Results 51 to 60 of about 11,111 (215)
Conceptual design: Dependence of parameterization on design performance of three-stage hybrid rocket
Journal of Fluid Science and Technology, 2014 The subject of this paper is to improve on parameterization for conceptual design method of three stage hybrid rocket. Multi-Objective Genetic Algorithm (MOGA) is employed to solve multi-disciplinary design exploration of a three-stage launch vehicle ...
Masahiro KANAZAKI +5 more
doaj +1 more source
Micromachines, 2022 Developments in applications such as rocket nozzles, miniature nuclear reactors and solar thermal generation pose high-density heat dissipation challenges.
Tao Wu +4 more
doaj +1 more source
Hypergolic droplet‒film interaction dynamics at high temperatures
Droplet, Volume 4, Issue 3, July 2025.The whole reaction process can be distinctly identified as three stages based on the corona size and the temperature temporal evolution. In the coalescence regime, T* maintains quasi‐stationary values during initial contact, corresponding to hydrodynamic coalescence process. Consequently, the first stage is defined as the inertia‐dominant stage. In the
Yuxin Song, Zuohua Huang, Chenglong Tang
wiley +1 more source
Steerable solid propellant rocket motor Patent [PDF]
, 1964 Steerable solid propellant rocket motor adapted to effect payload orientation as multistage rocket stage or reduce velocity as ...
Raggio, C. W., Jr.
core +1 more source
Conjugate Analyses of Ablation in Rocket Nozzles
Journal of Spacecraft and Rockets, 2019 A methodology coupling the LeMANS flow solver to the MOPAR-MD material response solver is presented, enabling fully coupled, conjugate, two-dimensional simulations of ablation of pyrolyzing materia...
Iain D. Boyd, Peter G. Cross
openaire +2 more sources
Effect of Convergent Section Contour on the Sonic Line in Rocket Engine Nozzles
Journal of Aerospace Technology and Management, 2018 This study made a numeric evaluation of the effect of convergent geometry on the position and profile of the sonic line in rocket engine nozzles. To validate the numerical solution, two conical nozzles, from which experimental results are available in ...
Eduardo Matos Germer, Carlos H. Marchi
doaj
Development and Numerical validation of an Aerospike nozzle Contour Design [PDF]
MATEC Web of ConferencesAerospike nozzle simplified design and analysis, as well as test results, are presented. New techniques in nozzle design have been used to improve the performance of current rocket engines. The use of an aerospike nozzle is one such technique.
A Sam Daniel Fenny +3 more
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Medical Physics, Volume 52, Issue 7, July 2025.Abstract Background The choice of nuclear interaction models in Monte Carlo simulations affects the dose calculation accuracy for light ion beam therapy. Purpose This study aimed to evaluate the dose calculation accuracy and simulation time of three GATE‐RTiON/Geant4 physics lists for therapeutic carbon ion beams, assessing their suitability for ...
Yihan Jia +6 more
wiley +1 more source
Numerical analysis of the shock train in conical nozzles with straight-cut throats [PDF]
FME TransactionsThe overexpanded flow regime in supersonic rocket engine nozzles presents different shock wave structures due to the geometrical configurations of the internal walls.
Tolentino San L. +2 more
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Propellants, Explosives, Pyrotechnics, Volume 50, Issue 7, Page 11-30, July 2025.ABSTRACT Hydrazinium nitroformate (HNF) is a chlorine‐free, high‐energy oxidizer with promising applications in green propulsion systems. This review examines the thermal decomposition, combustion kinetics, flame structure, and behavior of HNF, while critically evaluating the current body of literature.
Lakshay Bansal +2 more
wiley +1 more source