Recent Trends in Fluid Mechanics (RTFM) Jan - April 2014
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STM JOURNALS
I take the privilege to present the print version for the Volume 1 Issue (1) of Recent Trends in Fluid Mechanics. The intension of RTFM is to create an atmosphere that stimulates creativeness, research and growth in the area of fluid mechanics and applications. The development and growth of the mankind is the consequence of brilliant Research done by eminent Scientists and Engineers in every field. RTFM provides an outlet for research findings and reviews in areas of fluid mechanics technology found to be relevant for national and international recent developments & research initiative. The aim and scope of the Journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high level learning, teaching and research in the domain of fluid mechanics research. Finally,I would like to thank Authors for their continued support and invaluable contributions and suggestions in the form of authoring. I express my sincere gratitude and thanks to our Editorial/ Reviewer board for write ups/ reviewing and providing constructive comments for the advancement of the journals. With regards to their due continuous support and co-operation, we have been able to publish quality Research/Reviews findings for our customers base. I hope you will enjoy reading this issue and we welcome your feedback on any aspect of the Journal.
Dr. Archana Mehrotra Director STM Journals
Recent Trends in Fluid Mechanics
Contents
1. Analysis of Flow through Main Engine Control Unit (MECU) of a New Aircraft Fuel Control System under Various Aircraft Acceleration Arun Kumar Sc 'E', Kamesh Goyal Sc 'G', Pradyumna Ghosh, Ankit Gopal Pandey
1
Recent Trends in Fluid Mechanics Volume 1, Issue 1 www.stmjournals.com
Analysis of Flow through Main Engine Control Unit (MECU) of a New Aircraft Fuel Control System under Various Aircraft Acceleration Arun Kumar Sc ‘E’1, Kamesh Goyal Sc ‘G’1, Pradyumna Ghosh2*, Ankit Gopal Pandey2 1
Regional Centre for Military Airworthiness, CEMILAC, HAL P. O. Lucknow, UP, India Department of Mechanical Engineering, Indian Institute of Technology (BHU), Varanasi, UP, India
2
Abstract A fuel control system is being designed and developed for a new aero engine of a fighter aircraft. But existing facility doesn’t support the full operational testing of the individual components of aircraft fuel control system under various aircraft acceleration conditions. In this paper theoretical analysis has been done to check the flow distribution of one of the basic systems, i.e., Main Engine Control Unit (MECU) under various aircraft accelerations. It has been observed that, in normal mode upon application of vertical orientated acceleration, for the flow rate of 1572 gph from the pump, a maximum variation of 0.17% in the combustion chamber flow rate has been observed. For this case a maximum variation of 3.3% in pressure (at Upstream MPV) was also observed. These variations are within permissible limit of variations that can be sustained by MECU circuit. In case of manual mode there is a large offset between experimental and simulation results (as large as 10 percent) but effect of possible ‘g’ effect is within 2 percent of the base results. Moreover, effect of sustained acceleration effect of ‘5 g’ for 5 min has also been analyzed and both the configuration and performance parameters are almost the same as the regular aircraft acceleration. It has also been analyzed that Emergency Spill Valve (ESV) and Pump Pressure Relief Valve (PPRV) which are spring loaded will not be falsely activated under operational ‘g’ effect.
Keywords: Aircraft acceleration, falsely activated, Main Engine control unit (MECU), Sustained acceleration
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