Download or read book Investigation of Fine Scale Three Dimensional Chemical Laser Nozzles Final Report on Research Work on Advanced Chemical Laser Nozzles written by A. I. Chalfant and published by . This book was released on 1976 with total page 141 pages. Available in PDF, EPUB and Kindle. Book excerpt: An investigation of fine-scale three-dimensional chemical laser (HF/DF) nozzles was carried out. Under Task I three fine-scale cold reaction nozzles having different aerodynamic features were designed. Under Task II the 1-in. x 8-in. cold reaction nozzle fabricated in Task I was tested. The three fine-scale cold reaction segments fabricated in Task I were tested in Task III. A 1-in. segment of the fine scale chain reaction nozzle was also tested in Task III. Under Task IV theoretical analyses were carried out on the vibrational population distribution in the chain reaction nozzle and on the effect of alternative reactants on the performance of the cold reaction nozzle. Under Task V additional extensive tests of the 1-in. x 8-in. cold reaction nozzle were carried out to obtain a better correlation of the performance of this nozzle. Under Tasks VI and VII variable geometry cavity and diffuser walls with and without boundary layer injection were designed, fabricated and assembled.

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 702 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book ERDA Energy Research Abstracts written by United States. Energy Research and Development Administration and published by . This book was released on 1977 with total page 1072 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Journal of Current Laser Abstracts written by and published by . This book was released on 1976 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Energy Research Abstracts written by and published by . This book was released on 1991-10 with total page 582 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Advanced Chemical Laser Nozzle Concepts written by J. C. Hyde and published by . This book was released on 1975 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this program was to investigate experimentally the performance characteristics of high-pressure recovery, high-performance, advanced nozzle concepts for supersonic chemical lasers. Tests were conducted at small-scale (1 by 3 inches) sizes using scanning mirrors and a high-spatial-resolution IR spectrometer to examine performance. A small water-cooled pitot probe was used to scan the flowfield at the cavity exit to measure potential pressure recovery. A large-scale version of one of the nozzle configurations was designed and fabricated during this program and tested at the Mesa facility by the Aerospace Corporation. The Mesa results provided size scaling data for projecting Laser Engineering Test Facilities (LETF) results to larger sizes. Screening tests were performed on an advanced nozzle concept which provides increased mixing rates, larger throat dimensions, and decreased fabrication time and cost. The results of the screening tests indicated that the nozzles performed as predicted.

Download or read book Monthly Catalogue United States Public Documents written by and published by . This book was released on 1991-03 with total page 1508 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 1983 with total page 1044 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Government Reports Announcements Index written by and published by . This book was released on 1991-03 with total page 1004 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Government Reports Annual Index written by and published by . This book was released on 1992 with total page 1396 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Chemical Laser Advanced Nozzle Development written by R. A. Dickerson and published by . This book was released on 1976 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes experimental and analytical efforts conducted to develop a new chemical laser nozzle concept, the tri-stream (or three-stream) chemical laser nozzle. This nozzle expands the cavity fuel and the fluorine atom (combustor effluent) flows through the same nozzle. The fluorine and cavity fuel streams are separated by a layer of diluent flow to inhibit intermixing and reaction of the fluorine atom and cavity fuel in the nozzle. These three streams (fluorine atom, diluent, and cavity fuel) form a basic unit, or element, of the device, and the number of elements per unit length of nozzle is the most important parameter affecting the achievable performance. Tri-stream nozzles were designed, fabricated, and tested in 2.5-inch-long by 0.4-inch-high nozzle exit configurations. Laser power tests of the tri-stream nozzles were conducted in a free-jet test facility capable of pumping to cavity pressures as low as 2.5 torr. The maximum specific power achieved with DF* lasing using all helium diluent was slightly in excess of 80 kJ/lb. The maximum DF* specific power achieved with N2 nozzle diluent was approximately 60 kJ/lb.

Download or read book An Analytical Investigation of the Effect of Nozzle Throat Radius of Curvature on Gasdynamic Laser Gain written by Jerry L. Wagner and published by . This book was released on 1972 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt: Numerical solutions for CO2-N2 gasdynamic laser gain and maximum available power are used to examine the influence of nozzle throat radius of curvature and throat height on laser performance. Conventional gasdynamic laser nozzles incorporate minimum length supersonic contours with sharp throats in order to obtain rapid vibrational freezing of the gas. The study considers the effect of complete rounding of the throat (on both the subsonic and supersonic sides), up to a radius of cruvature equal to three throat heights. Such rounding allows easier manufacture and alignment of the nozzles, and should result in improved flow quality. The present results show a 15-percent reduction in laser gain and maximum available power due to complete rounding of the throat. (Author).

Download or read book Technical Abstract Bulletin written by and published by . This book was released on 1979 with total page 752 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Symposium on Turbulent Shear Flows written by and published by . This book was released on with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book International Aerospace Abstracts written by and published by . This book was released on 1999 with total page 682 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Selected Papers on Holographic Interferometry written by R. S. Sirohi and published by SPIE-International Society for Optical Engineering. This book was released on 2001 with total page 780 pages. Available in PDF, EPUB and Kindle. Book excerpt: Applications of holographic interferometry are so vast that they are limited only by the imagination of the researchers. This collection represents a variety of HI applications, from micro-crack detection in ancient paintings to holographic testing of nuclear technology.

Download or read book Documentation of Plasma Physics Pt 1 Experimental Plasma Physics and Theoretical Plasma Physics written by and published by . This book was released on 1975 with total page 838 pages. Available in PDF, EPUB and Kindle. Book excerpt: