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ISBN 13 :
Total Pages : 28 pages
Book Rating : 4.:/5 (317 download)
Download or read book Simplified Design Point Performance Model of a Dry Turbofan Engine Cycle written by and published by . This book was released on 1981 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Frederick J. Lallman
Publisher :
ISBN 13 :
Total Pages : 18 pages
Book Rating : 4.:/5 (11 download)
Download or read book Simplified Off-design Performance Model of a Dry Turbofan Engine Cycle written by Frederick J. Lallman and published by . This book was released on 1981 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 36 pages
Book Rating : 4.:/5 (317 download)
Download or read book Simplified Off-design Performance Model of a Day Turbofan Engine Cycle written by and published by . This book was released on 1981 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Michael R. Vanco
Publisher :
ISBN 13 :
Total Pages : 44 pages
Book Rating : 4.:/5 (31 download)
Download or read book Computer Program for Design-point Performance of Turbojet and Turbofan Engine Cycles written by Michael R. Vanco and published by . This book was released on 1967 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 704 pages
Book Rating : 4.:/5 (31 download)
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Vincent A. Padovano
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (137 download)
Download or read book Characteristics of a Regenerative Cycle Turbofan Aircraft Engine written by Vincent A. Padovano and published by . This book was released on 1963 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Intermarriage of the turbofan engine concept with a regenerative thermodynamic cycle is suggested as a means of improving the thrust specific fuel consumption. The primary objective of this study is to determine generalized performance characteristics of the regenerative cycle turbofan engine by (a) the derivation of the applicable thermodynamic cycle analysis, and (b) the generation of parametric design point performance. Secondary objectives include the optimization of cycle relationships to maximize performance and the quantitative evaluation of the regenerative turbofan from an aircraft mission standpoint. A thermodynamic cycle analysis has been derived for a front-fan, non-mixed exhaust turbofan engine which allows the determination of general engine performance as a function of component performance, flight conditions, and cycle design variables with and without primary stream regeneration. Parametric design point calculations have yielded both the performance characteristics of the simple and regenerative cycle turbofan engines and the comparison between them. The use of regeneration is found to offer significant improvement in turbofan TSFC at the expense of engine weight and size. Analytical means are provided for direct evaluation of the optimum cycle temperature which yields minimum TSFC. Substantial improvement in the range of a subsonic transport aircraft can be realized even up to the point where the regenerative turbofan weighs twice as much as its simple cycle counterpart. Primary stream regeneration can allow a given level of specific fuel consumption improvement to be obtained subsonically at bypass ratios lower than those that would be required by a simple cycle turbofan. Low bypass ratio would be desirable for high subsonic and supersonic operation. Hence, it is concluded that a more flexible performance improvement of the present simple cycle turbofan could well lie in a combination of increased bypass ratio and the selective use of primary stream regeneration.
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ISBN 13 :
Total Pages : 244 pages
Book Rating : 4.:/5 (317 download)
Download or read book Scientific and Technical Information Output of the Langley Research Center for Calender Year 1981 written by and published by . This book was released on 1982 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : National Aeronautics and Space Administration (NASA)
Publisher : Createspace Independent Publishing Platform
ISBN 13 : 9781720659570
Total Pages : 80 pages
Book Rating : 4.6/5 (595 download)
Download or read book Performance (Off-Design) Cycle Analysis for a Turbofan Engine with Interstage Turbine Burner written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-03 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report presents the performance of a steady-state, dual-spool, separate-exhaust turbofan engine, with an interstage turbine burner (ITB) serving as a secondary combustor. The ITB, which is located in the transition duct between the high- and the low-pressure turbines, is a relatively new concept for increasing specific thrust and lowering pollutant emissions in modern jet-engine propulsion. A detailed off-design performance analysis of ITB engines is written in Microsoft(Registered Trademark) Excel (Redmond, Washington) macrocode with Visual Basic Application to calculate engine performances over the entire operating envelope. Several design-point engine cases are pre-selected using a parametric cycle-analysis code developed previously in Microsoft(Registered Trademark) Excel, for off-design analysis. The off-design code calculates engine performances (i.e. thrust and thrust-specific-fuel-consumption) at various flight conditions and throttle settings.Liew, K. H. and Urip, E. and Yang, S. L. and Mattingly, J. D. and Marek, C. J.Glenn Research CenterDESIGN ANALYSIS; TURBOFAN ENGINES; STEADY STATE; SPOOLS; BURNERS; DUCTED FLOW; RELIABILITY ANALYSIS; FUEL CONSUMPTION; LOW PRESSURE; PROPULSION
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ISBN 13 :
Total Pages : 448 pages
Book Rating : 4.:/5 (319 download)
Download or read book NASA SP. written by and published by . This book was released on 1984 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 610 pages
Book Rating : 4.:/5 (31 download)
