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High Altitude Rocket Plume Structure Experiment And Calculations
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Book Synopsis High Altitude Rocket Plume Structure: Experiment and Calculations by : Frederick P. Boynton
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).
Book Synopsis HIGH ALTITUDE ROCKET PLUME STRUCTURE. by : J. R. Barthel
Download or read book HIGH ALTITUDE ROCKET PLUME STRUCTURE. written by J. R. Barthel and published by . This book was released on 1965 with total page 195 pages. Available in PDF, EPUB and Kindle. Book excerpt: A calculation of the flow field in the vicinity of a liquid-fueled rocket travelling through the ionosphere is described. A finite difference program is used to obtain both inviscid and viscous approximations to the exhaust and air flow field. The subsonic nose region is treated by an approximate procedure. Viscous effects are included in the so-called merged layer regime. Numerical calculations of the neutral flow field in the viscous layer approximation are presented for the flow at 180 km. The influence of the geomagnetic field on the motion of the ions is significant at altitudes above about 150 km. Simplified geometries are used to study the ion motion. At low altitudes (below about 150 km) the ions move with the neutrals. At high altitudes (above 250 km) the ions are more or less constrained by the geomagnetic field to a one-dimensional motion along the field lines except in a region relatively close to the missile where the density is sufficiently high to sweep the ions across the field lines. The mechanisms describing the motion of the ions across the field lines are examined in various limiting cases. (Author).
Book Synopsis Experimental Study of Simulated High Altitude Rocket Exhaust Plumes by : Wendell Norman
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).
Book Synopsis Analysis and Correlation of High Altitude Rocket Exhaust Plume Experimental Data by : Larry R. Ring
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).
Book Synopsis HIGH ALTITUDE ROCKET PLUMES. by : Philip O. Jarvinen
Download or read book HIGH ALTITUDE ROCKET PLUMES. written by Philip O. Jarvinen and published by . This book was released on 1966 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt: The gasdynamic structure of high altitude rocket plumes is investigated. A simple analytical model for the expansion of a gas into a vacuum is constructed and is shown to represent the expansion of exhaust gases from rocket motors into the region bounded by the inner shock wave and Mach disc. A comparison of the exhaust expansion model with solutions obtained with the method of characteristics is made and shows good agreement. Contours of constant density, electron density, and collision frequency in the exhaust plume of a typical rocket engine are determined. The blast wave theory of Hill et al is extended to allow the calculation of the size and shape of rocket plumes of solid propellant missiles. A method is derived which determines the plume drag of solid propellant motors. The method accounts for the fact that solid propellant rocket plume flow is a two phase flow of gas and solids and that the solids present in the exhaust take part in determining the mass flow but not the pressure or the expansion of the exhaust gases upon exit from the rocket nozzle. The plume expansion and resulting plume size is shown to depend on the thrust and the engine exit plane conditions of the gas phase of the two phase flow.
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 538 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Book Synopsis A Study of Rocket Exhaust Plumes at High Altitudes by : M. J. Wayte
Download or read book A Study of Rocket Exhaust Plumes at High Altitudes written by M. J. Wayte and published by . This book was released on 1969 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Study of Wind Tunnel Simulation of High Altitude Rocket Plumes by :
Download or read book A Study of Wind Tunnel Simulation of High Altitude Rocket Plumes written by and published by . This book was released on 1973 with total page 163 pages. Available in PDF, EPUB and Kindle. Book excerpt: A review of several simple, inviscid, high-altitude rocket plume models indicated the most accurate representation. Wind-tunnel plume measurements have been used to verify the Jarvinen-Hill model and to study the plume viscous mixing layers which simulated flight conditions by matching wind tunnel and flight plume Knudsen numbers. The HAPRAP data simulate typical ICBM sustainer flight in the 120 to 320 km altitude range.
Book Synopsis Plume Observables and Countermeasures by : Frederick P. Boynton
Download or read book Plume Observables and Countermeasures written by Frederick P. Boynton and published by . This book was released on 1972 with total page 67 pages. Available in PDF, EPUB and Kindle. Book excerpt: Further work on the radiative behavior of rocket exhaust plumes at high altitude is reported. Comparisons of calculated flow fields with wind- tunnel test data indicate that agreement is generally satisfactory if allowances are made for absolute calibrations of the data. Calculations of a plume emission according to some proposed mechanisms have been performed. It appears that production of OH by O atom attack on secondary H atoms in hydrocarbon fragments can result in substantial chemiluminescent emission from H2O formed by subsequent reaction of the OH. Some semi-quantitative analogies between rocket exhaust flows and material releases in the upper atmosphere are discussed, and derivations directed toward comparing collision energy distributions at very high altitudes are presented.
Book Synopsis Rocket Plume Radiance. Volume Vi. Calculation of Power from a Rocket Exhaust Plume as a Function of Altitude by : John T. Neu
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).
Book Synopsis Experimental Investigation of Rocket Plume Radiation at Low Altitudes by : W. H. Wurster
Download or read book Experimental Investigation of Rocket Plume Radiation at Low Altitudes written by W. H. Wurster and published by . This book was released on 1974 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: The report is a midterm technical report on a research program currently underway at Calspan on the experimental investigation of rocket plume radiation at low altitudes. The objectives of the program include the study of plume structure, gasdynamics and chemistry associated with the interaction of the plume with the ambient atmosphere. The experimental facilities, techniques and diagnostics are described in detail. The overall system as applied to this program is presently operational and undergoing initial checkout tests. The overall test parameter matrix in terms of rocket motor configuration, propellant mixtures, altitudes and ambient gas conditions is presented. (Modified author abstract).
Book Synopsis Technical Abstract Bulletin by : Defense Documentation Center (U.S.)
Download or read book Technical Abstract Bulletin written by Defense Documentation Center (U.S.) and published by . This book was released on 1967 with total page 784 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Bibliography, with Abstracts, of AFCRL Publications from 1 January to 31 March 1973 by : Air Force Cambridge Research Laboratories (U.S.)
Download or read book Bibliography, with Abstracts, of AFCRL Publications from 1 January to 31 March 1973 written by Air Force Cambridge Research Laboratories (U.S.) and published by . This book was released on 1973 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: This bibliography lists all AFCRL in-house reports, journal articles, and contractor reports from 1 January top 31 March 1973.
Book Synopsis Government-wide Index to Federal Research & Development Reports by :
Download or read book Government-wide Index to Federal Research & Development Reports written by and published by . This book was released on 1967 with total page 1062 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Guide To: Optimal Altitude by : Steve Ainsworth
Download or read book A Guide To: Optimal Altitude written by Steve Ainsworth and published by ARA Press Co. This book was released on 2018-10-31 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: Steve Ainsworth’s follow-on to Vertical Trajectory Systems, this booklet goes over the physics of rocket flight and how, analytically, to optimize it for maximum altitude. While calculus is not involved, an understanding of Newtonian mechanics at the high school physics level is required to make the best use of the material here. As with Vertical Trajectory Systems, this is not a book for beginners! It will, however, provide an excellent reference for rocketeers as they expand their knowledge in the hobby.
Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1973 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781722619367 Total Pages :56 pages Book Rating :4.6/5 (193 download)
Book Synopsis Low Altitude Plume Impingement Handbook by : National Aeronautics and Space Administration (NASA)
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...
