Analysis of Parachute Opening Dynamics with Supporting Wind Tunnel Experiements

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ISBN 13 :
Total Pages : 14 pages
Book Rating : 4.:/5 (578 download)

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Book Synopsis Analysis of Parachute Opening Dynamics with Supporting Wind Tunnel Experiements by : Helmut G. Heinrich

Download or read book Analysis of Parachute Opening Dynamics with Supporting Wind Tunnel Experiements written by Helmut G. Heinrich and published by . This book was released on 1968* with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: The study is concerned with identification of significant terms in the process of parachute inflation. For finite mass cases, the equations of motion for parachutes inflating in free air and in wind tunnel experiments are established and organized in view of the nonsteady terms of canopy size, systems velocity, included and apparent masses, and the time derivatives of these terms. Wind tunnel experiments are described, the results of which yield graphical and numerical time functions for the significant terms of the equation of motion and the force-time histories. The wind tunnel results are compared with full size test information and certain identities are shown. The significant terms are combined to functions unique for the test conditions and substituted in the equation of motion. Force-time functions so derived compare satisfactorily with measured force histories and the contributions of the individual terms to the instantaneous parachute force can be seen.

Analysis of the Opening Dynamics of Solid Flat and Ringslot Parachutes with Supporting Wind Tunnel Experiments

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ISBN 13 :
Total Pages : 80 pages
Book Rating : 4.:/5 (227 download)

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Book Synopsis Analysis of the Opening Dynamics of Solid Flat and Ringslot Parachutes with Supporting Wind Tunnel Experiments by : Helmut G. Heinrich

Download or read book Analysis of the Opening Dynamics of Solid Flat and Ringslot Parachutes with Supporting Wind Tunnel Experiments written by Helmut G. Heinrich and published by . This book was released on 1972 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt: The equations of motion for parachutes inflating under finite mass conditions in a horizontal flow wind tunnel are established and organized in view of the nonsteady terms of canopy size, velocity, included and apparent masses, and the time derivatives of these terms. Wind-tunnel experiments with solid flat and ringslot parachutes are described, the results of which yield graphical and numerical time functions for the terms of the derived equation of motion. The wind-tunnel results are compared with full-size test information and certain identities are shown. The numerical functions are substituted in the equation of motion and force-time histories are calculated.

Analysis of the Opening Dynamics of Solid Flat and Ringslot Parachutes with Suppporting Wind Tunnel Experiments

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ISBN 13 :
Total Pages : 138 pages
Book Rating : 4.:/5 (17 download)

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Book Synopsis Analysis of the Opening Dynamics of Solid Flat and Ringslot Parachutes with Suppporting Wind Tunnel Experiments by : Helmut G. Heinrich

Download or read book Analysis of the Opening Dynamics of Solid Flat and Ringslot Parachutes with Suppporting Wind Tunnel Experiments written by Helmut G. Heinrich and published by . This book was released on 1972 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt: The equation of motion for parachutes inflating under finite mass conditions in a horizontal flow wind tunnel is established and organized in view of the nonsteady terms of canopy size, velocity, included and apparent masses, and the time derivatives of these terms. Wind-tunnel experiments with solid flat and ringslot parachutes are described, the results of which yield graphical and numerical time functions for the terms of the equation of motion. In the test range under investigation, these functions appear to be unique. The wind-tunnel results are compared with fill-size test information and certain identities are shown. The numerical functions are substituted in the equation of motion and force-time histories are calculated. Calculated and measured forces agree fairly well, and the calculations show the contributions of the various terms to the total farachute force.

Wind-tunnel Investigation of Inflation of Disk-gap-band and Modified Ringsail Parachutes at Dynamic Pressures Between 0.24 and 7.07 Pounds Per Square Foot

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ISBN 13 :
Total Pages : 30 pages
Book Rating : 4.F/5 ( download)

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Book Synopsis Wind-tunnel Investigation of Inflation of Disk-gap-band and Modified Ringsail Parachutes at Dynamic Pressures Between 0.24 and 7.07 Pounds Per Square Foot by : Charles H. Whitlock

Download or read book Wind-tunnel Investigation of Inflation of Disk-gap-band and Modified Ringsail Parachutes at Dynamic Pressures Between 0.24 and 7.07 Pounds Per Square Foot written by Charles H. Whitlock and published by . This book was released on 1969 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: Exploratory wind-tunnel tests of the disk-gap-band and modified ringsail parachute configurations have been conducted at dynamic pressures between 0.24 and 7.07 lb/ft2 (11 and 339 N/m2). Both parachutes exhibited positive inflation characteristics over the range of the tests within technique limitations. The disk-gap-band configuration required less time and distance to inflate than the modified ringsail configuration did.

