Results 51 to 60 of about 5,412,680 (360)
Turbopump Parametric Modelling and Reliability Assessment for Reusable Rocket Engine Applications
AerospaceThe development of modern reusable launchers, such as the Themis project with its LOX/LCH4 Prometheus engine, CALLISTO—a reusable VTVL-launcher first-stage demonstrator with a LOX/LH2 RSR2 engine, and SpaceX’s Falcon 9 with its Merlin 1D engine ...
Mateusz T. Gulczyński +3 more
doaj +1 more source
Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2020 Grinding chip thickness is an important parameter to reflect the grinding efficiency and investigate the grinding mechanism. Modeling of the chip thickness is generally based on a certain stochastic distribution model, like Uniform, Gaussian or Rayleigh ...
Chongjun WU +5 more
doaj +1 more source
Space Propulsion: a Survey Study About Current and Future Technologies
, 2018 Current Space Launch Vehicles use chemical reactions (solid and liquid propellants) to achieve suffi cient thrust to launch artifacts and humans into space.
M. Salgado, C. Belderrain, T. Devezas
semanticscholar +1 more source
Evolution of Earth-Lunar Transportation Systems [PDF]
, 1962 Space science - earth-lunar missions - high-energy propellants and nuclear propulsion systems in manned space ...
Koelle, H. H.
core +1 more source
Elinvar Materials: Recent Progress and Challenges
Advanced Engineering Materials, EarlyView.Elinvar materials, exhibiting temperature‐invariant elastic modulus, are critical for precision instruments and emerging technologies. This article reviews recent progress in the field, with a focus on the anomalous thermoelastic behavior observed in key material systems.
Wenjie Li, Yang Ren
wiley +1 more source
Advanced Engineering Materials, EarlyView.High‐frequency (HF) welding of steel is limited by oxide inclusions that degrade weld quality. This study demonstrates, for the first time, the integration of a nonthermal Ar/H2 dielectric barrier discharge (DBD) plasma jet into HF welding. Local plasma treatment provides effective shielding and in‐situ oxide reduction, resulting in markedly fewer and ...
Viktor Udachin +4 more
wiley +1 more source
Advanced Engineering Materials, EarlyView.This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal +2 more
wiley +1 more source
Development and Application Prospect of Space Electric Propulsion Technology
气体物理, 2023 Space electric propulsion technology has entered a new stage of maturity and full application in China. In order to further promote and accelerate the development of electric propulsion technology, this paper adopted the methods of investigation and ...
Hai GENG +8 more
doaj +1 more source
Advanced Engineering Materials, EarlyView.Phase‐changing liquids enable untethered pneumatic actuation in soft robotics but suffer from volatility and storage challenges. This work reports a simple method to encapsulate Novec 7000 within micron‐thin alginate shells via in situ injection and ionic crosslinking.
Rayan A. M. Basodan +3 more
wiley +1 more source
Study on the Ablation Behavior of High-Intensity Lasers in Vacuum
Applied SciencesLaser ablation has been extensively studied by researchers due to its high precision, high efficiency processing capabilities, and wide range of application potentials.
Heyan Gao +8 more
doaj +1 more source