Download or read book IEEE Proceedings of the Southeastcon written by and published by . This book was released on 1982 with total page 610 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 1020 pages
Book Rating : 4.F/5 ( download)
Download or read book Aeronautical Engineering written by and published by . This book was released on 1992 with total page 1020 pages. Available in PDF, EPUB and Kindle. Book excerpt: A selection of annotated references to unclassified reports and journal articles that were introduced into the NASA scientific and technical information system and announced in Scientific and technical aerospace reports (STAR) and International aerospace abstracts (IAA)
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ISBN 13 :
Total Pages : 94 pages
Book Rating : 4.:/5 (317 download)
Download or read book ENGINEL: A Single Rotor Turbojet Engine Cycle Match Performance Program written by and published by . This book was released on 1977 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 92 pages
Book Rating : 4.:/5 (317 download)
Download or read book Computer Program for the Design and Off-design Performance of Turbojet and Turbofan Engine Cycles written by and published by . This book was released on 1978 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 38 pages
Book Rating : 4.:/5 (227 download)
Download or read book SIMULATION OF TURBOFAN ENGINE. PART 1. DESCRIPTION OF METHOD AND BALANCING TECHNIQUE. written by and published by . This book was released on 1967 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: The report describes a digital computer program titled SMOTE (simulation of Turbofan Engine). SMOTE is a computer program for balancing-cycle turbofan engines capable of running both design and off-design points. Component performance maps are reduced to Block Data (tabular form) to provide a base for calculating component performance. The design point is run first and map correction factors are calculated to scale the components to the desired performance. These correction factors are then applied to the component performance maps at off-design points. Initially, when the program is running at an off-design point, the cycle is not balanced, and errors (for example, work required by the compressor minus work supplied by the turbine) are generated. Small changes in engine independent variables (for example, compressor speed) then produce small changes in the errors, and these differential changes are loaded into a matrix. The matrix is then solved for the set of independent variables which results in zero errors, thus balancing the cycle. Actually, this process may be repeated several times before it reaches a balanced point because there is a non linear relationship between the independent variables and the errors. Sample results are included in the report.
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ISBN 13 :
Total Pages : 64 pages
Book Rating : 4.:/5 (317 download)
Download or read book Preliminary Study of Optimum Ductburning Turbofan Engine Cycle Design Parameters for Supersonic Cruising written by and published by . This book was released on 1978 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : National Aeronautics and Space Administration (NASA)
Publisher : Createspace Independent Publishing Platform
ISBN 13 : 9781720660309
Total Pages : 32 pages
Book Rating : 4.6/5 (63 download)
Download or read book Performance Cycle Analysis of a Two-Spool, Separate-Exhaust Turbofan with Interstage Turbine Burner written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-04 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper presents the performance cycle analysis of a dual-spool, separate-exhaust turbofan engine, with an Interstage Turbine Burner serving as a secondary combustor. The ITB, which is located at the transition duct between the high- and the low-pressure turbines, is a relatively new concept for increasing specific thrust and lowering pollutant emissions in modern jet engine propulsion. A detailed performance analysis of this engine has been conducted for steady-state engine performance prediction. A code is written and is capable of predicting engine performances (i.e., thrust and thrust specific fuel consumption) at varying flight conditions and throttle settings. Two design-point engines were studied to reveal trends in performance at both full and partial throttle operations. A mission analysis is also presented to assure the advantage of saving fuel by adding ITB.Liew, K. H. and Urip, E. and Yang, S. L. and Mattingly, J. D. and Marek, C. J.Glenn Research CenterTURBOFANS; TURBINES; SPOOLS; TURBINE ENGINES; THRUST; DUCTED FLOW; EXHAUST EMISSION; JET PROPULSION; PERFORMANCE PREDICTION; RELIABILITY ANALYSIS
Author : Joachim Kurzke
Publisher : Springer
ISBN 13 : 3319759795
Total Pages : 766 pages
Book Rating : 4.3/5 (197 download)
Download or read book Propulsion and Power written by Joachim Kurzke and published by Springer. This book was released on 2018-05-28 with total page 766 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book is written for engineers and students who wish to address the preliminary design of gas turbine engines, as well as the associated performance calculations, in a practical manner. A basic knowledge of thermodynamics and turbomachinery is a prerequisite for understanding the concepts and ideas described. The book is also intended for teachers as a source of information for lecture materials and exercises for their students. It is extensively illustrated with examples and data from real engine cycles, all of which can be reproduced with GasTurb (TM). It discusses the practical application of thermodynamic, aerodynamic and mechanical principles. The authors describe the theoretical background of the simulation elements and the relevant correlations through which they are applied, however they refrain from detailed scientific derivations.
