Results 121 to 130 of about 21,342 (292)

Hypersonic cruise aircraft propulsion integration study, volume 1 [PDF]

A hypersonic cruise transport conceptual design is described. The integration of the subsonic, supersonic, and hypersonic propulsion systems with the aerodynamic design of the airframe is emphasized.
Brewer, G. D., Morris, R. E.
core   +1 more source

Variation on Toxic and Inflammatory Potential of Coal Smoke of Different Sources From a Region With High Lung Cancer Risk

Environmental Toxicology, EarlyView.
ABSTRACT Excess lung cancer risk in Xuanwei and Fuyuan, China, has been attributed to household air pollution from use of a locally sourced smoky (bituminous) coal. However, the carcinogenic mechanisms remain unclear. Given the important role of inflammation in lung cancer development, this study compared the proinflammatory potentials of the ...
Yongliang Zhang, Wei Hu, Nathanial Rothman, Dingyu Liu, Jihua Li, Jun Xu, Bofu Ning, Roel Vermeulen, Qing Lan, Flemming R. Cassee, George S. Downward   +10 more
wiley   +1 more source

Tracking the Fuel Trajectory from Each Injector for Fuel–Air Mixing in Supersonic Flows

Energies
Fuel injection and mixing remain a critical challenge in the development of supersonic propulsion systems. The efficiency of both mixing and combustion significantly influences the overall performance of these systems, underscoring the importance of ...
Qiongyao Qin, Yanhan Yang, Yidong Liu, Mingze Yuan, Jianzhong Li   +4 more
doaj   +1 more source

Analysis of supersonic combustion flow fields with embedded subsonic regions [PDF]

The viscous characteristic analysis for supersonic chemically reacting flows was extended to include provisions for analyzing embedded subsonic regions.
Dash, S., Delguidice, P.
core   +1 more source

A Low‐Cost Multifunctional PDMS Sponge Based on Boron Compounds and Waste‐Derived Candle Soot for Flame‐Retardancy, Oil–Water Separation, and Self‐Cleaning

Journal of Vinyl and Additive Technology, EarlyView.
A multifunctional PDMS sponge modified with boron compounds and candle soot exhibits superhydrophobicity, flame retardancy, and efficient oil adsorption. The porous structure enables rapid oil uptake, stable self‐cleaning behavior, and improved fire resistance, highlighting its potential for environmental remediation and safe oil–water separation ...
Sena Ayazoglu, Kübra Ozkan Hukum
wiley   +1 more source

Langley Mach 4 scramjet test facility [PDF]

An engine test facility was constructed at the NASA Langley Research Center in support of a supersonic combustion ramjet (scramjet) technology development program.
Anderson, G. Y., Andrews, E. H., Jr., Mackley, E. A., Northam, G. B., Torrence, M. G.   +4 more
core   +1 more source

Mineral Oil‐Induced Ageing Characteristics of Aluminium Nitride‐Doped Silicone Rubber Nanocomposites

High Voltage, EarlyView.
ABSTRACT Room temperature vulcanised (RTV) silicone rubber, commonly used as an external insulating coating on ceramic bushings of oil‐immersed transformers, undergoes significant degradation when exposed to mineral oil under harsh environmental conditions.
Dhanunjaya Naidu Vangapandu, Palash Mishra, Pawel Rozga, R. Sarathi, Mithun Mondal, M. Tariq Nazir, Chillu Naresh   +6 more
wiley   +1 more source

Kerosene combustion in a supersonic flow

Journal of Physics: Conference Series, 2019
Abstract A new approach is proposed to the initiation of kerosene combustion in a supersonic airflow with the stagnation temperature below 2000 K, which consists of a pulsed-periodic gas-dynamic action on the flow. The experiments have shown that it is possible to implement a quasi-steady pulsed combustion mode by choosing the parameters
openaire   +1 more source

Investigation of hypersonic shock-induced combustion in a hydrogen-air system [PDF]

A numerical study is conducted to simulate the ballistic range experiments at Mach 5.11 and 6.46. The flow field is found to be unsteady with periodic instabilities originating in the stagnation zone.
Ahuja, J. K., Singh, D. J., Tiwari, S. N.   +2 more
core   +1 more source

Cardiovascular Health Was Moderate in Austrian Adolescents and Showed an Inverse Relationship With High‐Sensitivity C‐Reactive Protein Levels

Acta Paediatrica, EarlyView.
ABSTRACT Aim This Prospective, Community‐Based Cohort Study Investigated Cardiovascular Health and Its Association With Low‐Grade Inflammation in Adolescents. Methods Data were collected by specially trained medical staff from 1379 Austrian adolescents aged 14–19 years from 3 February 2021 to 28 February 2023.
Katharina Mueller, Alex Messner, Johannes Nairz, Ursula Kiechl‐Kohlendorfer, Michael Knoflach, Sophia Zollner‐Kiechl, Early Vascular Ageing in the Youth study group   +6 more
wiley   +1 more source