Emissivity of rocket plume particulates

  • 38 Pages
  • 2.17 MB
  • English
Naval Postgraduate School, Available from the National Technical Information Service , Monterey, Calif, Springfield, Va
ContributionsNetzer, David Willis, 1939-
The Physical Object
Pagination38 p. ;
ID Numbers
Open LibraryOL25487411M

Emissivity of rocket plume particulates. Item Preview remove-circle Share or Embed This Item. some content may be lost due to the binding of the book. Addeddate Call number ocn Camera Canon EOS 5D Mark II r David W. Netzer Emissivity of rocket plume particulates.

By Curtis D. Whisman. Get PDF (2 MB) Abstract. Approved for public release; distribution is unlimitedThe optical properties of motor aluminum oxide are required inputs to current plume signature prediction codes, such as SIRRM.

Accurate predictions are possible only if variations in the particle The optical properties of motor aluminum oxide are required inputs to current plume signature prediction codes, such as SIRRM.

Accurate predictions are possible only if variations in the particle emissivity due to changes in particle size, contamination, and changing temperature, etc.

are known. This investigation demonstrated a simplified method for determination of the emissivity of Rocket .6W/abstract. This banner text can have markup.

web; books; video; audio; software; images; Toggle navigation   Emissivity of Rocket Plume Particulates by Curtis D. Whisman Lieutenant, United States Navy B.S., New School for Social Research, Submitted in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE IN ASTRONAUTICAL ENGINEERING from the NAVAL POSTGRADUATE SCHOOL September Author: (~Ulit~ ~ W W 4 ' /utsD.

Whis   Influence of particulates on infrared emission from tactical rocket exhausts. Nelson; Local estimation of directional emissivity of light-scattering volumes using the Monte-Carlo method.

High Temperature, Vol. 45, No. 6 A two-particle model for rocket plume ://   1.

Description Emissivity of rocket plume particulates PDF

Introduction. Infrared radiation signature of a rocket motor exhaust plume is the most noticeable characteristic of flight vehicles. Research on the radiation mechanism of exhaust plumes is important for the design of underbody components and detection systems in the aircraft, the stealth performance, and improvement of ingredients of the solid ://   International Conference on Industrial Engineering, ICIE Modeling of Thermal Radiation of Heterogeneous Combustion Products in the Model Solid Rocket Engine Plume V.A.

Kuzmin, E.I. Maratkanova, I.A. Zagrai* Emissivity of rocket plume particulates book State University, 36, Moskovskaya, Kirov,Russia Abstract The paper contains the description of both the technique and   ROCKET EXHAUST PLUMES The behavior of rocket exhaust plumes is included in this book because it has gained importance in recent years.

In this chapter we provide an introduction to the subject, general background, a description of various plume eringcom/Data/Engineering/aeronautical_engineering/Rocket_Propulsion.

In an early paper by Morizumi and Carpenter (), the surface of a solid-propellant rocket exhaust jet was assumed to be gray and diffusely emitting, and the integral hemispherical emissivity was determined locally in each cross section by use of a solution for the 1D radiative transfer problem in an isotropically scattering Computational results for the spectral emissivity ε λ at T = K are presented in Fig.

Calculations were made by use of the DP 1 analytical solution (see the article, “The simplest approximation of double spherical harmonics”).

Similar dependences for the values of T = K and K can be found in the book by Dombrovsky () 1 day ago  This map shows the concentration of black carbon particulates, commonly called soot, on Aug. 25, The plume was generated by California’s huge eBook is an electronic version of a traditional print book THE can be read by using a personal computer or by using an eBook reader.

(An eBook reader can be a software application for use on a computer such as Microsoft's free Reader application, or a book-sized computer THE is used solely as a reading device such as Nuvomedia's Rocket eBook.) A survey was made of the spectral emissions from a 2 x 10 inch labscale hybrid rocket motor system.

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The emissions in the Ultraviolet-Visible ( nm), Near Infrared ( nm), and Mid An intrusive technique for particles capturing in supersonic-high temperature flows to be used in solid rocket motors plume characterization is proposed.

of alumina particulates in solid boost   ROCKET EXHAUST PLUMES. This chapter is an introduction to rocket exhaust plumes providing a general background, description of various plume phenomena and their effects, and references for further study.

The plume consists of moving hot exhaust gases (often with entrained small particles) issuing from rocket :// The work presents a method of complex investigation of thermal radiation emitted by heterogeneous combustion products in the model rocket engine plume. Realization of the method has allowed us to obtain full information on the results in all stages of calculations.

