1–50 von 2,126 Ergebnissen
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    Effects of Thermal and Chemical Nonequilibrium on Response of Charring Ablative Materials

    Coskun, Volkan / Sert, Cuneyt | AIAA | 2024
    evaluation of thermodynamic/transport properties of pyrolysis gas mixture and chemical kinetics, if necessary. Thermal nonequilibrium between the ...
    Verlag: The American Institute of Aeronautics and Astronautics

    Machinability improvement in micro milling AlN after laser chemical milling

    Freier Zugriff
    LIU, Jiawei / CHEN, Ni / JIA, Yibo et al. | Elsevier | 2024

    Chemical and Rheological Properties of Bitumen Partially Substituted with Rice-Straw-Based Lignin from Bio-Ethanol Industry Residue

    Andiyappan, Thavamani / Banapuram, Rahul Reddy / Minchala, Divakar et al. | Transportation Research Record | 2024

    The objective of this study is to evaluate the changes in the chemical and rheological properties of bitumen when partially substituted

     ...

    Shock-Tube Measurements of Carbon Monoxide During Combustion of Hydroxyl-Terminated Polybutadiene Products/Air

    Higgs, Jacklyn P. / Pellegrini, Juan Cruz / Rahman, Ramees K. et al. | AIAA | 2024
    and the improvement of SFRJ combustion can be accomplished through fundamental experiments and computational fluid dynamics modeling. The ...
    Verlag: The American Institute of Aeronautics and Astronautics
    Schlagwörter: Chemical Kinetics

    Review of research progress of autonomous and unmanned shipping and identification of future research directions

    Jovanović, Ivana / Perčić, Maja / BahooToroody, Ahmad et al. | Taylor & Francis Verlag | 2024

    The maritime industry is following the trend of increased autonomy and digitalisation applied in aviation, automotive, military, and

     ...

    Direct Numerical Simulation of Nonequilibrium Effects on Decaying Isotropic Turbulence

    Kerkar, Pawan P. / Ghosh, Shankar | AIAA | 2024
    gas in the simulations. The individual and combined effects of vibrational relaxation and chemical reactions are studied by considering four ...
    Verlag: The American Institute of Aeronautics and Astronautics
    Schlagwörter: Chemical Kinetics

    Impact of Clay Contamination on Rutting Performance of Asphalt Mixtures

    Freier Zugriff
    Afsha, Sharmila / Vaid, Suhail R. / Montoya, Miguel A. et al. | Transportation Research Record | 2024
    and dolomite) and active (i.e., bentonite and natural) clays. The methylene blue value (MBV) was used to classify the level of chemical ...

    Evaluation of Physical and Physicochemical Properties of Bitumen with Lignin from Bio-ethanol Residue

    Andiyappan, Thavamani / Kuna, Kranthi Kumar | Springer Verlag | 2024
    obtained from the bio-ethanol industry as a partial substitution for bitumen. The study investigated how the chemical composition of lignin ...

    Family of Skeletal Reaction Mechanisms for Methane–Oxygen Combustion in Rocket Propulsion

    Liberatori, Jacopo / Malpica Galassi, Riccardo / Bianchi, Daniele et al. | AIAA | 2024

    Analyzing methane–oxygen rocket propellant combinations requires suitable modeling of the major chemical reaction processes. Although

     ...
    Verlag: The American Institute of Aeronautics and Astronautics
    Schlagwörter: Chemical Kinetics

    Comprehensive Selection of Base Asphalt Binders for Effective Formulation of Polymer-Modified Asphalts

    Kumbargeri, Yogesh / Planche, Jean-Pascal / Adams, Jeramie J. et al. | Transportation Research Record | 2024
    -depth physical, chemical, rheological, and microstructure characterization of base (neat/unmodified) and corresponding PMA binders to understand ...

