A Comprehensive Review of Flamelet Methods: Future Directions and Emerging Challenges by Mohammed Niyasdeen Nejaamtheen, Jeong-Yeol Choi

“…Understanding and accurately modeling combustion processes in engines across a wide range of operating conditions is critical for advancing both subsonic and supersonic propulsion technologies. These engines, characterized by highly complex flow fields, varying degrees of compressibility, and intricate chemical reaction mechanisms, present unique challenges for computational combustion models. …”
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Nonlinear Dynamics of the High-Speed Rotating Plate by Minghui Yao, Li Ma, Wei Zhang

“…This paper investigates nonlinear dynamic responses of the blade with varying rotating speed in supersonic airflow. The blade is simplified as a pre-twist and presetting cantilever composite plate. …”
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Shaping Outflows and Jets by Ambient Pressure: A Unified Framework by Willem A. Baan, Tao An

“…While diverse launching mechanisms have been proposed, we demonstrate that these outflows share a fundamental commonality: their morphology follows the physics of pressure-confined supersonic flows. By extending classical de Laval nozzle theory to account for ambient pressure gradients, we present a unified framework that successfully describes outflows from young stellar objects to active galactic nuclei. …”
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An example of use of gas turbine engine compressor, which has been mastered in production and has good characteristics in a new product project by A. V. Grekhnev

“…The high rates of jet-pipe gas velocity make a turbojet engine with a high-temperature combustor suitable for supersonic cruise products.…”
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Significance of solar radiation and viscous dissipation on oscillatory and steady convective heat transfer around buoyancy-driven sphere using FDM scheme by Alanoud Alsuhaymi, Musaad S. Aldhabani

“…Thermal radiation is used in the development of nuclear reactors, fire propagation, jet motion, chemical manufacturing, missile engine power, rockets, ships, space exploration, supersonic weapons, and gasoline turbines. The main theme of this examination is to generate the oscillations in heat frequency and oscillations in shear stress rate around a sphere surface. …”
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Performance Analysis of Grid Topologies and RANS Turbulence Models in Predicting Aerodynamic Drag Coefficient at Zero-yaw for an Artillery Projectile by A. Ferfouri, D. D. Jerković, N. Hristov, A. V. Kari, T. Allouche

“…Furthermore, the findings indicate that the turbulence model selection impacts the zero-yaw drag prediction more than the grid topology, especially in the transonic and low supersonic cases.…”
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On the Formation of Planets in the Milky Way’s Thick Disk by Tim Hallatt, Eve J. Lee

“…One key difference between the two stellar populations is the time at which they emerged: thick-disk stars are the likely product of cosmic noon (redshift z ∼ 2), an era characterized by high star formation rate, massive and dense molecular clouds, and strong supersonic turbulence. Solving for the background radiation field in these early star-forming regions, we demonstrate that protoplanetary disks at cosmic noon experienced radiation fields up to ∼7 orders of magnitude more intense than in solar neighborhood conditions. …”
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Nonlinear Random Response Analyses of Panels Considering Transverse Shear Deformations under Combined Thermal and Acoustic Loads by Yeong-Nam Kim, Jae-Sang Park, Eun-Soo Go, Min-Hyuk Jeon, In-Gul Kim

“…The panel structures of flight vehicles at supersonic or hypersonic speeds are subjected to combined thermal, acoustic, and aerodynamic loads. …”
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Experimental Study of Methods of Increasing the Efficiency of a Direct-Flow Air-Jet Detonation Engine by Vitalii Stoliarchuk, Oleksandr Zolotko, Oleksandr Aksonov

“…Detonation is a hydrodynamic wave process of propagation of an exothermic reaction zone in a substance at a supersonic speed. The detonation wave is the main shock wave, behind the front of which a chemical reaction is continuously initiated due to heating during adiabatic compression. …”
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Impact of reduced sonic boom exposure on introspective judgments and annoyance, pleasantness and loudness ratings for simulated booms presented in a realistic indoor environment by Marmel Frédéric, Cretagne Léo, Thuong Linh-Thao, Coulouvrat François, Fritz Claudia

“…This paper reports on a project that quantified the effects of sonic boom exposure on human responses, in situations representative of the daily life of European citizens, to inform policy, and develop protection concepts for a new generation of supersonic commercial aircraft that should emit a reduced but perceivable boom while flying overland. …”
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Experimental Investigation of Brazilian 14-X B Hypersonic Scramjet Aerospace Vehicle by João Felipe de Araujo Martos, Israel da Silveira Rêgo, Sergio Nicholas Pachon Laiton, Bruno Coelho Lima, Felipe Jean Costa, Paulo Gilberto de Paula Toro

