Results 51 to 60 of about 569,378 (221)

Experimental Investigation on Flame Chemiluminescence and Flow Characteristics of a Reverse-Flow Combustor

International Journal of Aerospace Engineering, 2022
The reverse-flow combustor is extensively applied in small engines due to its compact structure. The cold-state flow characteristics, the ignition process, and flame chemiluminescence characteristics of the reserve-flow combustor were investigated ...
Ge Hu, Jianzhong Li, Wu Jin, Jingzhou Zhang, Li Yuan   +4 more
doaj   +1 more source

Dynamic Performance Enhancement of a High‐Agility Hypersonic Mechanical System via a Learning‐Augmented Robust Control Architecture

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT The design of control systems for high‐agility mechanical systems operating in extreme environments is a significant challenge in nonlinear dynamics. This paper addresses the complex dynamic control problem of a hypersonic interceptor, modeled as a multi‐input multi‐output (MIMO) mechanical system characterized by strong aerodynamic cross ...
Mohammad Mahdi Soori, Seyed Hossein Sadati   +1 more
wiley   +1 more source

A review of recent advances in the application of machine learning algorithms for gas turbine combustion

Propulsion and Energy
With the rapid advancement of computing power and significant progress in machine learning (ML) algorithms, ML has shown immense potential across a wide range of fields, particularly in simulation, experimental analysis, and condition monitoring.
Da Mo, Yuzhen Lin, Yixiong Liu, Yuchen Wang, Ziyu Qin, Xiao Han   +5 more
doaj   +1 more source

Compensating cooling on the suction surface of the blade by the jets of the film holes on the endwall

Case Studies in Thermal Engineering
The coolant ejected from the film holes on the gill region of the blade deflects to the blade tip in the action of the cascade passage vortices, resulting in the local film cooling failure on the suction surface near the endwall. This paper introduces an
Changyu Zhao, Junyu Zhu, Wei Zhang, Zhiqi Zhao, Guangchao Li, Chun Li   +5 more
doaj   +1 more source

In Situ Crystallization‐Induced Coherent Interfaces for Simultaneous Toughening and Hardening of Reinforced Silicon Carbide Nanoceramic

National Materials, EarlyView.
This work reports the fast hot‐pressing sintering of precursor‐derived amorphous SiC raw powders to prepare HfC‐reinforced SiC nanoceramic with coherent HfC/SiC interfaces. Through the synergistic effects of nanocrystallization strengthening and interface engineering, the simultaneous enhancement of three typically competing mechanical properties, that
Shiyu Yin, Wanhao Luo, Jianlong Kuang, Weidong Ge, Jinglong Qiao, Haiyue Xu, Yana Wang, Fei Li, Yixuan Gao, Yiyao Ge, Haifeng Yu, Jian Jiao, Kexin Chen   +12 more
wiley   +1 more source

Heat transfer error analysis of high-temperature wall temperature measurement using thermocouple

Case Studies in Thermal Engineering
Thermocouples are widely employed as the temperature measuring element for an aero-engine. However, due to the unique characteristics of the aero-engine test environment, there exist significant temperature measurement errors of the thermocouple.
Zhihai Kou, Rongxiang Wu, Qingyin Wang, Binbin Li, Congzheng Li, Xunyan Yin   +5 more
doaj   +1 more source

Sliding Mode Control in Aerospace Applications: A Survey

International Journal of Robust and Nonlinear Control, EarlyView.
ABSTRACT Sliding mode control (SMC) enjoys robustness to matched and unmatched (in the case of minimum phase input‐output dynamics) bounded perturbations, and finite time convergence. Second‐order and higher‐order sliding mode control systems (2‐SMC/HOSMC) retain all the advantages of sliding mode control, but in addition can be applied to systems of ...
Yuri Shtessel, Christopher Edwards
wiley   +1 more source

A Compact Annular Electrostatic Clutch Joint: Dynamic Response Modeling and Time‐Sharing Control for Underactuated Robots

SmartBot, EarlyView.
Electrostatic clutches offer programmable variable stiffness for multi‐DOF robots, but their continuous motion is usually bottlenecked by spatial constraints and detachment delays. Here, the authors report a compact annular electrostatic clutch joint with a biphasic amplitude‐frequency modulation strategy to rapidly mitigate residual polarization ...
Haochen Yong, Jian Wang, Zhisheng Xia, Zhexuan Li, Han Ding, Zhigang Wu   +5 more
wiley   +1 more source

A Flexible Thin‐Film Tactile Sensor for Robust Force and Position Sensing Under Extensive Deformations

SmartBot, EarlyView.
Ultrathin tactile interfaces that simultaneously perceive force and contact position are essential for soft robotics and wearable systems. Here, a 180‐μm layer‐structured tactile sensor integrates normal force sensing with continuous two‐dimensional localization while maintaining stable performance under large deformation.
Peng Yan, Zheng Wang, Hailin Huang, He Zhang, Bing Li   +4 more
wiley   +1 more source

Resource reallocation across successive systemic innovations: How Rolls‐Royce shaped the evolution of the turbojet, turboprop, and turbofan

Strategic Management Journal, EarlyView.
Abstract Research Summary Despite the importance of resource reallocation in shaping a variety of strategic outcomes, strategy scholars have paid only limited attention to the processes by which firms reallocate their resources across successive systemic innovations.
Gino Cattani, Mariano Mastrogiorgio, Giuseppe Carignani   +2 more
wiley   +1 more source