    Numerical Investigation of Diffusion Flame in Transonic Flow with Large Pressure Gradient

    Zhu, Yalu / Liu, Feng / Sirignano, William A. | AIAA | 2024
    -preserving splitting scheme for the stiff source terms in chemical reactions. Laminar and turbulent reacting flows in a mixing layer with a large ...
    Verlag: The American Institute of Aeronautics and Astronautics
    Schlagwörter: Chemical Kinetics

    Numerical Investigation of Gas Models for Retropropulsion Flows for Future Mars Missions

    Nastac, Gabriel / Frendi, Abdelkader | AIAA | 2024
    of the air configuration. The lower-fidelity gas modeling simulations are also compared against the higher-fidelity chemical mechanism ...
    Verlag: The American Institute of Aeronautics and Astronautics

    Parametric Study of Transpiration Cooling Using Oxides for Sharp Hypersonic Leading Edges

    Ko, Danny D. / Mannion, Anthony / Zhong, Xiaolin et al. | AIAA | 2024

    Recent escalating interest in the development of highly maneuverable hypersonic vehicles demands sharp leading edges. However, sharp

     ...
    Verlag: The American Institute of Aeronautics and Astronautics
    Schlagwörter: Thermochemistry and Chemical Kinetics

    Effects and mechanism of pilot diesel injection strategies on combustion and emissions of natural gas engine

    Binyang, Wu / Puze, Yang / Yinmi, Luo et al. | SAGE Publications | 2024
    chemical reaction kinetics model. The effects and mechanisms of various PDI strategies on the mixture equivalent ratio, temperature, and ...

    Durability of Passive Thermal Control Materials Exposed to Low-Earth-Orbital Environment

    Finckenor, Miria / Carrico, Meghan | AIAA | 2024
    a variety of materials to the low-Earth-orbital environment. Materials analyzed in this effort include thermal control coatings with ceramic ...
    Verlag: The American Institute of Aeronautics and Astronautics

    Effect of Boric Acid on Electronically Controlled Solid Propellants

    Hu, Hongtong / Ding, Yongjie / Xu, Yishen et al. | AIAA | 2024
    the ECSPs. Based on the calculation results of NASA’s Chemical Equilibrium with Applications program, HB has no apparent effect on the ...
    Verlag: The American Institute of Aeronautics and Astronautics

    Bidirectional Reflectance Distribution Function (BRDF) Measurement of Materials Aged Under Simulated Space Environment

    Shah, Jainisha / Badura, Gregory / Hoffmann, Ryan et al. | Springer Verlag | 2024
    . However, exposure to solar radiation and aggressive chemical species in the upper atmosphere alters these materials’ physical, chemical, and ...

    The Spectral Characterization of Novel Spacecraft Materials in the Low Earth Orbit Environment

    Plis, Elena A. / Badura, Gregory | Springer Verlag | 2024
    aggressive chemical species present in Earth's upper atmosphere. By gaining a thorough understanding of how these material properties evolve over the ...

    Development of Aggregate Dielectric Constant Database Protocol for Asphalt Concrete Density Prediction

    Abufares, Lama / Al-Qadi, Imad L. | Transportation Research Record | 2024
    is detailed. Advanced chemical tests confirmed that the aggregate dielectric constant is a function of its elemental/mineral compositions ...

    Meta-Model Based Blade Optimization Design Considering the Fluid Characteristics of Vehicle Energy Harvesting

    Kim, Hyung Jun / Kang, Seong Min / Kim, Seon Myeong et al. | Springer Verlag | 2024
    societal growth. However, this progress has also given rise to challenges, such as the depletion of chemical resources and the escalating impact of ...
    Verlag: The Korean Society of Automotive Engineers , Seoul
    Schlagwörter: Design of experiments

    Responsive Maneuver Planning for Sun-Synchronous Repeating Ground Track Orbits

    Treblow, Shalom / McGrath, Ciara N. | AIAA | 2024

    This paper investigates the suitability of sun-synchronous orbits (SSOs) as an injection location for responsive, maneuverable

