1–20 of 755 hits
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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 ...
    Publisher: The American Institute of Aeronautics and Astronautics

    Lunar SmallSat Missions with Chemical-Electrospray Multimode Propulsion

    Cline, Bryan C. / Parker, Khary I. / Rosales, José J. et al. | AIAA | 2024
    propellant than the all-chemical approach. The number of switching events and the minimum required mode switching time are quantified for the first ...
    Publisher: The American Institute of Aeronautics and Astronautics
    Keywords: Chemical Propulsion System

    Chemical Kinetics and Thermal Properties of Ablator Pyrolysis Products During Atmospheric Entry

    Gosma, Mitchell R. / Harper, Caleb N. / Collins, Lincoln N. et al. | AIAA | 2024
    a simulated network of perfectly stirred reactors (PSRs) in the chemical solver Cantera. A high-fidelity combustion mechanism computed the ...
    Publisher: The American Institute of Aeronautics and Astronautics
    Keywords: Heterogeneous Chemical Kinetics

    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 ...
    Publisher: The American Institute of Aeronautics and Astronautics
    Keywords: Chemical Kinetics

    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 ...
    Publisher: The American Institute of Aeronautics and Astronautics
    Keywords: Chemical Kinetics

    Direct Validation of Approximate Models for Molecular Vibrational Transition

    Matsukawa, Yutaka | AIAA | 2024
    Publisher: The American Institute of Aeronautics and Astronautics
    Keywords: Vibrational Chemical Kinetics

    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

     ...
    Publisher: The American Institute of Aeronautics and Astronautics
    Keywords: Chemical Kinetics

    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

     ...
    Publisher: The American Institute of Aeronautics and Astronautics
    Keywords: Thermochemistry and 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 ...
    Publisher: The American Institute of Aeronautics and Astronautics

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

    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 ...
    Publisher: The American Institute of Aeronautics and Astronautics
    Keywords: Chemical Kinetics

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

    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

     ...
    Publisher: The American Institute of Aeronautics and Astronautics
    Keywords: Chemical Propulsion System

    Low-Thrust Resonance Gravity-Assist Trajectory Design for Lunar Missions

    Lee, Jinsung / Ahn, Jaemyung | AIAA | 2024
    , yielding trajectories that break the symmetry of the resonance orbits. The multiple-point boundary-value problem seeks to solve a minimum-fuel ...
    Publisher: The American Institute of Aeronautics and Astronautics
    Keywords: Chemical Propulsion System

    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

     ...
    Publisher: The American Institute of Aeronautics and Astronautics
    Keywords: 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

     ...
    Publisher: The American Institute of Aeronautics and Astronautics
    Keywords: chemical nonequilibrium

    Optimized Measurement Timing for In-Space Thrust Inference

    Jia-Richards, Oliver | AIAA | 2024
    Publisher: The American Institute of Aeronautics and Astronautics
    Keywords: Chemical Propulsion System

    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

     ...
    Publisher: The American Institute of Aeronautics and Astronautics
    Keywords: Thermochemistry and Chemical Kinetics

    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

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