Results 71 to 80 of about 272,623 (306)

Geometric nonlinearities of aircraft systems [PDF]

, 2008
Nonlinearities due to geometric effects, in particular, via angular variables that are not small, are important for aircraft operation. Geometric nonlinearities have a strong effect on the dynamics of the aircraft system under consideration, and they are
Thota, P, B. Krauskopf, Krauskopf, B., Lowenberg, M., Thota, P., M. Lowenberg, Lowenberg, MH, Krauskopf, B, P. Thota   +8 more
core   +1 more source

Fundamentals of Thermal Transport and Energy Conversion in Ultra‐High Temperature Ceramics: From Microscale Mechanisms to Macroscopic Properties

Advanced Science, EarlyView.
This review critically examines thermal transport and radiative properties of ultra‐high temperature ceramics for hypersonic flight, advanced nuclear systems, and next‐generation energy conversion devices. It explores phonon–photon–electron interactions, microstructural engineering, thermoelectric conversion, and machine learning‐accelerated multiscale
Zhipeng Pei, Yue Li, Jiayu Xing, Yue Zhu, Ru Zhang, Huan Wu, Zihao Qin, Gang Pei, Man Li   +8 more
wiley   +1 more source

Aircraft year book. [PDF]

Editor: 1919- F.L. Faurote.Latest issue consulted: 1939.Description based on: 1919 (surrogate); title from title page.Issues for also called Mode of access: Internet.Issued by: Manufacturers Aircraft Association, Inc., 1919-1921; by: Aeronautical ...
Manufacturers Aircraft Association., Faurote, Fay Leone, d. 1938, ed., Aircraft Industries Association of America., Aeronautical Chamber of Commerce of America.   +3 more
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A Folded, Structure‐Integrated Bimodal Sensor Enabling Non‐Contact and Tactile Perception for Intelligent Robots

Advanced Science, EarlyView.
A foldable bimodal sensor integrates a triboelectric nanogenerator and graphene piezoresistive effect into a monolithic laser‐induced graphene film. It enables synchronous non‐contact and tactile perception, achieving a distance of 110 mm, a sensitivity of 11.2 kPa−1, and a response time of 10 ms.
Weixiong Yang, Yuhan Guo, Mingguang Han, Bin Feng, Yuan Ma, Bingang Xu, Fu Liu, Dan Wang, Pingping Hao, Xilun Ding, Sida Luo   +10 more
wiley   +1 more source

Simulation of Transient Temperature and Clearance after Shutdown of Aeroengine Based on CFD and FEA Coupled Models

Shock and Vibration
It is crucial to comprehend the heat soak phenomenon, which may result in a significant temperature increase after the shutdown followed by a gradual decrease. This could bring potential risks for the engine including oil coking.
Xuanming Ge, Yan Gao, Wei Gu, Dongyu Sui, Lingling Yue   +4 more
doaj   +1 more source

Analysis method of flight crew human factors in system safety assessment

Hangkong gongcheng jinzhan
With the improvement of high complexity and automation level of the aircraft systems，pilots are often ill-prepared to cope with an actual emergency or failure，and their corrective actions may be erroneous，delayed or incomplete.
LIU Huixing, RUAN Hongze, LI Xianping, FENG Zhen   +3 more
doaj   +1 more source

Optimization of Powerful Two-stage Screw Centrifugal Pump

MATEC Web of Conferences, 2018
The article presents a refining method for a two-stage screw centrifugal pump by the joint usage of mathematical optimization software IOSO, meshing complex NUMECA and CFD software ANSYS CFX.
Baturin Oleg, Popov Grigorii, Kolmakova Daria, Zubanov Vasilii, Novikova Julia, Korneeva Anastasia   +5 more
doaj   +1 more source

Research on Online Flocculation Purification Method for The Centralized liquid supply and chip removal system [PDF]

E3S Web of Conferences
This work analysed the principle of flocculation purification method and the flocculation purification effect of fully synthesized water-based cutting fluid under experimental conditions, and the anti-corrosion performance of the purified cutting fluid ...
Xu Qiang, Yuan Shihua, Guo Ruihua, Dai Bin, Zhang Weiwei, Dai Liangqiang, Wang Yu   +6 more
doaj   +1 more source

Supercritical CO2‐Induced Porous MXene Films for Electromagnetic Interference Shielding and Infrared Stealth

Advanced Science, EarlyView.
The phase transition of supercritical CO2 induces the foaming of dense MXene film without compromise inherent structure of MXene nanosheet. The foamed porous MXene film manifests remarkable EMI shielding and infrared thermal camouflage performances. Moreover, the foaming strategy is broadly adaptable and can be extended to other two‐dimensional films ...
Hui Zhao, Shuai Li, Jiabei He, Tong Gao, Jingfeng Wang, Dongxiao Kan, Wangtu Huo, Lixin Chen   +7 more
wiley   +1 more source

Acoustic properties of aircraft wake vortices [PDF]

, 2008
The noise generation by aircraft wake vortices has been studied numerically and experimentally. The numerical study revealed a relation between the circulation Γ, the vortex core size rc and the frequency fa of the peak level in the vortex noise spectra,
Böhning, P., Michel, U., Baumann, R.
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