     ...
    Verlag: The American Institute of Aeronautics and Astronautics
    Schlagwörter: Chemical Propulsion System

    DE-NOx/CO Performance According to Ag Loading Amount and Support Type of H2-SCR

    Seo, Choong-kil | Springer Verlag | 2024
    promoted the chemical reaction of Ag. 0.5Ag/TiO2 H2-SCR showed the highest NOx conversion rate of about 18% at 200 °C, and ...
    Verlag: The Korean Society of Automotive Engineers , Seoul

    Long-Term Performance of Soybean-Based Concrete Surface Protectant under Laboratory Accelerated Aging Conditions

    Houshmand Khaneghahi, Mohammad / Mutua, Angela / He, Jialuo et al. | Transportation Research Record | 2024
    chemical compositions remained unaffected by AAC, in contrast to the control samples where a decrease in the quantity of calcium hydroxide and an ...

    Reliability analysis based on load spectrum: A structural improvement of Indian Railways three-piece freight bogie elastomeric pad

    Shukla, Sanjay / Thaplyal, Manish / Gautam, Abhishek Kumar et al. | SAGE Publications | 2024
    existing EM pads. Further, chemical and physical properties are also evaluated in M&C (Metallurgical and Chemical) and Testing Directorate of ...

    Analysis of Power Consumption on BOP System in a Fuel Cell Electric Bus According to the Fuel Cell Load Range

    Freier Zugriff
    Kim, Yebeen / Kim, Jiwoong / Min, Kyoungdoug | Springer Verlag | 2024
    chemical energy into electrical energy. The fuel cell system comprises a fuel cell stack and a balance of plant (BOP) system, which efficiently ...
    Verlag: The Korean Society of Automotive Engineers , Seoul
    Schlagwörter: Balance of plant system

    Mechanical Properties and Neural Network Prediction of Cement Fly Ash-Enhanced Roadbed Soil in Seasonal Frozen Zones Under Short-Term Curing

    Cui, Gaohang / Cheng, Zhuo / Sun, Fanyue et al. | Springer Verlag | 2024
    and cement as modifiers on the physical properties and chemical composition of subgrade soil. The study found that cement admixtures can ...
    Verlag: Korean Society of Civil Engineers , Seoul

    Novel Solid Propellants Enabled Through In Situ Martian Perchlorates

    Hoganson, Alexander C. C. / Afriat, Aaron / Wernex, Chase M. et al. | AIAA | 2024

    With evidence for the native perchlorates existing in the Martian regolith, this paper examines the feasibility and performance of

     ...
    Verlag: The American Institute of Aeronautics and Astronautics
    Schlagwörter: Thermochemistry and Chemical Kinetics

    Nonequilibrium Heating/Cooling Effects in a Mach Number 10 Hydrogen-Fueled Scramjet

    Liu, Hang / Yao, Wei / Zhang, Xu et al. | AIAA | 2024

    The influence of thermal/chemical nonequilibrium on a hydrogen-fueled

     ...
    Verlag: The American Institute of Aeronautics and Astronautics
    Schlagwörter: chemical nonequilibrium

    Novel Lightweight Loop Heat Pipe Radiator for High-Power Space Systems

    Li, Zhisong | AIAA | 2024

    High-power space systems reject a large amounts of waste heat via medium- or high-temperature radiators. For this application, the heat

     ...
    Verlag: The American Institute of Aeronautics and Astronautics
    Schlagwörter: Thermochemistry and Chemical Kinetics

    Payload Optimization for EnVision Mission Using an Electric Propulsion Module for Interplanetary Transfers

    Valencia, Sebastian | AIAA | 2024

    This paper presents a study on the feasibility of using electric propulsion (EP) for interplanetary transfer in the context of an Earth

     ...
    Verlag: The American Institute of Aeronautics and Astronautics
    Schlagwörter: Sphere of Influence

