Results 71 to 80 of about 99,399 (310)

Numerical Study of Purge and Secondary Flows in a Low-Pressure Turbine [PDF]

open access: yesJournal of Turbomachinery, 2016
The secondary flow increases the loss and changes the flow incidence in the downstream blade row. To prevent hot gases from entering disk cavities, purge flows are injected into the mainstream in a real aero-engine. The interaction between purge flows and the mainstream usually induces aerodynamic losses.
Cui, J, Tucker, PG
openaire   +2 more sources

Development of Sustainable MgO–C Refractories Using MgO–C Recyclates and a Novel Eco‐Friendly Fructose–Tannin Binder Crosslinked With Citric Acid

open access: yesAdvanced Engineering Materials, EarlyView.
This study develops sustainable MgO–C refractories using recycled materials and eco‐friendly fructose–tannin binders. The enhanced performance of citric acid as a cross‐linker and functional additives on mechanical and thermomechanical properties was examined. Characterization included strength tests, immersion trials, and microstructural and inclusion
Dinesh K. Gunasekar   +7 more
wiley   +1 more source

Studies on the Reduction of Radon Plate-Out

open access: yes, 2015
The decay of common radioactive gases, such as radon, produces stable isotopes by a sequence of daughter particles with varied half-lives. These daughter particles are a significant source of gamma, neutron, and alpha particle backgrounds that can mimic ...
Bruemmer, M.   +4 more
core   +1 more source

Unraveling the Effect of Tramp Elements on Phase Transformations in Steels by Combining CALPHAD Modeling and Experiments

open access: yesAdvanced Engineering Materials, EarlyView.
This study investigates how tramp elements from increased scrap usage influence phase transformations in low‐alloyed steel. Combining dilatometry and microscopy reveal that tramp elements delay transformations, reduce critical cooling rates and increase hardenability.
Lukas Hatzenbichler   +5 more
wiley   +1 more source

In-line Analysis of Entrainment through Image based Probe Measurement Technology

open access: yesChemical Engineering Transactions, 2018
A new optical approach for entrainment detection is presented using a measurement probe, which is applicable at different axial and radial positions within the column in an industrial environment.
Jonas Schulz, Hans-Jorg Bart
doaj   +1 more source

Experimental investigation of contamination prevention techniques to cryogenic surfaces on board orbiting spacecraft [PDF]

open access: yes
Within the simulation limitations of on-orbit conditions, it was demonstrated that a helium purge system could be an effective method for reducing the incoming flux of contaminant species.
Froechtenigt, J. F.   +3 more
core   +1 more source

Techniques for insulating cryogenic fuel containers Patent [PDF]

open access: yes, 1967
Carbon dioxide purge systems to prevent condensation in spaces between cryogenic fuel tanks and hypersonic vehicle ...
Jackson, L. R.
core   +1 more source

Potential and analysis of an osmotic power plant in the Magdalena River using experimental field-data [PDF]

open access: yes, 2019
Producción CientíficaThe Magdalena River mouth in Colombia is studied as a candidate site for a renewable power plant via osmotic energy technology, using pressure retarded osmosis.
Salamanca Parra, Jacobo Manuel   +2 more
core   +1 more source

Multifunctional Crushing and Piezoresistive Self‐Sensing in Conductive Epoxy/CNT‐Coated Polyetherimide TPMS Lattices

open access: yesAdvanced Engineering Materials, EarlyView.
This study reports lightweight polyetherimide triply periodic minimal surfaces lattices coated with carbon nanotube‐reinforced epoxy that combine mechanical robustness with self‐sensing. The conformal coating enhances stiffness, strength and energy absorption while enabling reliable strain monitoring.
A. Triay   +3 more
wiley   +1 more source

Hazardous Gas Leak Analysis in the Space Shuttle [PDF]

open access: yes, 1991
Helium tests of the main propulsion system in the Space Shuttle and on hydrogen leaks are examined. The hazardous gas detection system (HGDS) in the mobile launch pad uses mass spectrometers (MS) to monitor the shuttle environment for leaks.
Barile, Ronald G.
core   +1 more source

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