Results 51 to 60 of about 12,877 (244)
Quiet Clean Short-haul Experimental Engine (QCSEE) main reduction gears detailed design report [PDF]
Lightweight turbine engines with geared slower speed fans are considered. The design of two similar but different gear ratio, minimum weight, epicyclic star configuration main reduction gears for the under the wing (UTW) and over the wing (OTW) engines ...
Defeo, A., Kulina, M.
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Asia-Pacific Journal of Chemical Engineering, EarlyView.ABSTRACT Greenhouse gas (GHG) emissions have emerged as one of the most critical drivers of climate change; this is primarily due to high concentrations and long atmospheric life of carbon dioxide (CO2). For a significant amount of time, various biological processes such as microalgal cultivation, cyanobacterial systems, photosynthetic microorganisms ...
Sadhana Semwal, Harish Chandra Joshi
wiley +1 more source
An analytical method to predict efficiency of aircraft gearboxes [PDF]
A spur gear efficiency prediction method previously developed by the authors was extended to include power loss of planetary gearsets. A friction coefficient model was developed for MIL-L-7808 oil based on disc machine data. This combined with the recent
Anderson, N. E. +2 more
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Asia-Pacific Journal of Chemical Engineering, EarlyView.ABSTRACT Wellbore instability driven by the volumetric expansion of reactive shale formations remains a primary operational challenge in modern drilling engineering, causing severe mechanical failures and substantial economic deficits. The objective of this study is to formulate and evaluate a novel dual‐action chemical additive capable of ...
Ghaleb Oriquat +8 more
wiley +1 more source
Evaluation of a series hybrid thrust bearing at DN values to three million. 2: Fabrication and testing [PDF]
Results of tests made to determine the experimental performance of a series hybrid bearing are reported. The bearing consists of a 150 mm ball bearing and a centrifugally actuated, conical, fluid film bearing fitting an envelope with an outer radius of ...
Eusepi, M., Winn, L. W.
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The phase shift of an ultrasonic pulse at an oil layer and determination of film thickness [PDF]
, 2005 An ultrasonic pulse incident on a lubricating oil film in a machine element will be partially reflected and partially transmitted. The proportion of the wave amplitude reflected, termed the reflection coefficient, depends on the film thickness and the ...
Astridge D. G. +4 more
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Business Strategy and the Environment, EarlyView.ABSTRACT This study employs hierarchical regression modelling on a survey of 550 firms from Nigeria and Ghana to examine the impact of sustainability auditing on corporate governance, environmental performance, and financial outcomes of high‐impact industries.
Mandella Osei‐Assibey Bonsu +3 more
wiley +1 more source
An overview of advancements in helicopter transmission design [PDF]
, 1983 Development of a high temperature operating helicopter gearbox is ...
Mancini, J. H.
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Influence of lubricant type on churning power loss of worm gear [PDF]
This paper presents the results of experimental tests of the churning power loss of a single-stage worm gear. The churning power loss is a load-independent loss that occurs when the gear churns through the lubricant.
Devendra J. Marsonia +4 more
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Analysis of the efficiency of wind turbine gearboxes using the temperature variable [PDF]
, 2019 The aim of this paper is to evaluate how lubricant selection affects gearbox efficiency and overall energy production by analysing real data from wind farms, monitored and controlled by a Supervisory Control and Data Acquisition (SCADA system).
Galego, P. +3 more
core +1 more source