    Multiphysics Modeling for Combustion Instability in Paraffin-Fueled Hybrid Rocket Engines

    Casalino, Lorenzo / Ferrero, Andrea / Folcarelli, Lorenzo et al. | AIAA | 2024

    The use of paraffin-based fuels is a promising approach to a low regression rate in hybrid rocket engines, and the capability to

     ...
    Verlag: The American Institute of Aeronautics and Astronautics

    Stochastic Equilibrium Analysis to Optimize Solid Propellant Combustion Gas Composition

    Michalski, Quentin / Pudsey, Adrian | AIAA | 2024
    properties, composition, and heat of formation. The calculations are performed assuming adiabatic, isobaric chemical equilibrium on synthetic species ...
    Verlag: The American Institute of Aeronautics and Astronautics

    Hot Corrosion Damage Modeling in Aeroengines Based on Performance and Flight Mission

    Pontika, Evangelia / Laskaridis, Panagiotis / Nikolaidis, Theoklis et al. | AIAA | 2024

    Hot corrosion is a form of chemical damage that causes surface degradation, sound material loss, and reduced component life. A lifing

     ...
    Verlag: The American Institute of Aeronautics and Astronautics

    Carbon Monoxide Dissociation at Planetary Entry Conditions Examined by Megahertz-Rate Laser Spectroscopy

    Minesi, Nicolas Q. / Lai, Lok H. / Richmond, Miles O. et al. | AIAA | 2024
    –4.07  atm) and compared to state-of-the-art chemical kinetic models. The time ...
    Verlag: The American Institute of Aeronautics and Astronautics

    Investigating the Chemical Stability of Electrospray Plumes During Particle Collisions

    Bendimerad, Rafid / Tahsin, Abu Taqui Md / Yonas, Adam et al. | AIAA | 2023
    in the plume are susceptible to collisions, chemical reactions, and fragmentation, which may introduce different new species with various ...
    Verlag: The American Institute of Aeronautics and Astronautics

    Machine Learning Tabulation Scheme for Fast Chemical Kinetics Computation

    Ebrahimi, Khashayar / Patidar, Lalit / Fogla, Navin et al. | SAE Technical Papers | 2023
    expensive, so the MLT approach is introduced to solve these issues. The MLT method uses precalculated thermochemical states of ...
    Verlag: Society of Automotive Engineers , SAE International

    Effects of Thermal/Chemical Nonequilibrium on a High-Mach Ethylene-Fueled Scramjet

    Yao, Wei / Liu, Hang / Zhang, Zheng et al. | AIAA | 2023
    detached eddy simulation based on up to 368.34 million cells. An in-depth analysis of the effects of thermal and chemical nonequilibrium on ...
    Verlag: The American Institute of Aeronautics and Astronautics
    Schlagwörter: thermal/chemical nonequilibrum

    Design and performance evaluation of a novel H2/O2 electro-chemical hybrid thruster

    Wang, Xiaoshun / Zhao, Chengren / Huang, Huijun et al. | SAGE Publications | 2023
    A H2/O2 electro-chemical hybrid thruster with a novel design for efficient coupling of hydrogen–oxygen detonation ...
    Schlagwörter: electro-chemical hybrid thruster

    Thermo-chemical and structural analysis of integrated thermal protection system for a space vehicle

    Murtuzapurwala, Najeeba / G, Malaikannan | SAGE Publications | 2023
    protection as well as structural load-bearing capability. Thermo-chemical simulations are carried out with the help of the Fully Implicit Ablation ...

    Statistical Analysis of Long-Term Aging Parameters of Laboratory- and Field-Aged Asphalt Binders Considering Rheological and Chemical Properties

    Jitong, Ding / Jiwang, Jiang / Fujian, Ni et al. | Transportation Research Record | 2023
    of long-term aging protocols on critical rheological and chemical parameters in the laboratory and field by focusing on the evaluation of ...

