Results 101 to 110 of about 43,755 (354)

TURBOSHAFT ENGINE THERMOGASDYNAMIC PARAMETERS CALCULATION METHOD BASED ON BLADE-TO BLADE DESCRIPTION OF TURBOMASHINES. PART II. STAGE AND MULTISTAGE COMPRESSORS PARAMETERS DETERMINATION

open access: yesАвіаційно-космічна техніка та технологія, 2019
Gas Turbine Engine (GTE) operating characteristics such as thrust (or power), specific fuel consumption and other cycle parameters on different regimes, can be determined by engine modeling and applying correspondent calculation method.
Людмила Георгиевна Бойко   +2 more
doaj   +1 more source

Stage-by-Stage and Parallel Flow Path Compressor Modeling for a Variable Cycle Engine [PDF]

open access: yes
This paper covers the development of stage-by-stage and parallel flow path compressor modeling approaches for a Variable Cycle Engine. The stage-by-stage compressor modeling approach is an extension of a technique for lumped volume dynamics and ...
Cheng, Larry   +2 more
core   +1 more source

Electronic Control System for Optimized Resonance Operation of Dielectric Elastomer Pumps through Self‐Sensing

open access: yesAdvanced Engineering Materials, EarlyView.
A powerful electronic control system enables a dielectric elastomer pump to operate at resonance, matching conventional pump performance. Using self‐sensing to reconstruct load pressure dynamically, the adaptive control adjusts resonance frequency accordingly.
Matthias Baltes   +3 more
wiley   +1 more source

Simulation of Casing Treatments of a Transonic Compressor Stage

open access: yesInternational Journal of Rotating Machinery, 2008
This article presents the study of casing treatments on an axial compressor stage for improving stability and enhancing stall margin. So far, many simulations of casing treatments on single rotor or rotor-stator configurations were performed.
M. Hembera, H.-P. Kau, E. Johann
doaj   +1 more source

Effect of casing treatment on performance of an inlet stage for a transonic multistage compressor [PDF]

open access: yes
An inlet stage of a transonic compressor was tested with three rotor tip casing treatment configurations: blade angle slots, circumferential grooves, and axial skewed slots.
Lewis, G. W., Jr.   +2 more
core   +1 more source

Potential of power recovery of a subsonic axial fan in windmilling operation [PDF]

open access: yes, 2013
During the last decades, efforts to find efficient green energy solutions have been widely increased in response to environmental concerns. Among all renewable energies, this paper is focused on wind power generation. To this end, a windmilling axial fan
Binder, Nicolas   +3 more
core  

Microcellular Poly (Ethylene‐Co‐Vinyl Acetate)/Lignin Nanocomposites for Soft Ferroelectrets

open access: yesAdvanced Engineering Materials, EarlyView.
Lignin valorization for advanced porous polymer nanocomposites development and an upscaling route for continuous manufacturing of soft ferroelectrets for energy harvesting are studied. This work examines the role of lignin and carbon nanotubes (CNT) in modifying the mechanical, dielectric, and ferroelectret properties of poly (ethylene‐co‐vinyl acetate)
Yuchen Lian   +5 more
wiley   +1 more source

Preliminary compressor design study for an advanced multistage axial flow compressor [PDF]

open access: yes
An optimum, axial flow, high pressure ratio compressor for a turbofan engine was defined for commercial subsonic transport service starting in the late 1980's.
Marchant, R. D., Marman, H. V.
core   +1 more source

Comparison of calculated and experimental cascade performance for controlled-diffusion compressor stator blading [PDF]

open access: yes, 1986
The mid-span section of a previously reported controlled-diffusion compressor stator has been experimentally evaluated in cascade. Measurements are taken over a range of incidence angles for blade chord Reynolds numbers from 470,000 to 690,000.
Sanger, N. L., Shreeve, R. P.
core   +1 more source

Programmable Reconfiguration of Hybrid 4D Chiral Metamaterials via Mechanical and Thermal Stimuli

open access: yesAdvanced Engineering Materials, EarlyView.
A class of hybrid chiral mechanical metamaterials is designed to achieve programmable reconfiguration through soft networks, hinges, and bilayer joints integrated with rigid units. Responsive to mechanical and thermal stimuli, these structures exhibit large volume changes, tunable deformation pathways, and both positive and negative thermal expansion ...
Yunyao Jiang, Siyao Liu, Yaning Li
wiley   +1 more source

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