Results 91 to 100 of about 147,710 (303)

Self‐Maintained Thermal Charging Cells for the Efficient Harvesting of Waste Heat at Elevated Temperatures

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Thermal charging cells (TCS) face two main challenges that limit their practical applications: 1) Still lacking the systems suitable for operation under higher temperature environments, and 2) there are limitations in the self‐sustaining performance of continuous discharge under temperature differences, which holds critical significance for the real ...
Tingting Meng, Yimin Xuan, Yunjie Xiong
wiley   +1 more source

ANTI-AIRCRAFT MISSILE COMPLEXES DIAGNOSIS AND REPAIR SYSTEM MODELING BY USING THE CLOSED QUEUING SYSTEMS

open access: yesSučasnì Informacìjnì Tehnologìï u Sferì Bezpeki ta Oboroni, 2015
The article explored the model system diagnosis and repair of anti-aircraft missile complexes as closed queuing system. As the technical basis of the system model is considered a modern development of State Enterprise “Ukroboronservis” – universal mobile
Oleksandr Y. Permiakov   +3 more
doaj  

Analysis of supersonic intake design for multi-row disk intake device under varying mach numbers and angle of attacks [PDF]

open access: yesFME Transactions
This research investigates the performance of a MRD intake design for supersonic aircraft engines, focusing on its behavior under varying Mach numbers and angles of attack.
Sinha Jayanta   +3 more
doaj   +1 more source

A simplified analysis of propulsion installation losses for computerized aircraft design [PDF]

open access: yes
A simplified method is presented for computing the installation losses of aircraft gas turbine propulsion systems. The method has been programmed for use in computer aided conceptual aircraft design studies that cover a broad range of Mach numbers and ...
Bailey, R. O.   +2 more
core   +1 more source

Hydrogen Fuel Cell Technologies for Decarbonization: Opportunities, Challenges, and Strategic Pathways—A Comprehensive Review

open access: yesEnergy 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

Numerical Investigation on Flow Separation Control for Aircraft Serpentine Intake with Coanda Injector

open access: yesFluids
Modern military aircraft integrate a large number of high-power-density electronic devices, which leads to a rapid increase in thermal load and poses significant challenges for heat dissipation.
Zhan Fu   +5 more
doaj   +1 more source

Setting the Record Straight: The Intellectual Legacy of H. Igor Ansoff (1918–2002)

open access: yesStrategic Change, EarlyView.
ABSTRACT This study presents a comprehensive annotated bibliography of H. Igor Ansoff's intellectual contributions, addressing significant gaps in existing citation databases such as Scopus and Web of Science, which capture only 9 to 15 percent of his work.
Richard W. Puyt
wiley   +1 more source

Solving the Airline Recovery Problem By Using Ant Colony Optimization

open access: yesInternational Journal of Industrial Engineering and Production Research, 2010
In this paper an Ant Colony (ACO) algorithm is developed to solve aircraft recovery while considering disrupted passengers as part of objective function cost.
doaj  

Extended moment arm anti-spin device [PDF]

open access: yes, 1985
A device which corrects aerodynamic spin is provided in which a collapsible boom extends an aircraft moment arm and an anti-spin parachute force is exerted upon the end of the moment arm to correct intentional or inadvertent aerodynamic spin.
Whipple, R. D.
core   +1 more source

Additive Manufacturing of Cobalt Iron Oxide‐Based Photopolymer Resin Magnetoactive Polymer Composites Through Stereolithography

open access: yesMacromolecular 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

Home - About - Disclaimer - Privacy