Results 41 to 50 of about 73,662 (318)

A Review of Concepts, Benefits, and Challenges for Future Electrical Propulsion-Based Aircraft

Aerospace, 2020
Electrification of the propulsion system has opened the door to a new paradigm of propulsion system configurations and novel aircraft designs, which was never envisioned before.
Smruti Sahoo, Xin Zhao, Konstantinos Kyprianidis   +2 more
doaj   +1 more source

Interplanetary Student Nanospacecraft: Development of the LEO Demonstrator ESTCube-2

Aerospace, 2023
Nanosatellites have established their importance in low-Earth orbit (LEO), and it is common for student teams to build them for educational and technology demonstration purposes. The next challenge is the technology maturity for deep-space missions.
Janis Dalbins, Kristo Allaje, Hendrik Ehrpais, Iaroslav Iakubivskyi, Erik Ilbis, Pekka Janhunen, Joosep Kivastik, Maido Merisalu, Mart Noorma, Mihkel Pajusalu, Indrek Sünter, Antti Tamm, Hans Teras, Petri Toivanen, Boris Segret, Andris Slavinskis   +15 more
doaj   +1 more source

The Application of Artificial Intelligent Algorithms in Electric Propulsion [PDF]

Hangkong bingqi
Electric propulsion technology has garnered significant attention due to its much higher specific impulse compared to traditional chemical propulsion. Currently, many mature on-orbit electric propulsion products have been developed worldwide.
Tian Bin, An Bingchen, Xie Kan, Yang Sulan
doaj   +1 more source

On-orbit Space Technology Experiment and Verification Project Outlook of China’s Tiangong Space Station

Space: Science & Technology, 2023
China’s Tiangong space station has been completed in 2022 to support large-scale multidisciplinary space science research and technology experiments. With a large payload capacity and long operating time, Tiangong space station has many irreplaceable ...
Zhao Yin, Zongpeng Zhu, Pei Guo, Zhengyi Wang, Jinlu Yang, Yan Song   +5 more
doaj   +1 more source

A Dual Mode Propulsion System for Small Satellite Applications

Aerospace, 2018
This study focused on the development of a chemical micropropulsion system suitable for primary propulsion and/or attitude control for a nanosatellite.
Kevin R. Gagne, M. Ryan McDevitt, Darren L. Hitt   +2 more
doaj   +1 more source

Circulating tumor DNA monitoring and blood tumor mutational burden in patients with metastatic solid tumors treated with atezolizumab

Molecular Oncology, EarlyView.
In patients treated with atezolizumab as a part of the MyPathway (NCT02091141) trial, pre‐treatment ctDNA tumor fraction at high levels was associated with poor outcomes (radiographic response, progression‐free survival, and overall survival) but better sensitivity for blood tumor mutational burden (bTMB).
Charles Swanton, Russell W. Madison, Candice Francheska B. Tambaoan, Funda Meric‐Bernstam, Christopher J. Sweeney, Razelle Kurzrock, Howard A. Burris III, David R. Spigel, Hanna Tukachinsky, Jason Hughes, Julia Malato, Bongin Yoo, Tania Szado, Cheryl Schwab, Lincoln W. Pasquina, Amaya Gasco, Katja Schulze, Claire F. Friedman   +17 more
wiley   +1 more source

Analysis and Prospect of Space Reactor Technology Development

Yuanzineng kexue jishu
As a significant space energy technology, space reactor technology possesses unique advantages and demonstrates broad application prospects in the space domain.
ZHAO Shouzhi1, XIE Jiachun1, LYU Zheng1, GAO Feng2, AN Weijian1, HOU Cheng1, HUO Honglei1
doaj   +1 more source

Data‐driven forecasting of ship motions in waves using machine learning and dynamic mode decomposition

International Journal of Adaptive Control and Signal Processing, EarlyView.
Summary Data‐driven forecasting of ship motions in waves is investigated through feedforward and recurrent neural networks as well as dynamic mode decomposition. The goal is to predict future ship motion variables based on past data collected on the field, using equation‐free approaches.
Matteo Diez, Mauro Gaggero, Andrea Serani   +2 more
wiley   +1 more source

A Q‐Learning Algorithm to Solve the Two‐Player Zero‐Sum Game Problem for Nonlinear Systems

International Journal of Adaptive Control and Signal Processing, Volume 39, Issue 3, Page 566-581, March 2025.
A Q‐learning algorithm to solve the two‐player zero‐sum game problem for nonlinear systems. ABSTRACT This paper deals with the two‐player zero‐sum game problem, which is a bounded L2$$ {L}_2 $$‐gain robust control problem. Finding an analytical solution to the complex Hamilton‐Jacobi‐Issacs (HJI) equation is a challenging task.
Afreen Islam, Anthony Siming Chen, Guido Herrmann   +2 more
wiley   +1 more source

A Design Algorithm for Electroaerodynamic Propulsion System [PDF]

فصلنامه علوم و فناوری فضایی
Electroaerodynamic (EAD) propulsion has gained considerable attention in aerospace research due to its ability to generate thrust even in rarefied atmospheres at high altitudes.
Mehran Nosratollahi, Alireza Ahmadi, Rouhollah Khoshkhoo   +2 more
doaj   +1 more source