Download or read book Rocket Exhaust Plume air Interaction at High Altitude Via Navier Stokes Solver written by Yehuda Tassa and published by . This book was released on 1989 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book 31st AIAA Thermophysics Conference written by and published by . This book was released on 1996 with total page 730 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Numerical Solution of the Navier Stokes Equations for Rocket Plumes at 120 Km Altitude written by L. C. Himmell and published by . This book was released on 1974 with total page 79 pages. Available in PDF, EPUB and Kindle. Book excerpt: Results are presented of a first-principle calculation of steady flow to a distance of 300 ft aft of an Atlas booster emitting exhaust gases. Agreement between the air shock locus reported and that predicted by the simpler model of Boynton, improves with distance from the vehicle. Boynton's air-plume shock radius is smaller by factors of 2.2, 1.8 and 1.5, at distances of 100, 200, and 300 ft, respectively, aft of the vehicle. For the jet shock, the corresponding ratios at the same three downstream locations are 1.5, 1.1 and 1.0, respectively. No evidence of Helmholtz instability was found in the calculated flow-field. (Author).
Download or read book International Aerospace Abstracts written by and published by . This book was released on 1999 with total page 974 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Investigation at High Altitudes of Rocket Exhaust Plume Symmetry and Interaction with a Plate with a Scaled MOL Thruster written by and published by . This book was released on 1969 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt: A 1-lb-thrust rocket engine was tested to determine plume symmetry and Mach number contours at 400,000-ft altitude. Total pressure surveys were made with and without a flat plate in the plume. The tests without the plate indicated the plume was symmetrical, and measured results compared well with computed values. In tests with the plate, the shock interaction and boundary-layer buildup on the plate were measured.
Download or read book Rocket Exhaust Plume Phenomenology written by Frederick S. Simmons and published by AIAA (American Institute of Aeronautics & Astronautics). This book was released on 2000 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new book deals with the phenomenology of rocket exhaust plumes as the targets of space-based surveillance systems. Topics include the physical and chemical processes in rocket engines and their exhaust plumes, particularly in regard to flow properties, gas dynamics, and radiative mechanisms that are responsible for the generation of emission in rocket exhaust plumes at infrared and other wavelengths. System designers in a number of defense-related areas will be able to put the information in this book to immediate use.
Download or read book Numerical Methods in Laminar and Turbulent Flow written by and published by . This book was released on 1991 with total page 952 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book 34th Aerospace Sciences Meeting Exhibit written by and published by . This book was released on 1996 with total page 672 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Aerospace America written by and published by . This book was released on 1989 with total page 730 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Low Altitude Plume Impingement Handbook written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-08 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt: Plume Impingement modeling is required whenever an object immersed in a rocket exhaust plume must survive or remain undamaged within specified limits, due to thermal and pressure environments induced by the plume. At high altitudes inviscid plume models, Monte Carlo techniques along with the Plume Impingement Program can be used to predict reasonably accurate environments since there are usually no strong flowfield/body interactions or atmospheric effects. However, at low altitudes there is plume-atmospheric mixing and potential large flowfield perturbations due to plume-structure interaction. If the impinged surface is large relative to the flowfield and the flowfield is supersonic, the shock near the surface can stand off the surface several exit radii. This results in an effective total pressure that is higher than that which exists in the free plume at the surface. Additionally, in two phase plumes, there can be strong particle-gas interaction in the flowfield immediately ahead of the surface. To date there have been three levels of sophistication that have been used for low altitude plume induced environment predictions. Level 1 calculations rely on empirical characterizations of the flowfield and relatively simple impingement modeling. An example of this technique is described by Piesik. A Level 2 approach consists of characterizing the viscous plume using the SPF/2 code or RAMP2/LAMP and using the Plume Impingement Program to predict the environments. A Level 3 analysis would consist of using a Navier-Stokes code such as the FDNS code to model the flowfield and structure during a single calculation. To date, Level 1 and Level 2 type analyses have been primarily used to perform environment calculations. The recent advances in CFD modeling and computer resources allow Level 2 type analysis to be used for final design studies. Following some background on low altitude impingement, Level 1, 2, and 3 type analysis will be described. Smith, Sheldon D. Unspecified C...
Download or read book 92 2842 92 2869 written by and published by . This book was released on 1992 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book High Altitude Rocket Plume Structure Experiment and Calculations written by Frederick P. Boynton and published by . This book was released on 1972 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: Values of impact pressure and species number density measured in a wind tunnel experiment simulating a high-altitude rocket exhaust plume are compared with values calculated with a computer code. Considering a number of uncertainties in the absolute calibrations of the experiment, agreement is generally considered satisfactory for conditions in the mixing region between plume and free stream gases. However, in the forward part of the plume, the data suggests that free-stream gas penetrates further into the plume than the calculation predicts; the cause of this discrepancy is unknown. (Author).
Download or read book Rocket Plume Radiance Volume Vi Calculation of Power from a Rocket Exhaust Plume as a Function of Altitude written by John T. Neu and published by . This book was released on 1960 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: The results of computation of the power available from a rocket plume are given. A simplified model was used which assumes the sequential occurrence of exhaust gases expansion to ambient pressure, interaction with the atmosphere, and finally dissipation of power. It is suggested that the experimentally determined drop in radiation at about 180,000 feet is probably due to a power limitation and cessation of afterburning. Power available above about 180,000 feet is due to emission phenomena occurring before the plume equilibrates (expands, etc.) with the ambient atmosphere. It is noted that no fundamental reason exists for expecting missile thrust as a function of altitude to correlate with rocket radiance. A correlation of radiance from different missiles at a given altitude vs thrust has some theoretical justification, however, propellant flow rate is suggested as a better quantity than thrust for this correlation. (Author).
Download or read book Experimental Study of Simulated High Altitude Rocket Exhaust Plumes written by Wendell Norman and published by . This book was released on 1971 with total page 179 pages. Available in PDF, EPUB and Kindle. Book excerpt: The gas dynamic structure of high altitude rocket plumes has been studied in a low density tunnel to obtain basic data on plume size and shape and to determine the extent of the mixing region between the free-stream and rocket gases. The rocket was simulated by specially designed ejectors using helium and CO2 as the gases, with conditions chosen to simulate a 100,000-lb-thrust rocket at an altitude of 80 km. Data taken included impact pressure surveys, density measurements of the free-stream and plume gas, temperature measurements, and color photographs. The last three of these were taken using electron beam techniques. The result of the study is a set of basic data. Analysis and interpretation of the data will be performed under a separate study. (Author).
Download or read book Analysis and Correlation of High Altitude Rocket Exhaust Plume Experimental Data written by Larry R. Ring and published by . This book was released on 1973 with total page 107 pages. Available in PDF, EPUB and Kindle. Book excerpt: Results are presented of a study for evaluating the applicability and accuracy of rocket motor and exhaust plume gasdynamic analytical models. Evaluation of these analytical models was based upon correlation of analytical predictions with experimental data obtained in the High Altitude Plume Radiation Program. The effects of oxidizer-to-fuel ratio gradients, combustion efficiency, combustion chamber mixing, nozzle throat expansion and chemistry model were ascertained. Non-continuum effects and closed form analytical techniques were also considered. (Modified author abstract).
Download or read book Aeronautical Engineering written by and published by . This book was released on 1993 with total page 932 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).
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1991 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt:
