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Author : S. P. Vanka
Publisher :
ISBN 13 :
Total Pages : 116 pages
Book Rating : 4.:/5 (317 download)
Download or read book Numerical Investigation of Hot Gas Ingestion by STOVL Aircraft written by S. P. Vanka and published by . This book was released on 1998 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : National Aeronautics and Space Administration (NASA)
Publisher : Createspace Independent Publishing Platform
ISBN 13 : 9781722013004
Total Pages : 28 pages
Book Rating : 4.0/5 (13 download)
Download or read book A Numerical Study of the Hot Gas Environment Around a Stovl Aircraft in Ground Proximity written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-28 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: The development of Short Takeoff Vertical Landing (STOVL) aircraft has historically been an empirical- and experience-based technology. In this study, a 3-D turbulent flow CFD code was used to calculate the hot gas environment around an STOVL aircraft operating in ground proximity. Preliminary calculations are reported for a typical STOVL aircraft configuration to identify key features of the flow field, and to demonstrate and assess the capability of current 3-D CFD codes to calculate the temperature of the gases ingested at the engine inlet as a function of flow and geometric conditions. Vanoverbeke, Thomas J. and Holdeman, James D. Glenn Research Center RTOP 505-62-21...
Author : H. Clyde McLemore
Publisher :
ISBN 13 :
Total Pages : 164 pages
Book Rating : 4.:/5 (31 download)
Download or read book Generalized Hot-gas Ingestion Investigation of Large-scale Jet VTOL Fighter-type Models written by H. Clyde McLemore and published by . This book was released on 1970 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hot gas ingestion investigation of large scale jet vertical takeoff fighter type aircraft.
Author : Thomas J. VanOverbeke
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (11 download)
Download or read book A Numerical Study of the Hot Gas Environment Around a STOVL Aircraft in Ground Proximity written by Thomas J. VanOverbeke and published by . This book was released on 1988 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : H. Clyde McLemore
Publisher :
ISBN 13 :
Total Pages : 152 pages
Book Rating : 4.:/5 (633 download)
Download or read book Generalized Hot-gas Ingestion Investigation of Large-scale Jet VTOL Fighter-type Models written by H. Clyde McLemore and published by . This book was released on 1970 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : D. M. Fricker
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (11 download)
Download or read book Calculations of Hot Gas Ingestion for a STOVL Aircraft Model written by D. M. Fricker and published by . This book was released on 1992 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 44 pages
Book Rating : 4.:/5 (317 download)
Download or read book STOL and STOVL Hot Gas Ingestion and Airframe Heating Tests in the NASA Lewis 9- by 15-foot Low-speed Wind Tunnel written by and published by . This book was released on 1989 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 892 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 1994 with total page 892 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : National Aeronautics and Space Administration (NASA)
Publisher : Createspace Independent Publishing Platform
ISBN 13 : 9781722803674
Total Pages : 32 pages
Book Rating : 4.8/5 (36 download)
Download or read book Stol and Stovl Hot Gas Ingestion and Airframe Heating Tests in the NASA Lewis 9- By 15-Foot Low-Speed Wind Tunnel written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-11 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: Short takeoff and landing (STOL) and advanced short takeoff and vertical landing (STOVL) aircraft are being pursued for deployment near the end of this century. These concepts offer unique capabilities not seen in conventional aircraft: for example, shorter takeoff distances and the ability to operate from damaged runways and remote sites. However, special technology is critical to the development of this unique class of aircraft. Some of the real issues that are associated with these concepts are hot gas ingestion and airframe heating while in ground effects. Over the past nine years, NASA Lewis Research Center has been involved in several cooperative programs in the 9- by 15 Foot Low-Speed Wind Tunnel (LSWT) to establish a database for hot gas ingestion and airframe heating. The modifications are presented that were made in the 9- by 15-Foot LSWT, including the evolution of the ground plane, model support system, and tunnel sidewalls; and flow visualization techniques, instrumentation, test procedures, and test results. The 9- by 15-Foot LSWT tests were conducted at full scale exhaust nozzle pressure ratios. The headwind velocities varied from 8 to 120 kn depending on the concept (STOL or STOVL). Typical compressor-face distortions (pressure and temperature), ground plane contours, and model surface temperature profiles are presented. Johns, Albert L. Glenn Research Center RTOP 505-62-71...