Pressure Distribution During Parachute Opening

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ISBN 13 :
Total Pages : 78 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Pressure Distribution During Parachute Opening by : H. D. Melzig

Download or read book Pressure Distribution During Parachute Opening written by H. D. Melzig and published by . This book was released on 1966 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt: An experimental investigation and correlative analysis were conducted to determine the pressure distribution over the surface of parachute canopies during the period of inflation for the infinite mass case and to correlate pressure coefficients with inflating canopy shapes. Parachute canopy models of Circular Flat, 10% Extended Skirt, Ringslot, and Ribbon designs were tested under infinite mass conditions in a 9 x 12 ft low speed wind tunnel. External and internal pressure values were measured at various locations over the surface of the model canopies throughout the period of inflation, and generalized canopy profile shapes were obtined by means of photographic analysis.

WInd-tunnel Investigation of the Opening Characteristics, Drag, and Stability of Several Hemispherical Parachutes

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ISBN 13 :
Total Pages : 34 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis WInd-tunnel Investigation of the Opening Characteristics, Drag, and Stability of Several Hemispherical Parachutes by : Stanley H. Scher

Download or read book WInd-tunnel Investigation of the Opening Characteristics, Drag, and Stability of Several Hemispherical Parachutes written by Stanley H. Scher and published by . This book was released on 1949 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: An investigation has been conducted to determine the opening characteristics of several hemispherical parachutes and to study the influence of the parachute design variables on these opening characteristics. The effects of design variables on the drag and stability characteristics of the parachutes were also evaluated.

Opening Dynamics of a T-10 Parachute with Inflation Aids

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ISBN 13 :
Total Pages : 57 pages
Book Rating : 4.:/5 (179 download)

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Book Synopsis Opening Dynamics of a T-10 Parachute with Inflation Aids by : Helmut G. Heinrich

Download or read book Opening Dynamics of a T-10 Parachute with Inflation Aids written by Helmut G. Heinrich and published by . This book was released on 1970 with total page 57 pages. Available in PDF, EPUB and Kindle. Book excerpt: The characteristic times and opening forces were studied for various inflation aid configurations of a model T-10 parachute. Finite mass wind tunnel tests were conducted in the horizontal return wind tunnel at a snatch velocity of 70 fps with a suspended load of 1.1 lbs. Relative to results of the standard T-10 parachute, the percentage decrease in the characteristic time and the corresponding percentage increase in the peak force were presented for five centerline, three internal parachutes and two centerline-internal combinations.

Transonic Wind-tunnel Tests of a Lifting Parachute Model

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ISBN 13 :
Total Pages : 24 pages
Book Rating : 4.:/5 (317 download)

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Book Synopsis Transonic Wind-tunnel Tests of a Lifting Parachute Model by :

Download or read book Transonic Wind-tunnel Tests of a Lifting Parachute Model written by and published by . This book was released on 1976 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Aeronautical Engineering

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ISBN 13 :
Total Pages : 580 pages
Book Rating : 4.F/5 ( download)

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Book Synopsis Aeronautical Engineering by :

Download or read book Aeronautical Engineering written by and published by . This book was released on 1971 with total page 580 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)

A Collection of Technical Papers

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ISBN 13 :
Total Pages : 542 pages
Book Rating : 4.0/5 ( download)

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Book Synopsis A Collection of Technical Papers by :

Download or read book A Collection of Technical Papers written by and published by . This book was released on 1975 with total page 542 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Parachute Inflation Process Wind-tunnel Study

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ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (563 download)

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Book Synopsis Parachute Inflation Process Wind-tunnel Study by : Edwin Pounder

Download or read book Parachute Inflation Process Wind-tunnel Study written by Edwin Pounder and published by . This book was released on 1956 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The report presents results of an experimental study of the parachute inflation process. The investigation was carried out in a low speed wind tunnel using small cloth models, and an analysis is presented which gives a basis for extrapolation of the data recorded to any reasonably low Mach number case. The drag of the parachutes and the shapes of the canopies during the inflation process are studied in considerable detail, and some qualitative studies of the flow fields are conducted. The principle variables studied are parachute type, velocity (dynamic pressure), and canopy porosity. The theoretical analysis develops a procedure by which full scale characteristics can be predicted from wind tunnel data, and several examples are computed to illustrate the technique.

Analysis of Wind Tunnel Tests Concerning Disengagement Impulses of Parachute Suspension Lines and Risers

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ISBN 13 :
Total Pages : 88 pages
Book Rating : 4.:/5 (689 download)

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Book Synopsis Analysis of Wind Tunnel Tests Concerning Disengagement Impulses of Parachute Suspension Lines and Risers by : Helmut G. Heinrich

Download or read book Analysis of Wind Tunnel Tests Concerning Disengagement Impulses of Parachute Suspension Lines and Risers written by Helmut G. Heinrich and published by . This book was released on 1972 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: A 28-ft solid flat parachute, United States Air Force Standard C-9 canopy was deployed from its deployment bag in a wind tunnel running at speeds of 115, 150, and 200 fps. By means of electronic instrumentation the impulses were recorded that developed when the risers and suspension lines are disengaged from their ties and stow loops. The disengagement impulses were repeatable, and their numerical value was established and confirmed. The influence of the impulses upon the velocity of the moving mass is significant.

Scientific and Technical Aerospace Reports

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ISBN 13 :
Total Pages : 702 pages
Book Rating : 4.:/5 (31 download)

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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 702 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Recovery System Design Guide

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ISBN 13 :
Total Pages : 502 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Recovery System Design Guide by : E. G. Ewing

Download or read book Recovery System Design Guide written by E. G. Ewing and published by . This book was released on 1979 with total page 502 pages. Available in PDF, EPUB and Kindle. Book excerpt: This document serves as the third revision of the USAF Parachute Handbook which was first published in 1951. The data and information represent the current state of the art relative to recovery system design and development. The initial chapters describe representative recovery applications, components, subsystems, material, manufacture and testing. The final chapters provide empirical data and analytical methods useful for predicting performance and presenting a definitive design of selected components into a reliable recovery system.

Parachute Recovery Systems

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ISBN 13 :
Total Pages : 524 pages
Book Rating : 4.0/5 ( download)

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Book Synopsis Parachute Recovery Systems by : Theo W. Knacke

Download or read book Parachute Recovery Systems written by Theo W. Knacke and published by . This book was released on 1992 with total page 524 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this manual is to provide recovery system engineers in government and industry with tools to evaluate, analyze, select, and design parachute recovery systems. These systems range from simple, one-parachute assemblies to multiple-parachute systems, and may include equipment for impact attenuation, flotation, location, retrieval, and disposition. All system aspects are discussed, including the need for parachute recovery, the selection of the most suitable recovery system concept, concept analysis, parachute performance, force and stress analysis, material selection, parachute assembly and component design, and manufacturing. Experienced recovery system engineers will find this publication useful as a technical reference book; recent college graduates will find it useful as a textbook for learning about parachutes and parachute recovery systems; and technicians with extensive practical experience will find it useful as an engineering textbook that includes a chapter on parachute- related aerodynamics. In this manual, emphasis is placed on aiding government employees in evaluating and supervising the design and application of parachute systems. The parachute recovery system uses aerodynamic drag to decelerate people and equipment moving in air from a higher velocity to a lower velocity and to a safe landing. This lower velocity is known as rate of descent, landing velocity, or impact velocity, and is determined by the following requirements: (1) landing personnel uninjured and ready for action, (2) landing equipment and air vehicles undamaged and ready for use or refurbishment, and (3) impacting ordnance at a preselected angle and velocity.

29th International Symposium on Shock Waves 2

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Publisher : Springer
ISBN 13 : 331916838X
Total Pages : 822 pages
Book Rating : 4.3/5 (191 download)

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Book Synopsis 29th International Symposium on Shock Waves 2 by : Riccardo Bonazza

Download or read book 29th International Symposium on Shock Waves 2 written by Riccardo Bonazza and published by Springer. This book was released on 2015-07-10 with total page 822 pages. Available in PDF, EPUB and Kindle. Book excerpt: This proceedings present the results of the 29th International Symposium on Shock Waves (ISSW29) which was held in Madison, Wisconsin, U.S.A., from July 14 to July 19, 2013. It was organized by the Wisconsin Shock Tube Laboratory, which is part of the College of Engineering of the University of Wisconsin-Madison. The ISSW29 focused on the following areas: Blast Waves, Chemically Reactive Flows, Detonation and Combustion, Facilities, Flow Visualization, Hypersonic Flow, Ignition, Impact and Compaction, Industrial Applications, Magnetohydrodynamics, Medical and Biological Applications, Nozzle Flow, Numerical Methods, Plasmas, Propulsion, Richtmyer-Meshkov Instability, Shock-Boundary Layer Interaction, Shock Propagation and Reflection, Shock Vortex Interaction, Shock Waves in Condensed Matter, Shock Waves in Multiphase Flow, as well as Shock Waves in Rarefield Flow. The two Volumes contain the papers presented at the symposium and serve as a reference for the participants of the ISSW 29 and individuals interested in these fields.

Wind-tunnel Investigation of Drag and Stabili- Ty of Parachutes at Supersonic Speeds

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ISBN 13 :
Total Pages : 30 pages
Book Rating : 4.:/5 (317 download)

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Book Synopsis Wind-tunnel Investigation of Drag and Stabili- Ty of Parachutes at Supersonic Speeds by : Nickolai Charczenko

Download or read book Wind-tunnel Investigation of Drag and Stabili- Ty of Parachutes at Supersonic Speeds written by Nickolai Charczenko and published by . This book was released on 1964 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: