Results 31 to 40 of about 44,118 (256)

Study of Free‐Space Optical Quantum Network: Review and Prospectives

Advanced Science, EarlyView.
Free from the constraints of fiber connections, free‐space quantum network enables longer and more flexible quantum network connections. This review summarizes and comparatively analyzes free‐space quantum network experiments based on ground stations, satellites, and mobile platforms.
Hua‐Ying Liu, Zhenda Xie, Shining Zhu
wiley   +1 more source

THE MARKET AND THE FUTURE OF TURBINE POWERED LIGHT HELICOPTERS

Авіаційно-космічна техніка та технологія, 2020
In the introductory part of the article, it is provided brief information about the main activity of JSC “Element”- developer and manufacturer of electronic control systems for aircraft engines, in particular unit RDTs-450M for AI-450M helicopter ...
Вадим Владимирович Нерубасский
doaj   +1 more source

Smart Bioinspired Material‐Based Actuators: Current Challenges and Prospects

Advanced Intelligent Systems, Volume 7, Issue 3, March 2025.
This work gathers, in a review style, an extensive and comprehensive literature overview on the development of autonomous actuators based on synthetic materials, bringing together valuable knowledge from several studies. Furthermore, the article identifies the fundamental principles of actuation mechanisms and defines key parameters to address the size
Alejandro Palacios, Léon Chiriatti, Simon Poppinga, Thomas Speck, Vincent Le Houérou   +4 more
wiley   +1 more source

Examination of Applicability of Engine Condition Trend Monitoring to Bell 2068 Ill Helicopter

Promet (Zagreb), 2002
Because of the advantages of turboshaft engine conditiontrend monitoring, it is in the interest of the Croatian Air Forceto examine its applicability in Bell 206B Ill helicopter maintenancesystem.The paper deals with the basic of turboshaft engine ...
Davor Mistrić, Leonard Eleršek, Ernest Bazijanac   +2 more
doaj   +1 more source

A method for reducing parasite drag of medium transport helicopter

Авіаційно-космічна техніка та технологія, 2023
At present, more and more stringent emission requirements are being imposed on helicopters. Carbon dioxide emissions are a function of fuel consumption, and fuel consumption is directly dependent on the power required for a helicopter cruise flight.
Mykhaylo Kybalnyy, Oleksii Prytula, Sergii Degtiarenko, Kateryna Izviekova   +3 more
doaj   +1 more source

Risk‐aware safe reinforcement learning for control of stochastic linear systems

Asian Journal of Control, EarlyView.
Abstract This paper presents a risk‐aware safe reinforcement learning (RL) control design for stochastic discrete‐time linear systems. Rather than using a safety certifier to myopically intervene with the RL controller, a risk‐informed safe controller is also learned besides the RL controller, and the RL and safe controllers are combined together ...
Babak Esmaeili, Nariman Niknejad, Hamidreza Modares   +2 more
wiley   +1 more source

Justification of geometric parameters of the engine air particle separator

Вестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение, 2022
The Engine Air Particle Separator is considered to be the most important element for maintaining the performance of helicopter engines when operating in dusty air conditions.
A. S. Gishvarov, A. Rh. Rakhimov
doaj   +1 more source

Guiding Healthcare Organizations in Strategic Pathways: Assessing a Dynamic Adaptive Model

The International Journal of Health Planning and Management, EarlyView.
ABSTRACT In an era of increasing uncertainty and complexity, healthcare decision makers must navigate dynamic environments with greater awareness and adaptability. This study assesses what the impact is of the Dynamic Adaptive Decision Support model (DADS) on stewarding capacity by fostering adaptability, resilience, and strategic foresight.
Anke Aarninkhof‐Kamphuis, Hans Voordijk, Geert Dewulf   +2 more
wiley   +1 more source

Effect of Bearing Support Parameters on the Radial and Angular Deformation of Rotor Shaft Gear Based on CRDRS Support Configuration with Intermediate Bearing Support

Machines
The rotor shaft is a critical component responsible for transmitting engine power to the helicopter’s rotor. Deformation of the rotor shaft can affect the meshing performance of the output stage gears in the main gearbox, thereby affecting load transfer ...
Xiaojie Yuan, Xiaoyu Che, Rupeng Zhu, Weifang Chen   +3 more
doaj   +1 more source

Applicability of the steady‐state oxygen stable isotope method for estimating metabolism in low‐productivity Arctic lakes

Limnology and Oceanography: Methods, EarlyView.
Abstract Metabolism is a key property of lake ecosystem functioning, but logistical challenges make it difficult to estimate across remote regions. The steady‐state dissolved oxygen (DO) stable isotope method (18O method) estimates metabolism from discrete water samples and thus enables large‐scale surveys.
Fredrik Alriksson, Marcus Klaus, Cristian Gudasz, Matthew Bogard, Gerard Rocher‐Ros, Dominic Vachon, Jan Karlsson   +6 more
wiley   +1 more source