Results 41 to 50 of about 29,759 (245)

Three‐Dimensional Highly Thermally Conductive Graphene Blocks by Multiscale Blending and Multistage Pressure Induction

Carbon Energy, EarlyView.
An expandable‐thickness graphene block (GPB) with high thermal conductivity synthesized through multiscale blending and multistage pressure induction (MBP) achieves a record thickness of 12.1 mm, which is more than 10 times that of existing graphene materials. The maximum thermal diffusion ability of GPB‐MBP reaches 6.3 W/K, which offers a new approach
Liyu Zhang, Haitao Hu, Xuan Li, Haihan Xu, Xiaoying Gao, Ruishi Lin, Yingze Meng, Jiaxin He, Shoujin Chang, Guoliang Ding   +9 more
wiley   +1 more source

Study of Hot Gas Pressurizing System Tank and Liquid Rocket Engine Interaction by Dynamic Simulation [PDF]

فصلنامه علوم و فناوری فضایی, 2013
Providing of sufficient input pressure of pumps is Pressurizing system tank mission. In structure of objective propulsion system, pressurizing system of fuel tank is hot gas kind that is feeding with engine which caused of operation relational.
H. R. Ali Mohammady, D. Ramesh, M. R. Heidary, R Farrokhi, H. Karimi   +4 more
doaj  

In Situ Methanation on Mars: A Process Concept Study on the Impact of H2/CO2 and Recycle Ratio

Chemie Ingenieur Technik, EarlyView.
The rocket propellant methane can be produced on Mars by in situ resource utilization. The H2/CO2 ratio is decisive, and excess H2 is favored for providing sufficient propellant purity. The operation mode—with or without recycling of unreacted reactants—depends on the resource availability of the selected landing site. Abstract For return missions from
Franz Braun, Thomas‐Oliver Nagel, Samuel Prinz, Jens Friedland, Robert Güttel   +4 more
wiley   +1 more source

Plasmakristall‐4 Experiment: 10 Years of Operation in Orbit

Contributions to Plasma Physics, EarlyView.
ABSTRACT Plasmakristall‐4 (PK‐4) is a microgravity complex plasma laboratory operated for 10 years on board the International Space Station. Its main purpose is the particle‐resolved investigation of generic condensed matter phenomena using strongly coupled suspensions of microparticles immersed in low‐pressure gas‐discharge plasmas.
M. Pustylnik, H. M. Thomas, M. Kretschmer, M. Thoma   +3 more
wiley   +1 more source

Review on film cooling of liquid rocket engines

Propulsion and Power Research, 2018
Film cooling in combination with regenerative cooling is presently considered as an efficient method to guarantee safe operation of liquid rocket engines having higher heat flux densities for long duration.
S.R. Shine, S.Shri Nidhi
doaj   +1 more source

Coupled Fluid–Structure–Acoustic Analysis of Flow‐Induced Noise Control Using an Elastic Baffle in a Micro Channel

Energy Science &Engineering, EarlyView.
This research explores how fluid flow, structural movement, and sound interact in an elastic baffle system. Using a numerical approach based on the finite element method, the study analyzes how noise and vibrations change with different baffle configurations. The findings reveal that shortening the baffle by half reduces noise transmission by 9%, while
Tohid Adibi, Seyed Esmail Razavi, Shams Forruque Ahmed, Khashayar Fardnia, Aydin Qheydarpoor, Hammad Alotaibi   +5 more
wiley   +1 more source

Resonance in Liquid Rocket Engine Systems [PDF]

Journal of Basic Engineering, 1965
A transient flow analysis of a longitudinal vibration in a liquid rocket engine propellent feed system and its supporting structural framework is described, together with supporting experimental tests. Nonlinear friction losses are used in the partial differential equations of continuity and momentum describing the unsteady flow.
R. H. Fashbaugh, V. L. Streeter
openaire   +1 more source

Trace MA+ Accelerates the Degradation of Perovskite Solar Cells at Elevated Temperatures

Information &Functional Materials, EarlyView.
We investigate how the A‐site cation influences the morphology and optoelectronic properties of perovskite films, and consequently, the operational stability of devices under continuous light illumination at elevated temperature. ABSTRACT Methylammonium (MA+) is the most widely adopted A‐site cation for high‐efficiency perovskite solar cells.
Jiazheng Zhou, Hongsen Cui, Kaifeng Jing, Hengyu Zhang, Zhicheng Guan, Yingjie Hu, Lian Wang, Peng Tao, Zhenyi Ni, Guojia Fang, Gang Li, Guang Yang   +11 more
wiley   +1 more source

FREQUENCY PREDICTION OF STAGED COMBUSTION ROCKET ENGINE BASED ON RBF NEURAL NETWORK

Jixie qiangdu, 2015
In order to avoid creating or modifying the huge amount of finite element model of the rocket engine,application of the RBF（ radial basis function） neural network which was used to predict structural frequency of the liquid rocket engine was analyzed.
DU FeiPing, TAN YongHua, CHEN JianHua
doaj  

Mass Spectrometry Structural Proteomics Enabled by Limited Proteolysis and Cross‐Linking

Mass Spectrometry Reviews, EarlyView.
ABSTRACT The exploration of protein structure and function stands at the forefront of life science and represents an ever‐expanding focus in the development of proteomics. As mass spectrometry (MS) offers readout of protein conformational changes at both the protein and peptide levels, MS‐based structural proteomics is making significant strides in the
Haiyan Lu, Zexin Zhu, Lauren Fields, Hua Zhang, Lingjun Li   +4 more
wiley   +1 more source