Results 101 to 110 of about 542,371 (346)
Energy Science &Engineering, EarlyView.ABSTRACT Hydrogen (H2) fuel cells are increasingly recognized as a cornerstone technology in the global transition toward clean energy due to their high efficiency and zero‐emission characteristics. This review synthesizes recent progress, challenges, and strategic pathways for the deployment of H2 fuel cells across the transportation, power generation,
Yash Sachin Gupta +5 more
wiley +1 more source
Overview of high performance aircraft propulsion research [PDF]
The overall scope of the NASA Lewis High Performance Aircraft Propulsion Research Program is presented. High performance fighter aircraft of interest include supersonic flights with such capabilities as short take off and vertical landing (STOVL) and/or ...
Biesiadny, Thomas J.
core +1 more source
NASTRAN applications to aircraft propulsion systems [PDF]
, 1975 The use of NASTRAN in propulsion system structural integration analysis is described. Computer support programs for modeling, substructuring, and plotting analysis results are discussed.
Beste, D. L., White, J. L.
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Energy Science &Engineering, EarlyView.This paper aims to provide a robust design approach for HAWTs operating in shear flow. This study fills a critical research gap by integrating BEM and vortex theories for blade design in non‐homogeneous inflow conditions. The authors of the paper made an effort to develop and test an experimentally unsophisticated model of a turbine working in shear ...
Agnieszka Dorota Woźniak +2 more
wiley +1 more source
A real time Pegasus propulsion system model for VSTOL piloted simulation evaluation [PDF]
A real time propulsion system modeling technique suitable for use in man-in-the-loop simulator studies was developd. This technique provides the system accuracy, stability, and transient response required for integrated aircraft and propulsion control ...
Creekmore, R. +2 more
core +1 more source
Macromolecular Materials and Engineering, EarlyView.In this study, novel resin/cobalt iron oxide magnetic actuation polymer composites (MAPCs) are synthesized and optimized for stereolithography (SLA)‐based 3D printing. Printing parameters are tuned for dimensional accuracy and print quality. Comprehensive physicochemical, mechanical, and magnetic characterization identifies the optimal formulation ...
Ambreen Afridi +2 more
wiley +1 more source
Multiple-Purpose Subsonic Naval Aircraft (MPSNA): Multiple Application Propfan Study (MAPS) [PDF]
Study requirements, assumptions and guidelines were identified regarding carrier suitability, aircraft missions, technology availability, and propulsion considerations. Conceptual designs were executed for two missions, a full multimission aircraft and a
Engelbeck, R. M. +4 more
core +1 more source
Risk Times in Mission‐Oriented Systems
Quality and Reliability Engineering International, EarlyView.ABSTRACT This article assesses risk times in mission‐oriented systems with high safety standards. We examine critical times under two safety policies. The first requires that the system's reliability function, known the first failure of the components, must exceed a reliability level throughout the mission.
Antonio Arriaza +2 more
wiley +1 more source
Concept Evaluation of Radical Short–Medium-Range Aircraft with Turbo-Electric Propulsion
AerospaceAmbitious targets for the coming decades have been set for further reductions in aviation greenhouse gas emissions. Hybrid electric propulsion (HEP) concepts offer potential for the mitigation of these aviation emissions. To investigate this potential in
W. J. Vankan +4 more
doaj +1 more source