The Future of Military Engines

The Future of Military Engines PDF

Author: Andrew P. Hunter

Publisher: Rowman & Littlefield

Published: 2021-10-08

Total Pages: 83

ISBN-13: 1538140349

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CSIS's The Future of Military Engines looks at the state of the U.S. military engine industrial base and the choices confronting policymakers at the Department of Defense (DoD). The military engine industrial base is closely tied to the industrial base for commercial engines. U.S. engine providers use many of the same facilities and largely the same supply chain for military and commercial engines. The ability to leverage commercial supply chains is critical because supply chain quality underlies the performance advantage of U.S. military engines, both for individual aircraft and military aircraft fleets. International competitors such as Russia and China are seeking to overtake the U.S. in engines. However, the current U.S. advantage is sustainable if it is treated as a national priority. Many military aircraft, especially fighters, require engines with important differences from commercial aircraft. They fly different flight profiles and perform different jobs. These differences mean that while DoD can leverage the commercial engine industrial base, it must also make investments to sustain the industrial base’s unique military components. In the next few years, DoD investment in military engines is projected to decrease significantly, particularly for R&D. This presents a challenge as military-unique engineering skills are highly perishable. Four major policy choices confront DoD as it formulates its investment approach to military engines going forward: 1) Priority, 2) Resources, 3) Business Model, and 4) Competition. The DoD is at an inflection point for engine investment, and the time for choosing on these four key policy questions will come in the next few years.

Materials Needs and R&D Strategy for Future Military Aerospace Propulsion Systems

Materials Needs and R&D Strategy for Future Military Aerospace Propulsion Systems PDF

Author: National Research Council

Publisher: National Academies Press

Published: 2011-06-20

Total Pages: 214

ISBN-13: 0309212146

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The ongoing development of military aerospace platforms requires continuous technology advances in order to provide the nation's war fighters with the desired advantage. Significant advances in the performance and efficiency of jet and rocket propulsion systems are strongly dependent on the development of lighter more durable high-temperature materials. Materials development has been significantly reduced in the United States since the early 1990s, when the Department of Defense (DOD), the military services, and industry had very active materials development activities to underpin the development of new propulsion systems. This resulted in significant improvements in all engine characteristics and established the United States in global propulsion technology. Many of the significant advances in aircraft and rocket propulsion have been enabled by improved materials and, materials manufacturing processes. To improve efficiency further, engine weight must be reduced while preserving thrust. Materials Needs and Research and Development Strategy for Future Military Aerospace Propulsion Systems examines whether current and planned U.S. efforts are sufficient to meet U.S. military needs while keeping the U.S. on the leading edge of propulsion technology. This report considers mechanisms for the timely insertion of materials in propulsion systems and how these mechanisms might be improved, and describes the general elements of research and development strategies to develop materials for future military aerospace propulsion systems. The conclusions and recommendations asserted in this report will enhance the efficiency, level of effort, and impact of DOD materials development activities.

The Air Force and the Great Engine War

The Air Force and the Great Engine War PDF

Author: Robert W. Drewes

Publisher: DIANE Publishing

Published: 1995-09

Total Pages: 193

ISBN-13: 0788121510

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Examines the 1984 "war" that pitted Pratt and Whitney against GE in head-to-head competition for multi billion dollar defense contracts to provide high performance engines for front line fighter aircraft. The circumstances surrounding the lengthy battle led to the Air Force decision to split future engine sales between the two. Attempts to cut through emotional opinions of the "combatants," to report reality, and to identify lessons learned. Helps the reader to understand the government-to-contractor personality issues; to understand management styles, business expectations and communication skills of key participants.

Improving the Efficiency of Engines for Large Nonfighter Aircraft

Improving the Efficiency of Engines for Large Nonfighter Aircraft PDF

Author: National Research Council

Publisher: National Academies Press

Published: 2007-07-30

Total Pages: 192

ISBN-13: 0309179130

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Because of the important national defense contribution of large, non-fighter aircraft, rapidly increasing fuel costs and increasing dependence on imported oil have triggered significant interest in increased aircraft engine efficiency by the U.S. Air Force. To help address this need, the Air Force asked the National Research Council (NRC) to examine and assess technical options for improving engine efficiency of all large non-fighter aircraft under Air Force command. This report presents a review of current Air Force fuel consumption patterns; an analysis of previous programs designed to replace aircraft engines; an examination of proposed engine modifications; an assessment of the potential impact of alternative fuels and engine science and technology programs, and an analysis of costs and funding requirements.

A Review of United States Air Force and Department of Defense Aerospace Propulsion Needs

A Review of United States Air Force and Department of Defense Aerospace Propulsion Needs PDF

Author: National Research Council

Publisher: National Academies Press

Published: 2007-01-14

Total Pages: 288

ISBN-13: 0309102472

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Rocket and air-breathing propulsion systems are the foundation on which planning for future aerospace systems rests. A Review of United States Air Force and Department of Defense Aerospace Propulsion Needs assesses the existing technical base in these areas and examines the future Air Force capabilities the base will be expected to support. This report also defines gaps and recommends where future warfighter capabilities not yet fully defined could be met by current science and technology development plans.

Future Combat Environments

Future Combat Environments PDF

Author: J. L. Birkler

Publisher:

Published: 1984

Total Pages: 20

ISBN-13:

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To operate in the more stringent combat environments of the future, future propulsion systems will have to be more reliable, durable and maintainable. The development community has already responded with many initiatives to address the reliability and durability problems that became apparent during the 1970s. Consequently, the first half of this paper will discuss instead design features that may enhance maintainability and assess the extent to which they have been incorporated in existing engines. The second half of the paper assesses how demands for more supportable engines are influencing the amount of testing and the calendar time required to develop new engines for use in fighter and attack aircraft.

Military Jet Engine Acquisition

Military Jet Engine Acquisition PDF

Author: Obaid Younossi

Publisher: Rand Corporation

Published: 2002

Total Pages: 153

ISBN-13: 9780833032829

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As manufacturing processes and materials used in aircraft engine production change and new information on aircraft engine technology becomes available, cost-estimation techniques must be updated. The authors present a new methodology for estimating military jet engine costs, reviewing the technical parameters that drive the engine development schedule, development costs, and production costs.

Opposed Piston Engines

Opposed Piston Engines PDF

Author: Jean-Pierre Pirault

Publisher: SAE International

Published: 2009-10-08

Total Pages: 578

ISBN-13: 0768021758

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This book explores the opposed piston (OP) engine, a model of power and simplicity, and provides the first comprehensive description of most opposed piston (OP) engines from 1887 to 2006. Design and performance details of the major types of OP engines in stationary, ground, marine, and aviation applications are explored and their evolution traced. The OP engine has set enviable and leading-edge standards for power/weight refinement, fuel tolerance, fuel efficiency, package space, and manufacturing simplicity. For these reasons, the OP concept still remains of interest for outstanding power and package density, simplicity, and reliability; e.g., aviation and certain military transport requirements. Using material from historic and unpublished internal research reports, the authors present the rationale for OP engines, their diverse architecture, detailed design aspects, performance data, manufacturing details, and leading engineers and applications. Comparisons to four-stroke and competitor engines are made, supporting the case for reconsidering OP engines for certain applications. Topics include: The history of OP engines Aeronautical Automotive Military Marine Unusual OP engines Comparison between 2 and 4 stroke engines The future of OP engines and more