Results 91 to 100 of about 4,526 (269)
Large-amplitude resonant combustion in liquid rocket engine chambers - Some aspects of initiation [PDF]
Large amplitude, high frequency resonant combustion initiation in rocket engine ...
Kovitz, A. A.
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Non‐Equilibrium Synthesis Methods to Create Metastable and High‐Entropy Nanomaterials
Advanced Science, EarlyView.ABSTRACT Stabilizing multiple elements within a single phase enables the creation of advanced materials with exceptional properties arising from their complex composition. However, under equilibrium conditions, the Hume–Rothery rules impose strict limitations on solid‐state miscibility, restricting combinations of elements with mismatched crystal ...
Shuo Liu +3 more
wiley +1 more source
Index to NASA Tech Briefs, 1975 [PDF]
, 1976 This index contains abstracts and four indexes--subject, personal author, originating Center, and Tech Brief number--for 1975 Tech ...
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Sulfide‐Based Electrolytes for All‐Solid‐State Sodium Batteries
Advanced Energy Materials, EarlyView.This review covers the structural features and synthesis strategies of sulfide‐based solid electrolytes, as well as critical challenges related to conductivity, interfacial and moisture stability, and scaling‐up for practical application in Sodium‐based All Solid‐State Batteries.
Han Yang +6 more
wiley +1 more source
Advanced Energy Materials, EarlyView.In this work, a self‐restructuring Fe‐based perovskite catalyst is developed, leveraging in situ amorphization to achieve a “self‐improving” behavior for hydrogen evolution. When integrated into a custom‐built membrane‐less electrolyzer, the system demonstrates a record‐breaking 1000 h stability, providing a robust and practical pathway for the ...
Yixin Bi +8 more
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Effects of Fuel Penetration on the RDE Performance with JISC Injector Configuration
AerospaceThis study investigates the operational characteristics of the Rotating Detonation Engine (RDE), with a focus on fuel injector design. Inspired by the similarity between the fuel injection structure of RDE and the Jet in Supersonic Crossflow (JISC) of a ...
Gyeong-Ui Mo +4 more
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Effect of Injection Scheme on Mixing Characteristic of Methane-Oxygen Rotating Detonation Engine [PDF]
Hangkong bingqiRotating detonation engine is known as a new concept engine which has the property of self-pressurization and continuous thrust supply. It has already shown ambitious potential for applications in the aviation and aerospace field.
Liu Xiangyu, Zhao Nannan, Zhu Long, Huang Yakun, Wang Yuanding, Zheng Quan, Weng Chunsheng
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Numerical Analysis of a Rotating Detonation Engine in the Relative Reference Frame [PDF]
A two-dimensional, computational fluid dynamic (CFD) simulation of a semi-idealized rotating detonation engine (RDE) is described. The simulation operates in the detonation frame of reference and utilizes a relatively coarse grid such that only the ...
Paxson, Daniel E.
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Parametric Study of High Frequency Pulse Detonation Tubes [PDF]
, 2008 This paper describes development of high frequency pulse detonation tubes similar to a small pulse detonation engine (PDE). A high-speed valve injects a charge of a mixture of fuel and air at rates of up to 1000 Hz into a constant area tube closed at one
Cutler, Anderw D.
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Wirelessly Powered Soft Magnetic Robot with Microneedle for Electrical Stimulation and Drug Delivery
Advanced Intelligent Systems, EarlyView.A wirelessly powered soft magnetic robot integrates microneedles to enable dual functions: electrical stimulation (86.7% efficiency at 6 cm, tunable 0–20 V voltage, 0.4–50 ms pulses) and drug delivery. It switches surfaces via magnetic fields for gastrointestinal tract locomotion and treatment, with in vitro validation in fresh pig gut showing ...
Song Zhao +8 more
wiley +1 more source