Author : H. Clyde McLemore
Publisher :
ISBN 13 :
Total Pages : 268 pages
Book Rating : 4.:/5 (31 download)
Download or read book Hot-gas Ingestion Investigation of Large-scale Jet VTOL Fighter-type Models written by H. Clyde McLemore and published by . This book was released on 1968 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : W. Minkowycz
Publisher : CRC Press
ISBN 13 : 9781560324416
Total Pages : 456 pages
Book Rating : 4.3/5 (244 download)
Download or read book Advances In Numerical Heat Transfer written by W. Minkowycz and published by CRC Press. This book was released on 1996-11-01 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the first volume in the series. It analyzes several fundamental methodology issues in numerical heat transfer and fluid flow and identifies certain areas of active application. The finite-volume approach is presented with the finite-element methods as well as with energy balance analysis. Applications include the latest development in turbulence modeling and current approaches to inverse problems.
Author :
Publisher :
ISBN 13 :
Total Pages : 250 pages
Book Rating : 4.:/5 (317 download)
Download or read book NAS Technical Summaries: Numerical Aerodynamic Simulation Program, March 1990 - February 1991 written by and published by . This book was released on 1991 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Kerry Mitchell
Publisher :
ISBN 13 :
Total Pages : 460 pages
Book Rating : 4.:/5 (317 download)
Download or read book Proceedings of the 1985 NASA Ames Research Center's Ground-Effects Workshop written by Kerry Mitchell and published by . This book was released on 1987 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 360 pages
Book Rating : 4.:/5 (317 download)
Download or read book NAS Technical Summaries: Numerical Aerodynamic Simulation Program, March 1991 - February 1992 written by and published by . This book was released on 1992 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Rahim Lavi
Publisher :
ISBN 13 :
Total Pages : 194 pages
Book Rating : 4.:/5 (227 download)
Download or read book Parametric Investigation of Vtol Hot Gas Ingestion and Induced Jet Effects in Ground Proximity written by Rahim Lavi and published by . This book was released on 1967 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt: A large-scale VTOL test bed designed around the Ames Lift Engine Pod was used for ground-proximity tests at the Ames Research Center VTOL test facility, under sponsorship of the Naval Air Systems Command. Objectives were to obtain parametric data on gas ingestion and jet effects experienced by jet-powered VTOL configurations. Results showed that ingestion and induced-lift effects are configuration- and time-dependent; for many configurations the degree of ingestion experienced cannot be tolerated in operational aircraft. This contrasts with results of recent small-scale tests. Wing geometry, size, location; engine arrangement, lift/cruise engine location and pitch attitude have strong influences on ingestion tendencies and jet-induced effects. Near-field temperature environment appears to be influenced by engine arrangement and number of operating engines. Rapid inlet temperature rise with a high temperature distortion at the compressor face sometimes resulted in engine stall. Hot gases expelled from the engine subsequent to stall occasionally caused stalling of adjacent engines. Large induced force levels and moments resulted from near-ground operation of many configurations. Positive- and negative-induced lift were measured. Aerodynamic suckdown results with a single jet-fundamental geometry configuration are in agreement with empirical correlation of small-scale tests. Results showed that transient measurements with rapid-response thermocouple and recording equipment are needed for realistic assessment of VTOL environment and inlet temperature rise caused by ingestion. (Author).
Author :
Publisher :
ISBN 13 :
Total Pages : 882 pages
Book Rating : 4.3/5 (243 download)
Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on 1990 with total page 882 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : National Aeronautics and Space Administration (NASA)
Publisher : Createspace Independent Publishing Platform
ISBN 13 : 9781721138678
Total Pages : 170 pages
Book Rating : 4.1/5 (386 download)
Download or read book Low and High Speed Stovl Configurations in Ground Effect written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-08-20 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt: The problem of hot gas ingestion in V/STOL and STOVL aircraft has motivated a set of experimental studies. Two-, three-, and four-jet configurations in cross flow were studied in ground effect. The results presented here were based on a quantitative, concentration measurement technique know as marker nephelometry. The effects of configuration, velocity ratio (freestream over jet velocity), model height, and inlet suction were investigated. The experiments were conducted in three parts. In the first part, comparisons of low speed two-, three-, and four-jet configurations were made. Measurements were made in the planes beneath the models in ground effect. As the number of jets increased, the vortical structures in the flowfield were found to move further upstream due to the increased total momentum. In the second part of the experiments, measurements were made at the inlet entry plane of the low speed two- and three-jet configurations in ground effect. The results indicated that ingestion occurred intermittently, especially in the upper portions of the inlets. The highest levels of concentrations were measured at a model height of two jet diameters. As the model height increased, the concentration levels decreased. Finally, a high speed, two-jet configuration without inlet suction was studied. The flowfield structures were generally found to move further downstream as the jet velocity increased at a constant velocity ratio. Holdeman, James D. (Technical Monitor) and Vukits, Thomas J. Glenn Research Center NAG3-943; WBS 22-708-90-21
