scholarly journals CFM56- 7B TAKE-OFF ENGINE PERFORMANCE WITH THRUST 26300 LB AND 24200 LB

Vortex ◽  
2021 ◽  
Vol 2 (1) ◽  
pp. 58
Author(s):  
Joseph Pradana Hutamadi
Keyword(s):  
Engine Performance ◽  
Performance Comparison ◽  
Test Cell ◽  
Market Demand ◽  
Know How ◽  
The Difference ◽  
Performance Calculation ◽  
A Performance

As an one of engine manufacturers, CFM produces CFM56-7B with some thrust rating versions to fulfill market demand. In this case, operator has some considerations in choosing engine which is appropriate with the demand. The engine performance is very important to be considered, especially the engine capabilities when it is being maximally operated in takeoff phase.This research discusses about the CFM56-7B engine takeoff performance comparison between 26300 lbs and 24200 lbs thrust rating configuration. By processing Test Cell Result data using formula in Engine Shop Manual - 003, author did a performance calculation to know how much the difference that happened to both of those thrust rating configuration.

Performance Evaluation of Survivability Approaches in Optical Networks

2011 ◽  
pp. 134-157
Author(s):  
Abdelhamid Eshoul ◽  
Hussein T. Mouftah
Keyword(s):  
Performance Evaluation ◽  
Optical Networks ◽  
Mesh Networks ◽  
Performance Comparison ◽  
Dynamic Traffic ◽  
Performance Analyses ◽  
The Difference ◽  
A Performance

The chapter outlines the different survivability approaches for mesh networks under static and dynamic traffic environments. It describes the different solution options and their implementations. Also included are detailed performance analyses and evaluations for the difference survivability approaches under both traffic environments. Finally, we present a performance comparison between the different survivability approaches and end the chapter with some concluding remarks.

DISTINGUISHING THE INDISTINGUISHABLE OF THE WORDS INJURED, WOUNDED, AND HURT: A CORPUS INVESTIGATION

2017 ◽  
Vol 24 (1) ◽  
pp. 19
Author(s):  
Kusumawardani Dewa Ayu Novi
Keyword(s):  
English Word ◽  
Know How ◽  
Efl Students ◽  
The Difference

Most people, especially EFL students, claimed that English has rich vocabularies. Each vocabulary has many synonyms that could be found in thesaurus. But the problem is, those synonymous words can hardly be differentiated when applied in daily communication. It is because each of the English word has its own context and rule when it is used in a sentence or an utterance. However, in reality, this rule is often ignored by people. It is because they rely more on their intuition. Yet, it needs more than intuition to know the difference and how to use the words properly. The words ‘injured’, ‘wounded’, and ‘hurt’ were chosen as the object of this study, since those words are synonymous and distinguishable. A quick survey had been done by the researcher to know how EFL students and people in general used these three words. It turned out that they used those three words by ignoring the rule and depending on their intuition instead. The aim of this research is to help people to know the difference among those three words. By retrieving data from COCA and finding the collocation of those words, it is hoped that the reader will realize that these synonymous words are not as synonymous as they thought.

A Performance Comparison of Three Topologies of Circular Loop Antennas Transmitting Systems

2021 ◽  
Author(s):  
Ferdaous Abderrazak ◽  
Eva Antonino-Daviu ◽  
Larbi Talbi ◽  
Miguel Ferrando-Bataller
Keyword(s):  
Performance Comparison ◽  
Circular Loop ◽  
Loop Antennas ◽  
A Performance

scholarly journals Axial Compressor Mean-Line Analysis: Choking Modelling and Fully-Coupled Integration in Engine Performance Simulations

2021 ◽  
Vol 6 (1) ◽  
pp. 4
Author(s):  
Ioannis Kolias ◽  
Alexios Alexiou ◽  
Nikolaos Aretakis ◽  
Konstantinos Mathioudakis
Keyword(s):  
Axial Compressor ◽  
Engine Performance ◽  
Engine Model ◽  
Multi Stage ◽  
Transient Simulations ◽  
Full Knowledge ◽  
Compressor Performance ◽  
First Time ◽  
Performance Calculation ◽  
Fully Coupled

A mean-line compressor performance calculation method is presented that covers the entire operating range, including the choked region of the map. It can be directly integrated into overall engine performance models, as it is developed in the same simulation environment. The code materializing the model can inherit the same interfaces, fluid models, and solvers, as the engine cycle model, allowing consistent, transparent, and robust simulations. In order to deal with convergence problems when the compressor operates close to or within the choked operation region, an approach to model choking conditions at blade row and overall compressor level is proposed. The choked portion of the compressor characteristics map is thus numerically established, allowing full knowledge and handling of inter-stage flow conditions. Such choking modelling capabilities are illustrated, for the first time in the open literature, for the case of multi-stage compressors. Integration capabilities of the 1D code within an overall engine model are demonstrated through steady state and transient simulations of a contemporary turbofan layout. Advantages offered by this approach are discussed, while comparison of using alternative approaches for representing compressor performance in overall engine models is discussed.

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