Download or read book An Evaluation of the Post ignition Unblocking Behavior of Solid Propellant Aft end Ignition Systems Final Report written by and published by . This book was released on 1971 with total page 128 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 1971 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government Reports Announcements written by and published by . This book was released on 1971 with total page 1692 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 1971 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Final Report on Ignition and Combustion of Solid Propellants written by University of Utah. Department of Chemical Engineering and published by . This book was released on 1966 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ignition and Combustion of Solid Propellants written by Rex C. Mitchell and published by . This book was released on 1962 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: The original objective of this project was to study the ignition of composite propellants. It was broadened to encompass the study of other combustion transients, these being, so far, subjected only to exploratory investigation.
Download or read book Nonsteady Burning and Combustion Stability of Solid Propellants written by Luigi De Luca and published by AIAA (American Institute of Aeronautics & Astronautics). This book was released on 1992 with total page 924 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Solid propellant ignition and unsteady combustion processes written by Leonard H. Caveny and published by . This book was released on 1976 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: The research carried out under the grant was aimed at furthering the scientific understanding of nonsteady propellant combustion behavior in rocket motor chambers. Controlled nonsteady flow and burning conditions were produced in laboratory-scale solid rocket motors by developing a device that modulated the throat area of the primary nozzle. Modulation frequencies up to 2400 Hz were obtained. The modulated throat rocket motor is being used to acquire data using AP composite propellant grains. Cold flow tests were used to study the acoustic modes and nozzle discharge characteristics. Computerized techniques were developed for conducting spectral analyses of head-end and nozzle-end pressure data. In addition, the equations describing the nonsteady one-dimensional gas dynamics and propellant combustion were formulated, and a comprehensive numerical solution was developed. The present solution takes into account the couplings among the oscillating nozzle flow, the nonsteady chamber flow, and erosive burning. Since pressure and velocity oscillations can be made to occur and decay in high loading density rocket motors with realistic grain configurations, the experiment is expected to produce propellant/chamber response functions that are relatively easy to interpret, compared to the difficult to interpret T-burner response functions.
Download or read book The Use of an Arc Image Furnace for Solid Propellant Ignition Studies written by J. B. Dawes and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Solid Propellant Ignition by Convective Heating written by E. Karl Bastress and published by . This book was released on 1966 with total page 51 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of the study was to determine the effects of gas flow characteristics on solid propellant ignition behavior under convective heating. Ignition tests of three composite propellants were conducted in a hot-gas tunnel designed for convective heating experiments. Effects of gas velocity, test chamber configuration, and approach surface material on ignition were observed. It is concluded that ignition is initiated in the gas phase and is influenced by the local temperature and the local concentration of oxidizer decomposition products from upstream portions of the propellant surface. Either temperature or oxidizer concentration may control the time of ignition. When oxidizer concentration is controlling, the test configuration and gas velocity are important parameters. When temperature is controlling, ignition time can be correlated with heating rate alone. However, long propellant samples must be used to obtain meaningful data. Ignition times measured with long propellant samples are considerably lower than those measured with small samples. (Author).
Download or read book Ignition and Flame Propagation in Narrow Channels of Solid Propellant written by and published by . This book was released on 2003 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: Future direct-fire gun systems will require solid propellant at high loading density, which can be achieved with propellant in slab-type geometry such as radial discs, concentric wraps, or scrolls. Adjacent propellant slabs will form porosity as narrow sheet-like channels (with entirely different permeability than bundled sticks or cylindrical grains). Successful functioning of the charge requires rapid ignition and unimpeded flame propagation throughout this system of channels. The present investigation is concerned with characterizing the fundamental ignition and transient combustion behavior of energetic materials when packed in such configurations. A special laboratory apparatus was designed to isolate two propellant channels and allow direct comparison of the influence of variable gap width, wall composition (inert or JA2 here), and channel end closure. Diagnostics include multiple pressure time histories along each channel length and high-speed cinematography of the propagation of flame. Results are presented for several channel configurations, showing influence of JA2 or plastic wall material, gap widths of 0-0.89 mm, and channel downstream ends either open or closed.
Download or read book Research on Solid Propellant Ignition Part I Theoretical Search for Analytical Solutions to the Gas Phase Ignition Problem Part Ii Effects of Fuel Volatility and Other Physical and Chemical Factors on Ignitability written by C. H. WALDMAN and published by . This book was released on 1966 with total page 77 pages. Available in PDF, EPUB and Kindle. Book excerpt: The mechanism of ignition being analyzed is based on the hypothesis that the runaway reaction occurs in the gas phase, in a thin boundary layer adjacent to the solid propellant surface being heated, between the reactive fuel and oxident vapors liberated from the surface. Differential equations can be written for the diffusion of vapors from the surface, reaction in the gas phase, heat feedback to the surface, and heating up of the surface. As a first treatment the propellant is taken as a simple fuel and the oxidant is available only in the gas phase. An experimental study was conducted to determine the ignition delay time for various hydrocarbons and for solid propellants when exposed suddenly to a hot, high pressure oxidizing atmosphere. The main purpose was to measure effects that would help in a diagnostic way to decide whether the gas phase theory of ignition is based on the correct physical model. Attempts were made to relate the ignition delay to physical and chemical properties of the fuel to test the hypothesis that the ignition reaction of these compounds starts in the gas phase. A 19 foot long, 1.6 inch I.D. shock tube was used as an investigating tool. The test gas was heated to 1400K behind the reflected shock wave at the end wall of the shock tube. (Author).
Download or read book Ignition System written by Stan Gibilisco and published by . This book was released on 1989 with total page 195 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hypergolic Ignition and Combustion Phenomena in the Propellant System Aerozine 50 N2O4 written by Henry E. Perlee and published by . This book was released on 1967 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Solid Propellant Ignition and Response of Combustion to Pressure Transients written by Guenther Von Elbe and published by . This book was released on 1966 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of Additives on Ignition Delay and Chamber Pressurization of Space Ambient Engines written by Thomas F. Seamans and published by . This book was released on 1968 with total page 69 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of the program reported herein is to evaluate the effects of the addition of nitric oxide, acetonitrile and water on the ignition delay and pre-ignition chamber pressurization of space-ambient engines operating with nitrogen tetroxide/monomethyl hydrazine and nitrogen textroxide/aerozine-50. The evaluation has been made within the framework of a computer model of hypergolic ignition developed for the neat nitrogen tetroxide/monomethyl hydrazine propellant system. This report is the final report of the ten-month program. (Author).
Download or read book Ignition System NT EBM 18 05 written by S. Gibilisco and published by . This book was released on 1989* with total page 199 pages. Available in PDF, EPUB and Kindle. Book excerpt:
