Results 31 to 40 of about 9,635,660 (350)

Study on Aerodynamic Shape Optimization for Wing of Business Jet

Hangkong gongcheng jinzhan, 2022
With the development of world economy and trade,the medium business jets are more favored by customers. In order to further improve the general aerodynamic performance of high-speed turbofan business jet,the optimization methods based on the full ...
MA Xiaoyong, WU Junqiang, XIAO Yunlei, ZHANG Yanjun, CHENG Zhihang, QIN Hejun, MIAO Shuai   +6 more
doaj   +1 more source

A High-Feasibility Real-Time Trajectory-Planning Method for Parafoils Based on a Flexible Dynamic Model

Mathematics
Effective trajectory planning is critical for achieving precise autonomous navigation and safe landing of parafoil delivery systems. However, current parafoil trajectory planning still faces challenges in ensuring consistency between actual system ...
Jiaming Yu, Hao Sun, Qinglin Sun, Mingwei Sun, Zengqiang Chen   +4 more
doaj   +1 more source

Longitudinal Aerodynamic Parameter Identification for Blended-Wing-Body Aircraft Based on a Wind Tunnel Virtual Flight Test

Aerospace, 2022
The wind tunnel virtual flight test realizes the dynamic semi-free flight of the model in the wind tunnel through the deflections of the control surface and uses the test data to identify the aerodynamic derivatives.
Lixin Wang, Shang Tai, Ting Yue, Hailiang Liu, Yanling Wang, Chen Bu   +5 more
doaj   +1 more source

Reversible calculation of a projectile path applying the model of six degrees of freedom motion

Vojnotehnički Glasnik, 1998
During a projectile flight, together with the change of angles of attack, the H, P, M and T values of Murphy's coefficients are changed depending on the change of mass characteristics and derivatives of aerodynamic coefficients in the function of the ...
Dušan Regodić
doaj   +1 more source

An analytical frequency‐domain model of aerodynamic mass and damping of floating wind turbines

Wind Energy, 2023
The fore‐aft motion of the rotor‐nacelle assembly (RNA) of a rotating floating wind turbine (FWT) can cause an oscillation in aerodynamic thrust, which may be equivalently treated as frequency‐dependent aerodynamic mass and damping effects. In this study,
Can Yang, Longfei Xiao, Peng Chen, Zhengshun Cheng, Mingyue Liu, Lei Liu   +5 more
doaj   +1 more source

Aerodynamic Characteristics of Steam Turbine Reaction Stages. (Aerodynamic Characteristics of a Single Stage).

TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B, 1991
The aerodynamic characteristics of reaction stages of a large steam turbine have been studied for the basis of performance improvement. For the first step, the characteristics of a single reaction stage with typical reaction blading were studied by two-dimensional low-speed cascade tests and single-stage air turbine tests.
Yasuo KURAMOTO, Hisakuni TAKENAGA, Takehiko NAGAYAMA, Yoshiki KADOYA, Masanobu HONJO   +4 more
openaire   +2 more sources

Estimation of aerodynamic coefficients for a ball by using characteristics of trajectory

Nihon Kikai Gakkai ronbunshu, 2014
We investigate estimation methods of aerodynamic coefficients for a ball in sports by using characteristic quantities of its trajectory. One method is based on the quantities representing the whole shape of trajectory while the other utilizes local ...
Kaito YASUDA, Kazuhiro TSUBOI, Kohei TANAKA, Takeshi MIYAZAKI   +3 more
doaj   +1 more source

The HIT Network for Children and Adolescents With CNS Tumors Facilitates Improvements of Diagnostic Assessments, Multimodal Treatments, Individual Counseling, and Research in Germany, Austria, and Switzerland

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background The HIT network was established in 2000 to create a population‐based structure aiming to improve survival rates and reduce late effects for children with central nervous system (CNS) tumors by conducting comprehensive clinical trials.
Stefan Rutkowski, Michael C. Frühwald, Gudrun Fleischhack, Stephan Tippelt, Pablo Hernáiz‐Driever, Olaf Witt, Astrid Gnekow, Christof Kramm, Matthias Eyrich, Johannes E. A. Wolf, Hermann Müller, Carsten Friedrich, Uwe R. Kordes, Denise Obrecht‐Sturm, Petra Ketteler, Barbara von Zezschwitz, Pascal Johann, Dominik Sturm, Karoline Nemes, Stefan Schönberger, Till Milde, Brigitte Bison, Monika Warmuth‐Metz, Torsten Pietsch, Ulrich Schüller, Arend Koch, David Capper, Martin Hasselblatt, Christian Thomas, Christian Hagel, Stefan M. Pfister, Felix Sahm, David T. W. Jones, Martin U. Schuhmann, Jürgen Krauss, Pedram Emami, Ahmed El Damaty, Rolf D. Kortmann, Rudolf Schwarz, Jürgen Debus, Mechthild Krause, Fabian Pohl, Holger Ottensmeier, Lisa Bußenius, Katja Baust, Andreas Faldum, Cecile Ronckers, Desiree Grabow, Martin Benesch, Thomas Perwein, Karin Dieckmann, Irene Slavc, Johannes Gojo, Nicolas U. Gerber, André O. von Bueren, Katrin Scheinemann, Gabriele Calaminus, Beate Timmermann, Ulrich‐Wilhelm Thomale, Martin Mynarek   +59 more
wiley   +1 more source

Patient Activation in Childhood, Adolescent, and Young Adult Cancer Survivors: Current Insights and Implications for Survivorship Care—A Systematic Review From the e‐QuoL Project

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Purpose Patient activation—encompassing knowledge, confidence, and skills in managing individual's health—is a cornerstone of person‐centered care. However, its significance among childhood, adolescent, and young adult cancer survivors (CAYACS) remains unexplored. This article examines the application of the 13‐item Patient Activation Measure (
Charlotte Demoor‐Goldschmidt, Anne Maas, Gisela Michel, Amandine Bertrand, Kristen E. T. Thornton, Martine Bellanger, Anna‐Liesa Filbert, Desiree Grabow, Monica Muraca, Katharina Roser, Sara Oberti, Jelena Roganovic, Hanne Cathrine Lie   +12 more
wiley   +1 more source

Study on the Influence of Distributed Propeller Slipstream Effects Considering Lift-Enhancing Characteristics

Aerospace Research Communications
This study investigates the slipstream effect generated by a distributed propeller configuration on an aircraft designed for lift enhancement. A numerical simulation approach adopting the Multiple Reference Frame (MRF) method is implemented to assess the
Ziqi Lan, Min Zhong, Yue Xu, Yuhang Wang, Haitao Zhu, Yan Li   +5 more
doaj   +1 more source