Performance evaluation of aero-engine based on information entropy and symbolization

2012 ◽  
Author(s):  
Ying Jiang ◽  
Yongsheng Shi ◽  
Yunxue Song
Keyword(s):  
Performance Evaluation ◽  
Information Entropy ◽  
Aero Engine

Aero Engine Performance Evaluation During Missile Firing Test

2017 ◽  
Author(s):  
Sajath Kumar Manoharan ◽  
Kasram Santhosh ◽  
Mahesh P. Padwale ◽  
G. P. Ravishankar
Keyword(s):  
Performance Evaluation ◽  
Engine Performance ◽  
Flight Testing ◽  
Flow Disturbance ◽  
Fighter Aircraft ◽  
Firing Test ◽  
Aero Engine ◽  
Temperature Ramps ◽  
Air Intake ◽  
Model Engine

Evaluation of engine performance during armament firing in fighter aircraft is a vital qualification aspect for airframe engine integration. Ingestion of missile’s efflux into air intake results in rapid increase of engine inlet temperatures (temperature ramps) which cause flow disturbance to the compressor. Temperature distortion caused due to armament firing and its effect on compressor stability during flight testing is evaluated. Accordingly mitigation actions are recommended for stall/surge free operations. Distortion descriptors are assessed using simulation model (engine performance program) and results compared with engine distortion limits.

scholarly journals Design and Testing of a Sensing System for Aero-Engine Smart Bearings

Proceedings ◽  
2019 ◽  
Vol 2 (13) ◽  
pp. 1005 ◽  
Author(s):  
Imran Bashir ◽  
Bahareh Zaghari ◽  
Terry J. Harvey ◽  
Alex S. Weddell ◽  
Neil M. White ◽  
...  
Keyword(s):  
Performance Evaluation ◽  
Test Procedure ◽  
Low Power Consumption ◽  
Wireless Data ◽  
Sensor Performance ◽  
Sensing System ◽  
Aero Engine ◽  
Self Powered ◽  
Design And Testing

Smart bearings incorporating self-powered sensors and wireless data communications with intelligence in monitoring bearing conditions can help to detect early faults in aero-engine bearings. This paper presents the challenges in design and development of a sensing system with compact and low-power consumption sensors and the procedures for sensor performance evaluation under the requirements of aerospace standard. Industrial standard DO160 testing is necessary for preliminary testing of the smart sensing system prior to being installed in aero-engine, thus a laboratory test procedure has been developed for sensor performance evaluation for the smart aero-engine bearings in this project. As a case study, this paper presents the details and results of the accelerometer evaluation following the requirements in DO160.

Multi-Parameter Methods of Comprehensive Performance Evaluation for Aero-Engine

2012 ◽  
Vol 466-467 ◽  
pp. 995-999 ◽  
Author(s):  
Yi Hao ◽  
Li Wang ◽  
Xuan Jiang
Keyword(s):  
Performance Evaluation ◽  
Evaluation Method ◽  
Rough Set Theory ◽  
Principal Component ◽  
Parameter Evaluation ◽  
Comprehensive Performance ◽  
Aero Engine ◽  
Depth Study ◽  
Practical Performance ◽  
Airline Company

Comprehensive performance evaluation for aero-engine is essential in the stage of operational management in an airline company. Based on the features of aero-engine, this paper focuses on the implement of fuzzy comentropy method which is combined of fuzzy mathematics and rough set theory in the practical performance evaluation of aero-engine. By comparative analysis with principal component analysis, this paper reaches the conclusion that the fuzzy comentropy method has more advantages of computer programming, being free of expertise, preventing information loss. However, the accuracy of multi-parameter evaluation method depends upon the information content provided by the initial data; therefore, the pre-processing of data in decision-making and method itself are still worth in-depth study and improvement.

Design and Performance Evaluation of an Aero Engine Booster Pump

2015 ◽  
Author(s):  
Ashfaq C. Mohammed ◽  
Shivakumar Ulaganathan ◽  
Lingamoorthy Kannan ◽  
Anbuchezhian Singaravelu ◽  
Girish K. Degaonkar
Keyword(s):  
Performance Evaluation ◽  
Centrifugal Pump ◽  
Flow Analysis ◽  
Simulation Method ◽  
Operating Conditions ◽  
Engine Fuel ◽  
Fuel System ◽  
Pump Impeller ◽  
Aero Engine ◽  
And Performance

The primary function of an aero engine fuel system is to supply metered fuel to the combustion chamber at all operating conditions based on the flow demand set by the engine controller. Centrifugal pump is one of the components in fuel system that feeds fuel to the HP pump. Impeller design is a critical one which dictates the overall performance of centrifugal pump. This paper discusses about design and performance evaluation of impeller with twisted blade configuration. Impeller design is performed based on Euler’s one dimensional theory. Steady state performance of the impeller at design and off-design operating conditions is analyzed by using commercial CFD code ANSYS-CFX with a standard SST turbulence model. The governing mathematical model for flow analysis is a three dimensional incompressible Reynolds Averaged Navier-Stokes (RANS) equation. Cavitation phenomenon is simulated in the CFD multiphase analysis to assess the pump impeller performance under cavitation at different NPSH values. Rayleigh-Plesset cavitation model is used along with RANS equation to perform cavitation analysis. From this study, the simulation method and technique adapted is appropriate for predicting the performance of impeller of centrifugal pump with or without cavitation. Performance of the impeller reduces drastically as there is decrease in NPSH. The prediction of critical NPSH is vital for safer operation of the pump, specifically at high altitude the pump inlet pressure falls which may result in cavitation during operation.

Fine Particle Mass Monitoring with Low-Cost Sensors: Corrections and Long-Term Performance Evaluation

2019 ◽  
Author(s):  
Carl Malings ◽  
Rebecca Tanzer ◽  
Aliaksei Hauryliuk ◽  
Provat K. Saha ◽  
Allen L. Robinson ◽  
...  
Keyword(s):  
Performance Evaluation ◽  
Fine Particle ◽  
Low Cost ◽  
Particle Mass ◽  
Long Term Performance ◽  
Term Performance
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