Results 71 to 80 of about 417,773 (296)

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

open access: yesAdvanced 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   +8 more
wiley   +1 more source

Effect of rolling texture on bearing capacity of aircraft repair patches and replaced panels

open access: yesAviation
The article combines issues related to biaxial fatigue loading, corrections for equivalent stress calculations, and the practical application of new knowledge regarding biaxial fatigue in the aviation industry.
Mykhailo Karuskevych   +3 more
doaj   +1 more source

Calculation Analysis on the Door’s Contact Force of theFlight Lock Mechanism for Civil Airplane

open access: yesHangkong gongcheng jinzhan, 2018
It is of great significance to study the contact force in the aircraft’s flight lock mechanism for the design of the flight lock mechanism of the civil aircraft. The function and main design basis of flight lock are firstly introduced.
Liu Chengye, Huang Zhenting, Zhou Ying
doaj   +1 more source

Hypersonic aircraft design [PDF]

open access: yes
A hypersonic aircraft is designed which uses scramjets to accelerate from Mach 6 to Mach 10 and sustain that speed for two minutes. Different propulsion systems were considered and it was decided that the aircraft would use one full scale turbofan-ramjet.
Alkamhawi, Hani   +5 more
core   +1 more source

Supersonic aircraft Patent [PDF]

open access: yes, 1967
Design of supersonic aircraft with novel fixed, swept wing ...
Carlson, H. W.   +4 more
core   +1 more source

Programmable Multifunctional Bistable Structures for Energy Transfer and Dissipation

open access: yesAdvanced 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   +6 more
wiley   +1 more source

A Bottom‐Up Design Framework for Multifunctional Lattice Metamaterials

open access: yesAdvanced 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   +13 more
wiley   +1 more source

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

open access: yesAdvanced 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   +4 more
wiley   +1 more source

Single‐Crystal PZT‐Driven Organic Piezo‐Phototronic Adaptive Transistors Toward Advanced Spatiotemporal Visual Computing

open access: yesAdvanced Science, EarlyView.
Here, we propose a single‐crystal PZT‐based piezo‐phototronic organic adaptive memory transistor (OAMT), achieving a record memory window capacity factor (γ) of 0.87 at a low SS of 200 mV/decade via efficient multi‐field control. The device achieves a high recognition accuracy ∼ 90% in neuromorphic simulations, demonstrates robust fault tolerance under
Chenhao Xu   +8 more
wiley   +1 more source

A Mission Performance Evaluation Approach for Civil UAS Applications

open access: yesMATEC Web of Conferences, 2018
The Unmanned Aircraft Systems (UAS) mission fulfilment grade is determined by performance capabilities of the system elements, such as UAV flight performance, sensor parameters, energy consumption and communication abilities.
Fokina Ekaterina   +2 more
doaj   +1 more source

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