Results 41 to 50 of about 863,762 (375)

THE PROBLEM OF THE OPTIMIZATION THE DESIGN PARAMETERS AND CONTROL PROGRAMS OF THE CONTROLLED ROCKET WITH SOLID PROPELLANT ROCKET ENGINE

Авіаційно-космічна техніка та технологія, 2017
The complex problem of the simultaneous optimization of the control programs and design parameters of the controlled single-stage rocket with cruise solid propellant rocket engine is formulated.
Светлана Васильевна Сюткина-Доронина
doaj   +1 more source

Investigation of a Radial Turbines Compatibility for Small Rocket Engine [PDF]

E3S Web of Conferences, 2020
In the radial turbine preliminary design for an expander rocket engine, a comparison was made with axial turbine used in Pratt & Whitney RL10 engine. One of the primary requirements of a liquid propellant rocket engine is the generation of a high thrust,
Leto Angelo
doaj   +1 more source

Driving Micro‐Objects Using Optical Force due to Fluorescence Emission From Molecules

Advanced Optical Materials, EarlyView.
Emission of fluorescence from a micro‐object in a specific direction is expected to generate an optical force driving the object in the opposite direction of the emission, like a rocket. To demonstrate this ‘photon‐driven micro‐rocket’, we prepared dye‐doped polymer micro‐object (PMO) one surface of which was covered with metallic film; the PMO ...
Syoji Ito, Takayuki Nanno, Takahiro Kaji, Mamoru Tamura, Takuya Iida, Hiroshi Miyasaka   +5 more
wiley   +1 more source

Intent Arabic text categorisation based on different machine learning and term frequency

IET Networks, EarlyView., 2022
Abstract The complexity of Internet network configurations has made managing networks a complicated undertaking. Intent‐Based Networking (IBN) is a potential solution to this issue. In contrast to conventional networks, where a concrete description of the settings typically conveys a network administrator's goal kept on each device, an administrator's ...
Mohammad Fadhil Mahdi, Mahmoud Shuker Mahmoud   +1 more
wiley   +1 more source

Exploration of Half‐Cycle Length of Converging Circular Wavy Duct with Diverging‐Outlet: Turbulent Water Dynamics

Advanced Theory and Simulations, EarlyView.
Increasing half‐cycles intensifies turbulence due to enhanced vortex interactions and flow separation at the diverged‐outlets. Longer wavy ducts are shown to increase flow acceleration, resulting in greater output velocities and more turbulent‐kinetic‐energy production. Wave‐period plays a crucial role in determining turbulent intensity, with amplitude
I. L. Animasaun, Taseer Muhammad, Se‐Jin Yook   +2 more
wiley   +1 more source

Single Administration of AAV‐mAtp6v1b2 Gene Therapy Rescues Hearing and Vestibular Disorders Caused by Atp6v1b2‐Induced Lysosomal Dysfunction in Hair Cells

Advanced Science, EarlyView.
Wei et al. establish a hair cell‐specific conditional knockout mouse model (Atp6v1b2fl/fl;Atoh1Cre/+), and demonstrate the importance of Atp6v1b2 for hair cell through maintaining the survival of lysosomes. A single administration of AAV‐ie‐Eh3‐mAtp6v1b2 through scala media at P0‐P2 realizes function compensation and restores hearing and balance ...
Gege Wei, Shiwei Qiu, Xue Gao, Lu Zheng, Yijin Chen, Ying Ma, Haifeng Feng, Jinyuan Yang, Guojie Dong, Huiyi Nie, Weihao Zhao, Xiaoge Li, Guangqin Wang, Wei Xiong, Pu Dai, Yongyi Yuan   +15 more
wiley   +1 more source

Comparative Analysis of Liquid Rocket Engines and Solid Rocket Engines based on Specific-Impulse

, 2023
{"references": ["Title: \"Rocket Propulsion\" (2nd Edition) Authors: Stephen D. Heister and Sven G. Bil\u00e9n Publisher: CRC Press Year: 2017 Relevant sections: \u2022\tChapter 2 - Propellant Characteristics \u2022\tChapter 6 - Liquid Propellant Rocket Engines \u2022\tChapter 7 - Solid Propellant Rocket Motors", "Title: \"Technology for U.S.
openaire   +2 more sources

Efficiency Analysis and Integrated Design of Rocket-Augmented Turbine-Based Combined Cycle Engines with Trajectory Optimization

Energies, 2020
An integrated analysis method for a rocket-augmented turbine-based combined cycle (TBCC) engine is proposed based on the trajectory optimization method of the Gauss pseudospectral. The efficiency and energy of the vehicles with and without the rocket are
Feng Guo, Wenguo Luo, Feng Gui, Jianfeng Zhu, Yancheng You, Fei Xing   +5 more
doaj   +1 more source

Inverse Design of Highly Deformable Mechanical Metamaterial Based on Partitional Semi‐Random Optimization

Advanced Science, EarlyView.
This research presents a novel optimization method for the inverse design of flexible mechanical metamaterials, enhancing traditional strategies by evaluating deformation in subregions. Combining simulated annealing with a genetic algorithm, it improves design efficiency and enables customizable deformation paths.
Xueqing Cao, Zeang Zhao, Panding Wang, Shengyu Duan, Hongshuai Lei   +4 more
wiley   +1 more source

Ti3C2Tx MXene‐Zirconium Diboride Based Ultra‐High Temperature Ceramics

Advanced Science, EarlyView.
This study demonstrates the effectiveness of Ti3C2Tx MXenes as additives in ultra‐high‐temperature ceramics (ZrB₂), enhancing densification, reducing oxygen content, and improving mechanical properties. Through surfactant‐free electrostatic self‐assembly and spark plasma sintering, MXenes enabled the formation of a core–shell microstructure, resulting ...
Srinivasa Kartik Nemani, Nicola Gilli, Steven Goldy, Ankit Kumar, Yooran Im, Austin J. Vorhees, Brian C. Wyatt, Nithin Chandran BS, Nikhilesh Chawla, Garritt J. Tucker, Laura Silvestroni, Babak Anasori   +11 more
wiley   +1 more source