    Particulate Matter Chemical Characteristics from a Light-Duty Diesel Engine Fueled with PODE/Diesel Blends

    Meng, Xin / Tian, Jing / Liu, Shuai et al. | Springer Verlag | 2023

    To evaluate the Influence of polyoxymethylene dimethyl ethers (PODE) on particulate matter (PM) chemical features

     ...
    Verlag: The Korean Society of Automotive Engineers , Seoul

    Impact of Hydrothermal and Chemical Aging on SCR Storage Characteristics and NOx Reduction Performance in an Ultra-Low NOx System

    Vernham, Bruce / Desai, Chintan / Sharp, Christopher et al. | SAE Technical Papers | 2023
    . Upon chemical aging further deterioration of low temperature performance was observed. This aging phenomenon impacts the dosing control ...
    Verlag: Society of Automotive Engineers , SAE International

    Simulations of Heat and Drag Reduction of Opposing Jet in Hypersonic Flow

    Wu, Qian / Huang, Haiming / Zhao, Yipu et al. | AIAA | 2023
    models, the Gupta chemical kinetics model, and the five-species air model are considered; and a numerical simulation program of hypersonic ...
    Verlag: The American Institute of Aeronautics and Astronautics
    Schlagwörter: Conservation of Momentum Equations , Chemical Kinetics

    Effect of Thermal Nonequilibrium on Captured Mass Flow Rate of Scramjet Inlets

    Wu, You / Liu, Jiwu / Peng, Jian et al. | AIAA | 2023
    nonequilibrium) and the chemical nonequilibrium model (thermal equilibrium) were adopted to study the mass flow rate of the HyShot II scramjet with the ...
    Verlag: The American Institute of Aeronautics and Astronautics

    Measurement and Kinetics Prediction of Undiluted Methane–Oxygen Laminar Flame Speeds

    Turner, Mattias A. / Petersen, Eric L. | AIAA | 2023
    ( S L ) data for a wide range of equivalence ratios ...
    Verlag: The American Institute of Aeronautics and Astronautics
    Schlagwörter: Chemical Kinetics Mechanism

    Exploration of Curing Characteristics of Epoxy-Modified Asphalt

    Dongre, Raj / Andriescu, Adrian / Elwardany, Michael et al. | Transportation Research Record | 2023

    A study was conducted on epoxy-modified asphalt (EMA) diluted with two binders of a different chemical structure, to understand the

     ...

    Failure Analysis of a Brass Synchronizer Ring in the Gearbox of Vehicle

    Gao, Hongchen / Xue, Song / Ren, Yi et al. | Springer Verlag | 2023

    Synchronizers are the heart for vehicles. The reliability of synchronizer ring in the gearbox affects the

     ...
    Verlag: The Korean Society of Automotive Engineers , Seoul

    Investigation of the Physicochemical Interactions and Modification Effects of Polyurethane on Asphalt Binder

    Li, Ruiming / Zhu, Xiaoxu / Wang, Yuhong | Transportation Research Record | 2023
    incorporation of PU has no obvious chemical influence on the asphalt binder and the main working principle of PU modification is its physical dispersion ...

    Impacts of Rejuvenator Pretreatment and Marination on Quality Characteristics of Reclaimed Asphalt Pavement

    Langan, Mariah / Moraes, Raquel / Chen, Chen et al. | Transportation Research Record | 2023
    added to restore the rheological and chemical properties of the RAP binder. Traditionally, rejuvenators are pre-blended into the virgin binder ...

    Energy Conversion Characteristics and Modeling of Supercritical Hydrocarbon Fuel in Regenerative Cooling

    Zhang, Yifeng / Cao, Yong / Feng, Yu et al. | AIAA | 2023

    During the cracking process of hydrocarbon fuel, the heat would be converted into internal energy and chemical energy. It is necessary

     ...
    Verlag: The American Institute of Aeronautics and Astronautics
    Schlagwörter: Chemical Energy