Aeroenginesofthefuture(updatedV2 - THE AERONAUTICAL JOURNAL...

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1.0 INTRODUCTION One hundred and two years ago, after the Wright brothers had just attempted another unsuccessful flight, they predicted that it would be another 50 years before manned flight was achieved. Only two years later and 100 years ago this year, Orville Wright achieved the first powered flight at Kitty Hawk in North Carolina, illustrating just how difficult it is to predict the future and at the same time launching the pioneering age of aviation. Since this memorable day aviation has grown at a phenomenal rate and is now an essential part of our way of life, with society completely dependent on the ability to transport both people and goods safely, in comfort and in short travel times made possible by modern aircraft and their engines. Nations across the globe have also become highly dependant upon the aircraft as part of their national defence force. The two major aerospace sectors of civil and defence, from a common beginning, have taken quite different directions over time. Recently we have seen the military market develop from the cold war era into one of regional conflicts, where a wide range of complex scenarios present many new challenges for the aircraft and engine designer. Reduced defence budgets have also pushed afford- ability further up the agenda and these trends look set to continue. The civil sector, on the other hand, is driven by safety, cost of ownership, and passenger choice with environmental factors taking on ever increasing importance as we move towards an age of sustainable growth. Ultimately this direction will be determined by the approach that the industry’s governing bodies play in addressing Society’s concerns over the environmental impact of aviation. It is also possible that economic factors, such as the availability of kerosene will, in the longer term, influence the future direction of the industry. If the pressure for environmentally clean aircraft becomes domi- nant then we are likely to see accelerated technological development of novel aircraft and aero-engine concepts. Whichever direction the industry takes, both evolutionary and revolutionary underpinning technologies will be required, with innovative approaches in aero- engine design continuing to be a major contributor. This paper will examine both the civil and defence aerospace sectors and open up the debate by highlighting the key factors influ- encing the future direction in these markets. It will address the likely requirements for aircraft propulsion systems in the near, medium and longer-term, together with the underpinning technologies that are likely to prove essential in delivering the propulsion systems that the community and the customer demand. 2.0 CIVIL AEROSPACE
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This note was uploaded on 02/10/2011 for the course AERO 101 taught by Professor Sohe during the Spring '11 term at Punjab Engineering College.

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Aeroenginesofthefuture(updatedV2 - THE AERONAUTICAL JOURNAL...

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