Dependence of the optical properties (complex refractive index), the radiation characteristics (coefficients and cross sections   (3) Plume flow field to understand the characteristics of the exhaust plume and to understand the radiative properties for base heating.

(4) Distribution of particulates in the exhaust plume of Solid Rocket Motors (SRM) and its effect of particulates in the exhaust field on radiative heat   Calhoun: The NPS Institutional Archive Theses and Dissertations Thesis Collection Investigation of the effects of solid rocket motor propellant composition on plume signature Launching of Titan and similar solid rocket motors adds to the stratospheric inorganic chlorine burden through emissions of HCl, atomic (Cl) and molecular (CL{sub 2}) directly into the stratosphere.

Before the exhaust plume disperses, plume concentrations of these species are orders of magnitude above the background values (Denison et al, ). point resulting in liquid and solid particles in the plume. Efforts to determine the optical properties of both liquid and solid A are ongoing.

It has been shown that the emissivity of pure A12 03 is orders of magnitude below that observed from rocket plumes [Ref. Experiments utilizing carbon and aluminum have shown   For these high altitudes, the drag forces on the particulates are mostly negligible with thermal radiation being the dominant physics.

Keywords: Hybrid CFD/DSMC, Plume flows, Non-equilibrium flows. PACS: Nd. INTRODUCTION. Computational modeling of rocket and missile exhaust plumes requires accurate physical models The plume flow and radiative base heating of a solid rocket have been important factors for rocket survivability in the modern battlefield, in which the standard of technology determines the dominant position.

To enhance rocket survivability and reduce base heating, infrared (IR) signatures emitted from an exhaust plume should be determined. In this work, therefore, IR signatures and radiative SinceNASA’s Space Technology Mission directorate has sponsored the research of graduate students who show significant potential to contribute to NASA’s goal of creating innovative new space technologies for the nation's science, exploration and economic future.

Five of the NSTGRO recipients come from Purdue; four of them from Mechanical  › Purdue. FLUENT-based modelling of rocket exhaust signatures FLUENT-based modelling of rocket exhaust signatures Rapanotti, John L.

ABSTRACT Commercially available ï¬ uid-dynamics solvers, such as FLUENT, are being developed to analyze and design missiles of increasing complexity. These robust solvers can be further adapted to predict spectral radiation :// @article{osti_, title = {Characterization of rocket propellant combustion products}, author = {Jenkins, R A and Nestor, C W and Thompson, C V and Gayle, T M and Ma, C Y and Tomkins, B A and Moody, R L}, abstractNote = {The overall objective of the work described in this report is four-fold: to (a) develop a standardized and experimentally validated approach to the sampling and chemical High-Altitude Plume Simulations for a Solid Propellant Rocket Jonathan M.

Burt∗ and Iain D. Boyd† University of Michigan, Ann Arbor, Michigan DOI: / A simulation scheme is proposed for flowfield and radiation analysis of solid rocket exhaust plumes at high :// The maximum speed a rocket can achieve is A: the speed of light.

B: the speed of sound.

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C: equal to the speed of its exhaust plume. D: less than the speed of its exhaust plume. E: greater than the speed of its exhaust plume but less than the speed of ://   The hot liquid and solid aluminum oxide in the plume is often the main source of radiation; approximately 90% of it ranges from to 5 μ m in wavelength, with peaks between 1 and 2 μ m [6,7].

It was shown that the emissivity of pure Al 2 O 3 is orders of magnitude below that observed from rocket plumes. As the gas is expanded through the   The low emissivity of liquid tin () is increased by mixing in carbon black, which distributes itself on the surface of the droplet.

Evaporation losses are avoided by enclosing the radiator in a 1 μm plastic film, which transmits radiation in the 2 to 20 μm (IR). Emissivity — The fraction of the radiation energy emitted in relation to the maximum possible emission from a surface, given the symbol ε.

Extinction coef?cient and absorption coef?cient — The extinction coef?cient is a measure of how the intensity of a beam of radiation passing through a media changes with length;?

by CRC Press LLC it is given the symbol  › 百度文库 › 语言/资格考试. In our book, Sections“System Integration and Engine Optimization,” and 15–4, “Rocket Motor Design Approach,” are preludes to this chapter and may contain some duplicate content.

Systems engineering is a useful discipline for rocket propulsion systems ://  Tech Briefs features cutting-edge technologies developed by innovators within NASA, the military, federal laboratories, universities, and commercial companies.

These technologies can be applied to develop new or improved products, and solve engineering or manufacturing problems. These tech briefs span a wide array of fields including electronics, materials, software, mechanical systems