IDENTIFICATION OF NOMINAL DYNAMIC CHARACTERISTICS OF AIRCRAFT GAS TEMPERATURE SENSORS by A. F. Sabitov, I. A. Safina

“…The aim of the study was to develop methods of recalculation of a test results of a limited number of gas temperature sensors that were received at certified airflow equipment and to get nominal dynamic characteristics of a particular type of gas temperature sensors in the anticipated operating conditions.This study offers the algorithm for the identification of the nominal dynamic characteristics of gas temperature sensors that are used to measure the temperature of gases in aircraft gas turbine engines. The algorithm makes it possible to 1) register the transient characteristics of gas temperature sensors of a particular type at a predetermined rate of air flow, 2) calculate the heat transfer coefficient between the gas temperature sensors and the air flow at each airflow rate, 3) measure the average transient characteristics of the gas temperature sensors at each airflow rate, 4) set the parameters of the hyperbolic function of the nominal variables of the time constants of selected gas temperature sensors from the heat transfer coefficient. …”
Get full text

Optimal configuration strategy of energy storage considering flexible response of high energy-consuming industrial and mining loads in independent microgrid by Cuomu Yixi, Xiaoming Liu, Yu Li, Jingming Tan, Zhihong Liu, Basang Danzeng, Lei Wang

“…Based on this, incorporating the regulation boundaries of photovoltaic (PV) units, gas turbine units, concentrated solar power (CSP), ES system, and flexible lithium mining loads, an ES capacity optimization model is constructed to minimize the comprehensive system capital and operation costs in independent microgrid. …”
Get full text

Research progress in low-cost preparation process of continuous fiber-reinforced silicon carbide ceramic matrix composites by SHANG Jianzhao, WU Xiaofei, CAO Yejie, LYU Yunlei, LI Jingxin, WANG Jing, DONG Ning, LIU Yongsheng

Get full text

Research on Simulation and Performance Optimization of Mach 4 Civil Aircraft Propulsion Concept by Min Chen, Zihao Jia, Hailong Tang, Yi Xiao, Yonghang Yang, Feijia Yin

Get full text

Wear Resistance of Ceramic Cutting Inserts Using Nitride Coatings and Microtexturing by Electrical Discharge Machining by Marina A. Volosova, Anna A. Okunkova, Elena Y. Kropotkina, Enver S. Mustafaev, Khasan I. Gkhashim

“…Today, the machining of heat-resistant alloys based on triple, quad, or penta equilibria high-entropy alloy systems of elements (ternary, quaternary, quinary iron-, titanium-, or nickel-rich alloys), including dual-phase by Gibb’s phase rule, steels of the austenite class, and nickel- and titanium-based alloys, are highly relevant for the airspace and aviation industry, especially for the production of gas turbine engines. Cutting tools in contact with those alloys should withstand intensive mechanical and thermal loads (tense state of 1.38·10⁸–1.54·10⁸ N/m², temperature up to 900–1200 °C). …”
Get full text

HfC–HfO2 modified high/superhigh temperature thermal protection coating for superior hot corrosion resistance and antioxidation performance by Zhiyun Ye, Shuqi Wang, Shuang Yu, Xinrui Zhao, Yongchun Zou, Guoliang Chen, Lei Wen, Lina Zhao, Guangxi Zhang, Yaming Wang, Jiahu Ouyang, Dechang Jia, Yu Zhou

“…With advances in the thrust-weight ratio, the service temperature of gas turbine engines even exceeds 1500 °C, which is urgent for the development of high/superhigh-temperature thermal protection systems (TPSs) for long-term service. …”
Get full text

Thermal radiation effects of ternary hybrid nanofluid flow in the activation energy: Numerical computational approach by Hakeem Ullah, Syed Arshad Abas, Mehreen Fiza, Aasim Ullah Jan, Ali Akgul, Magda Abd El-Rahman, Seham M. Al-Mekhlafi

“…Rotating machinery and gas turbine rotators are some industrial applications of hybrid nanofluids as heat transport fluids. …”
Get full text