Results 121 to 130 of about 101,154 (354)

Supercharged topping rocket propellant feed system [PDF]

open access: yes, 1979
A rocket propellant feed system utilizing a bleed turbopump to supercharge a topping turbopump is presented. The bleed turbopump is of a low pressure type to meet the cavitation requirements imposed by the propellant storage tanks.
Ginsburg, A.   +2 more
core   +1 more source

Sliding Doors: Frame Uptake and Rejection by Learners in a Museum‐Based Climate Learning Experience

open access: yesScience Education, EarlyView.
ABSTRACT Science education efforts that support public understanding of modern climate change are critically needed. However, implementing climate‐related learning experiences can be challenging, as public audiences tend to experience a wide range of understandings of and emotions around the issue. In light of these challenges, many scholars have posed
Lynne Zummo   +7 more
wiley   +1 more source

Active clearance control system for a turbomachine [PDF]

open access: yes, 1982
An axial compressor is provided with a cooling air manifold surrounding a portion of the shroud, and means for bleeding air from the compressor to the manifold for selectively flowing it in a modulating manner axially along the outer side of the stator ...
Coulson, C. E.   +2 more
core   +1 more source

Trading Strategies on Local Electricity Markets Using Agent‐Based Modelling and Reinforcement Learning: Vectors to Expand Energy Communities

open access: yesSystems Research and Behavioral Science, EarlyView.
ABSTRACT Energy communities (ECs) members have a high degree of heterogeneity. Agent‐based modelling (ABM) allows for the modelling of each entity as an agent with distinct characteristics and decision rules. This is particularly useful when the heterogeneity of agents affects outcomes.
Adela Bâra, Simona‐Vasilica Oprea
wiley   +1 more source

Enhancement of the gas turbine cooling system through the utilization of the Ranque effect

open access: yesАвіаційно-космічна техніка та технологія
One of the promising, yet relatively underexplored, approaches to turbine component cooling is the application of the Ranque vortex effect in turbine cooling systems, enabling temperature-based separation of the cooling flow.
Artem Karpenko
doaj   +1 more source

Coolant passage heat transfer with rotation [PDF]

open access: yes
In current and advanced gas turbine engines, increased speeds, pressures and temperatures are used to reduce specific fuel consumption and increase thrust/weight ratios.
Hajek, T. J., Johnson, B. V., Wagner, J.
core   +1 more source

Numerical Prediction of Deformation‐Induced Martensitic Transformation in Cold‐Sprayed Austenitic Stainless Steel

open access: yessteel research international, EarlyView.
Cold spray deposition of stainless steel (grade: SS304) is evaluated for marine applications, with emphasis on martensitic transformation during impact. Analytical modeling, simulations, and experiments reveal that helium‐assisted spraying of fine powders promotes cooling below the martensitic start temperature, enabling up to ≈40% austenite to ...
Cal Vin Wong   +4 more
wiley   +1 more source

Woven Eutectic Lamellar Structures Lead to Ultrahigh Strength and Energy Absorption Capacity in Additively Manufactured Lattice Structures

open access: yesSmall Structures, Volume 6, Issue 5, May 2025.
Herein, AlCoCrFeNi2.1 is selected to produce lattice structures by selective laser melting. The as‐printed lattice structures consist of numerous colonies of nanosized eutectic lamellar structures which are bent and interwind with each other to form a woven microstructure. The unique microstructure leads to unprecedented effective metal strength, yield
Zhiyong Ji   +6 more
wiley   +1 more source

Multidisciplinary Automation in Design of Turbine Vane Cooling Channels

open access: yesInternational Journal of Turbomachinery, Propulsion and Power
In the quest to enhance the efficiency of gas turbines, there is a growing demand for innovative solutions to optimize high-pressure turbine blade cooling.
Sanjay Nambiar   +4 more
doaj   +1 more source

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