“…The Brazilian hypersonic scramjet aerospace vehicle 14-X B is a technological demonstrator of a hypersonic airbreathing propulsion system based on the supersonic combustion (scramjet) to be tested in flight into the Earth’s atmosphere at an altitude of 30 km and Mach number 7. …”
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Preparation and Protective Performance of High-Reflection and High-Thermal Insulation Laser Protection Coatings by LI Shuwen, WU Lingfeng, YANG Guanjun, CHEN Lin

“…Laser weapons have entered the actual combat application stage， and the research on anti-laser protection for air and space weapons is becoming increasingly urgent.Prolonged high-energy laser irradiation leads to problems such as reduced metal reflectance，mass loss of ablated layer of the ablative layer and insufficient heat insulation toughness.Based on this，a composite laser protection strategy based on the principles of reflection and heat insulation was proposed.In this study， by adjusting spraying power， spraying distance and other parameters， supersonic flame spraying technology and plasma spraying technology were used to prepare NiCoCrAlTaY bond coating and yttria-stabilized zirconia(YSZ) top coating double-layer coatings， to explore the influence of surface roughness and porosity on reflectivity， and to investigate the laser protection performance of the coatings.Results showed that the larger the spraying power or spraying distance， the more obvious the layer effect， and the more cross-sectional pores were observed in the coating.The surface roughness of the coating decreased first and then increased with the increase in spraying distance.When the secondary reflection structure was removed， the coating surface had Ra＝1.8 μm.When Ra＝0.5 μm， the wedge-shaped structure of the coating increased the reflectivity by about 2.4%compared to that of the coating when Ra＝1.8 μm.It was pointed out that the layered pores were key to the high-reflection wedge structure， the spherical voids were the laser absorption points，and the process parameter of 14.7%porosity (39 kW，100 mm) was the best.In the laser ablation experiment，with the increase in laser power density， the cracks in the coating gradually increased until holes were ablated.The line ablation rate increased approximately in a parabolic manner.With low laser power density (<3 800 W/cm2)， the surface structure changed slightly； as the power increased， the surface cracks increased and deepened， and the petal-like structure in the recondensing zone increased.With high laser power density (>8 050 W/cm2)， partial peeling and ablation of the coating surface caused the coating to fail.…”
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Extreme Scale Height Variations and Nozzle Shocks in Warped Disks by Nicholas Kaaz, Yoram Lithwick, Matthew Liska, Alexander Tchekhovskoy

“…Whenever the scale height bounces, the vertical velocity becomes supersonic, leading to “nozzle shocks” as gas collides at the scale height minima. …”
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Neural Network and Hybrid Methods in Aircraft Modeling, Identification, and Control Problems by Gaurav Dhiman, Andrew Yu. Tiumentsev, Yury V. Tiumentsev

“…Namely, on the example of the problem of aircraft longitudinal angular motion, the possibilities of modeling the motion using the NARX network as applied to a supersonic transport aircraft (SST) are first considered. …”
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Detection of a New GeV Source in the Outer Region of the Coma Cluster: A Signature of External Accretion Shock? by Xiao-Bin Chen, Kai Wang, Yi-Yun Huang, Hai-Ming Zhang, Shao-Qiang Xi, Ruo-Yu Liu, Xiang-Yu Wang

“…The supersonic flow motions associated with infall of baryonic gas toward sheets and filaments, as well as cluster mergers, produces large-scale shock waves. …”
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Liver Elastography for Liver Fibrosis Stratification: A Comparison of Three Techniques in a Biopsy-Controlled MASLD Cohort by Antonio Liguori, Giorgio Esposto, Maria Elena Ainora, Irene Mignini, Raffaele Borriello, Linda Galasso, Mattia Paratore, Maria Cristina Giustiniani, Laura Riccardi, Matteo Garcovich, Antonio Gasbarrini, Luca Miele, Maria Assunta Zocco

“…<b>Background:</b> The aim of this study was to investigate the accuracy in fibrosis staging of a novel shear wave elastography (SWE) device (S-Shearwave Imaging by Samsung) and a previously validated 2D-SWE by Supersonic Imagine (SSI) in patients with biopsy proven metabolic dysfunction-associated steatotic liver disease (MASLD). …”
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Misterium znaku krzyża w pierwszych wiekach chrześcijaństwa. Studium historyczno-liturgiczne by Jarosław Superson

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