Results 141 to 150 of about 358,513 (400)
Entangled Multistable Origami with Reprogrammable Stiffness Amplification and Damping
Advanced Functional Materials, EarlyView.This study introduces a class of origami‐inspired metamaterials that overcome the limitations of existing multistable metamaterials by eliminating the need for rigid lateral confinements. Panel entanglement, snap‐through interactions, and instabilities synergy enable them to achieve extensive shape‐shifting, enhanced stiffness, and remarkable energy ...
Amin Jamalimehr +2 more
wiley +1 more source
LubricantsIn aerospace applications, engine parts, especially those around the rotor blade tips, are coated with an abradable seal, a specific material layer. Its design produces a tighter seal without harming the blades by allowing it to wear down or “abrade ...
Anitha Kumari Azmeera +2 more
doaj +1 more source
Some field experience with subsynchronous vibration of centrifugal compressors [PDF]
A lot of large chemical fertilizer plants producing 1000 ton NH3/day and 1700 ton urea/day were constructed in the 1970's in China. During operation, subsynchronous vibration takes place occasionally in some of the large turbine-compressor sets and has ...
Du, Yun-Tian +5 more
core +1 more source
Advanced Functional Materials, EarlyView.The versatile precursor‐assisted soft sphere close packing during slot‐die coating is investigated with in situ X‐ray scattering. The soft crystallization pathways towards a close packing involve multistep structural transitions such as surface nucleation, in‐plane, and out‐of‐plane crystallization.
Guangjiu Pan +14 more
wiley +1 more source
Study on thermal analysis simulation and test of propellant refueling process for optical module
Xibei Gongye Daxue XuebaoPropellant refueling is important for long-term operation of the optical module in orbit. However, its thermal environment is harsher than on previous missions. Therefore, thermal control of the entire process is required.
LU Wei +4 more
doaj +1 more source
Modeling and analysis of the TF30-P-3 compressor system with inlet pressure distortion [PDF]
Circumferential inlet distortion testing of a TF30-P-3 afterburning turbofan engine was conducted at NASA-Lewis Research Center. Pratt and Whitney Aircraft analyzed the data using its multiple segment parallel compressor model and classical compressor ...
Banks, G. A., Mazzawy, R. S.
core +1 more source
Advanced Functional Materials, EarlyView.This study presents a capacitive hydrogen sensor with a simple structure and process. Sonication‐induced Pd nanogaps modulate the effective electrode area in response to hydrogen concentration, resulting in capacitance changes within a range predefined by physical parameters.
Sang‐kil Lee +9 more
wiley +1 more source
Study of blade aspect ratio on a compressor front stage aerodynamic and mechanical design report [PDF]
A single stage compressor was designed with the intent of demonstrating that, for a tip speed and hub-tip ratio typical of an advanced core compressor front stage, the use of low aspect ratio can permit high levels of blade loading to be achieved at an ...
Burger, G. D., Lee, D., Snow, D. W.
core +1 more source
Quantifying Electron and Ion Transfers in Contact Electrification with Ionomers
Advanced Functional Materials, EarlyView.The concurrent existence of both electron and ion transfers in solid‐ionomer contact electrification is reported. The ion transfer contributes significantly to the process of contact electrification, especially at high humidity, although only less than 2% of ions participate in the ion transfer, suggesting that there is room for further performance ...
Xiaoting Ma +5 more
wiley +1 more source
Turbofan compressor dynamics during afterburner transients [PDF]
The effects of afterburner light-off and shut-down transients on compressor stability were investigated. Experimental results are based on detailed high-response pressure and temperature measurements on the Tf30-p-3 turbofan engine.
Kurkov, A. P.
core +1 more source