Results 91 to 100 of about 1,178,972 (334)

Hierarchical Strain‐Modified Medium‐Entropy Carbide Ceramics Exhibit Exceptional Ablation Resistance up to 2400°C

Advanced Science, EarlyView.
A novel strategy is developed by doping reduced graphene oxide (rGO) into a (HfZrTi)C medium‐entropy ceramic. This induces a hierarchical strain modification mechanism, synergistically inhibiting crack propagation at the microscale and dissipating stress at the mesoscale.
Junyi Xiao, Pengfei He, Lin Xue, Shujun Hu, Liliang Shao, Chuan Sun, Yunyun Ge, Jiangbo Cheng, Xiubing Liang   +8 more
wiley   +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

OpenAP: An Open-Source Aircraft Performance Model for Air Transportation Studies and Simulations

Aerospace, 2020
Air traffic simulations serve as common practice to evaluate different concepts and methods for air transportation studies. The aircraft performance model is a key element that supports these simulation-based studies.
Junzi Sun, J. Hoekstra, J. Ellerbroek
semanticscholar   +1 more source

Programmable Multifunctional Bistable Structures for Energy Transfer and Dissipation

Advanced Science, EarlyView.
Utilizing the energy conversion characteristics of asymmetric bistable beams, this study develops a programmable multifunctional system composed of multiple bistable beams for energy transfer and dissipation. The high energy density enables the system to demonstrate potential in transient scenarios such as target delivery and shock absorption ...
Xin Na, Jincong Zhang, Zhicheng Chen, Venkatarao Selamneni, Haotian Chen, Hadi Heidari, Morteza Amjadi   +6 more
wiley   +1 more source

Selectable towline spin chute system [PDF]

, 1991
An emergency spin recovery parachute is presented that is housed within a centrally mounted housing on the aft end of an aircraft and connected to a ring fitting within the housing.
Vairo, Daniel M., Whipple, Raymond D.
core   +1 more source

A Bottom‐Up Design Framework for Multifunctional Lattice Metamaterials

Advanced Science, EarlyView.
This study introduces a generative AI framework for designing multifunctional lattice metamaterials. The method combines 3D Gaussian voxel generation with deep learning, enabling greater design freedom and structural performance. The optimized lattice metamaterials achieve enhanced energy absorption by 40–200% compared to conventional structures and ...
Zongxin Hu, Quanqing Tao, Junhao Ding, Shuo Qu, Haitao Ye, Jun Wei Chua, Tianxiao Niu, Rui Li, Winston Wai Shing Ma, Haoming Mo, Hui Liu, Wei Zhai, Xinwei Li, Xu Song   +13 more
wiley   +1 more source

Aeroservoelastic analysis method for mixed-command fault of flight control system

Hangkong gongcheng jinzhan
Large civil aircraft fly-by-wire flight control systems may experience a fault condition where both normal mode and direct mode control commands are output simultaneously. It is necessary to propose a method to demonstrate the airworthiness compliance of
DING Luning, YANG Fei, LI Peng
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

A theoretical and experimental appraisal of airworthiness evaluation techniques for small light aeroplanes [PDF]

, 2005
This thesis was submitted for the degree of Doctor of Philosophy and awarded by the University of Southampton.A thorough evaluation of the airworthiness of a manned aircraft is vitally important, regardless of the size or function of the aircraft ...
Gratton, G.B.
core  

Combining the Pitcher and Lotus Plant: Supericephobic and Superhydrophobic Silicone Films

Advanced Science, EarlyView.
Based on bench‐top nanomolding of polydimethylsiloxane (PDMS) with optimized silicone oil content, we developed hierarchically structured silicone films by essentially combining the properties of the lotus and pitcher plant; particularly we are able to achieve water contact angle as high as 171° and ice adhesion strength as low as 11.5 kPa (i.e ...
Cliff L. W. Ng, Joshua Ham, Sanpreet Kaur, Clayton W. Schultz, Hua‐Zhong Yu   +4 more
wiley   +1 more source