalized items at a reduced expense and with increased efficiency across various industrial domains. Fused deposition modeling (FDM) is an effective and cost-efficient Additive Manufacturing (AM) technique utilized in diverse engineering applications. The introduction of the FDM process occurred in the early 1990s by Stratasys Inc., a company based in the United States. Since then, FDM technology has become a prevalent AM process widely utilized for producing functional prototypes with precision and safety. To advance the technology, it necessitates a comprehensive understanding of the process, involved parameters, applications, and trends, as well as identifying challenges and prospects. This review explores the fundamental underpinnings of the FDM process, detailing production stages, parameters, applications, and challenges and prospects. It critically evaluates process parameters and their influence on the FDM process, drawing insights from a synthesis of relevant studies. The paper also provides an in-depth examination of FDM applications across various domains, evaluating and summarizing associated studies. The study draws upon prior research and highlights the evolving landscape of FDM application trends and current trends, providing a solid foundation for readers to grasp the topic.

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Section: Application In the Aerospace Industrymentioning

confidence: 99%

Advances in fused deposition modeling on process, process parameters, and multifaceted industrial application: a review

Enyan,

Amu-Darko,

Issaka

et al. 2024

Eng. Res. Express

View full text Add to dashboard Cite

show abstract

“…Marcos et al [187] conducted a ground test to establish a model of the entrance of scramjet air inlets through additive manufacturing. Figure 52 shows the scramjet model which was used in the ground test.…”

Section: Startmentioning

confidence: 99%

“…CAD design of the scramjet inlet (left); photography of the Ultem 9085 three-dimensional printed scramjet model (center); and schematic of the layer orientation for printing (right)[187].…”

mentioning

confidence: 99%

Thermal Protection System and Thermal Management for Combined-Cycle Engine: Review and Prospects

et al. 2019

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Combined-cycle engine is a potential propulsion system for hypersonic aircraft. To ensure long-term, normal operation of combined-cycle engine under the harsh environment of high thermal load, it is of great significance to study the thermal protection and management of the propulsion system. In this study, the objective and development status of thermal protection and thermal management systems for the combined-cycle propulsion system were described. The latest research progresses of thermal protection, thermal barrier coating, and thermal management system of the combined-cycle propulsion system were summarized. Moreover, the problems and shortcoming in current researches were summarized. In addition, a prospect for the future development of thermal protection and management of the combined-cycle propulsion system was presented, pointing out a direction of great value and vital research significance to thermal protection and management of the combined-cycle propulsion system.

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“…Rêgo et al [16] performed wind-tunnel experiments where several 3-D printed scramjet inlet models were evaluated at hypersonic speeds. The study focused on the use of polymer-based models, considering a single ramp for the scramjet inlet, at a Mach number of 7.5.…”

Section: Introductionmentioning

confidence: 99%

Numerical evaluation of effects of the isolator height and the leading-edge bluntness on a scramjet inlet

Siqueira

Rosa

Ribeiro

2020

J Braz. Soc. Mech. Sci. Eng.

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Air-breathing hypersonic vehicles can be powered by scramjet (supersonic combustion ramjet) engines, whose inlet requires blunt leading edges in order to overcome the high heat fluxes that are inherent of hypersonic flights. Thus, this work has the purpose of evaluating, through detailed two-dimensional computational fluid dynamics analysis, the influence of the leading-edge bluntness and isolator height on the airflow of a scramjet intake. Three radii have been analyzed for the forebody and cowl leading edges: sharp, 0.5 and 1.0 mm. Moreover, two different isolator heights were varied: 15 and 20 mm. Fixed temperatures of 300 K and 1300 K were considered along the hypersonic vehicle wall. The static temperature, pressure, and Mach number contour are part of the analysis, as well as the Stanton number and the adiabatic kinetic efficiency of the scramjet. It was evidenced that both leading-edge bluntness and isolator height performed great influence on the intake airflow structure. Results showed that the isolator height had a major effect on the flow separation at the isolator entrance yielding a recirculation zone that increases with the isolator height. Furthermore, higher Stanton numbers and temperature along the isolator were found for the shorter isolator height due to stronger shock waves and higher frequency of shock-wave train. The leading-edge bluntness, in this analysis, was taken as a parameter to reduce the heat flux at the stagnation point of leading edges. However, a decrease in the adiabatic kinetic efficiency was observed when the leading-edge radius is increased. Moreover, blunt leading edges promoted a decrease in Stanton number along the scramjet intake walls and also a decrease in average temperatures throughout the isolator.

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Ground experimentation with 3D printed scramjet inlet models at hypervelocities

Cited by 18 publications

References 7 publications

Advances in fused deposition modeling on process, process parameters, and multifaceted industrial application: a review

Advances in fused deposition modeling on process, process parameters, and multifaceted industrial application: a review

Thermal Protection System and Thermal Management for Combined-Cycle Engine: Review and Prospects

Numerical evaluation of effects of the isolator height and the leading-edge bluntness on a scramjet inlet

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