Download or read book Wave Rotor Demonstrator Engine Assessment written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-17 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of the program was to determine a wave rotor demonstrator engine concept using the Allison 250 series engine. The results of the NASA LERC wave rotor effort were used as a basis for the wave rotor design. A wave rotor topped gas turbine engine was identified which incorporates five basic requirements of a successful demonstrator engine. Predicted performance maps of the wave rotor cycle were used along with maps of existing gas turbine hardware in a design point study. The effects of wave rotor topping on the engine cycle and the subsequent need to rematch compressor and turbine sections in the topped engine were addressed. Comparison of performance of the resulting engine is made on the basis of wave rotor topped engine versus an appropriate baseline engine using common shaft compressor hardware. The topped engine design clearly demonstrates an impressive improvement in shaft horsepower (+11.4%) and SFC (-22%). Off design part power engine performance for the wave rotor topped engine was similarly improved including that at engine idle conditions. Operation of the engine at off design was closely examined with wave rotor operation at less than design burner outlet temperatures and rotor speeds. Challenges identified in the development of a demonstrator engine are discussed. A preliminary design was made of the demonstrator engine including wave rotor to engine transition ducts. Program cost and schedule for a wave rotor demonstrator engine fabrication and test program were developed. Snyder, Philip H. Glenn Research Center...
Download or read book Wave Rotor Enhanced Gas Turbine Engine Demonstrator written by and published by . This book was released on 1999 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: The U.S. Army Research Laboratory, NASA Glenn Research Center, and Rolls-Royce Allison are working collaboratively to demonstrate the benefits and viability of a wave-rotor-topped gas turbine engine. The self-cooled wave rotor is predicted to increase the engine overall pressure ratio and peak temperature by 300% and 25 to 30%, respectively, providing substantial improvements in engine efficiency and specific power. Such performance improvements would significantly reduce engine emissions and the fuel logistics trails of armed forces. Progress towards a planned demonstration of a wave-rotor-topped Rolls-Royce Allison model 250 engine has included completion of the preliminary design and layout of the engine, the aerodynamic design of the wave rotor component and prediction of its aerodynamic performance characteristics in on- and off-design operation and during transients, and the aerodynamic design of transition ducts between the wave rotor and the high pressure turbine. The topping cycle increases the burner entry temperature and poses a design challenge to be met in the development of the demonstrator engine.
Download or read book Performance Prediction and Preliminary Design of Wave Rotors Enhancing Gas Turbine Cycles written by Pezhman Akbari and published by . This book was released on 2004 with total page 522 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Wave Engine Topping Cycle Assessment written by and published by . This book was released on 1996 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book ASME Technical Papers written by and published by . This book was released on 2000 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Research Technology 1997 written by and published by DIANE Publishing. This book was released on 1998 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Preliminary Assessment of Combustion Modes for Internal Combustion Wave Rotors written by M. Razi Nalim and published by . This book was released on 1995 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book 2007 2008 Assessment of the Army Research Laboratory written by National Research Council and published by National Academies Press. This book was released on 2009-12-03 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume is the latest in a series of biennial assessments of the scientific and technical quality of the Army Research Laboratory (ARL). The current report summarizes findings for the 2007-2008 period, during which 95 volunteer experts in fields of science and engineering participated in the following activities: visiting ARL annually, receiving formal presentations of technical work, examining facilities, engaging in technical discussions with ARL staff, and reviewing ARL technical materials. The overall quality of ARL's technical staff and their work continues to be impressive, as well as the relevance of their work to Army needs. ARL continues to exhibit a clear, passionate concern for the end user of its technology-the soldier in the field. While two directorates have large program-support missions, there is considerable customer-support work across the directorates, which universally demonstrate mindfulness of the importance of transitioning technology to support immediate and near-term Army needs. ARL staff also continue to expand their involvement with the wider scientific and engineering community. This involvement includes monitoring relevant developments elsewhere, engaging in significant collaborative work (including the Collaborative Technology Alliances), and sharing work through peer reviews. In general, ARL is working very well within an appropriate research and development niche and has been demonstrating significant accomplishments.
Download or read book 39th AIAA ASME SAE ASEE Joint Propulsion Conference Exhibit July 20 23 2003 Huntsville Alabama 03 4400 03 4449 written by and published by . This book was released on 2003 with total page 526 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Paper written by and published by . This book was released on 2000 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book 38th AIAA ASME SAE ASEE Joint Propulsion Conference Exhibit 02 3900 02 3949 written by and published by . This book was released on 2002 with total page 496 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dynamic Simulation of a Wave Rotor Topped Turboshaft Engine written by R. B. Greendyke and published by . This book was released on 1997 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of the ASME Process Industries Division Presented at the ASME Mechanical Engineering Congress and Exposition written by and published by . This book was released on 2004 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on with total page 1050 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Probabilistic Approach to Aeropropulsion System Assessment written by and published by . This book was released on 2000 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Numerical Study of Stratified Charge Combustion in Wave Rotors written by M. Razi Nalim and published by . This book was released on 1997 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:
