Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Supersonic Parachute Research
Download Supersonic Parachute Research full books in PDF, epub, and Kindle. Read online Supersonic Parachute Research ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Supersonic Parachute Research by : Rudi J. Berndt
Download or read book Supersonic Parachute Research written by Rudi J. Berndt and published by . This book was released on 1962 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: Supersonic vehicles require aerodynamic deceleration systems that will function efficiently and predictably at supersonic speeds over a wide range of altitudes. Deceleration from supersonic speeds at high altitudes involves problems that require new approaches. To meet these greater requirements, extensive applied research is being conducted in the field of aerodynamic deceleration. This research is expected to provide information for designing adequate deceleration devices that will perform consistently so that recovery trajectories can be predicted. Parachute canopies are being investigated since parachutes normally provide a high ratio of aerodynamic drag to weight and bulk. Reliable data exist for Guide-Surface and Flat Circular Ribbon parachute canopies at transonic speeds and dynamic pressures as great as 2500 lb/sq ft. At supersonic speeds, however, inflation has been erratic, drag forces reduced, and materials failed at a fraction of rated strength. Probable causes for this erratic behavior are discussed. (Author).
Book Synopsis Supersonic Parachute Development by : Cook Research Laboratories (Firm)
Download or read book Supersonic Parachute Development written by Cook Research Laboratories (Firm) and published by . This book was released on 1960 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Analytical and Experimental Investigation of Supersonic Parachute Phenomena by : L. W. Sims
Download or read book Analytical and Experimental Investigation of Supersonic Parachute Phenomena written by L. W. Sims and published by . This book was released on 1963 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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:
Book Synopsis Inflation and Performance of Three Parachute Configurations from Supersonic Flight Tests in a Low-density Environment by : Charles H. Whitlock
Download or read book Inflation and Performance of Three Parachute Configurations from Supersonic Flight Tests in a Low-density Environment written by Charles H. Whitlock and published by . This book was released on 1969 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ten flight tests of modified-ringsail, disk-gap-band, and cross parachute configurations with deployment at Mach numbers and dynamic pressures corresponding to conditions expected during entry into a Martian atmosphere have been completed. Comparison of flight results indicates that theoretical snatch force values were never exceeded when the deployment techniques of these tests were used. Opening loads showed no definite trend with Mach number. Values for filling times compared favorably with generally accepted empirical curves based on 15-percent geometric porosity. Canopy stability was good when Mach numbers were below 1.4 for the modified-ringsail and disk-gap-band configurations.
Book Synopsis A Supersonic Parachute Based on the Inlet Diffuser Concept by : Heinrich Helmut G.
Download or read book A Supersonic Parachute Based on the Inlet Diffuser Concept written by Heinrich Helmut G. and published by . This book was released on 1963 with total page 31 pages. Available in PDF, EPUB and Kindle. Book excerpt: Several aerodynamic principles are postulated and explored which in connection with a related combination of a solid cone and a flexible canopy lead to the development of an aerodynamic decelerator, called the Supersonic Guide Surface Parachute.
Book Synopsis A Supersonic Parachute Based on the Inlet Diffuser Concept by : Helmut (Mathematiker) Heinrich
Download or read book A Supersonic Parachute Based on the Inlet Diffuser Concept written by Helmut (Mathematiker) Heinrich and published by . This book was released on 1963 with total page 31 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Theoretical Parachute Investigations by : Helmut G. Heinrich
Download or read book Theoretical Parachute Investigations written by Helmut G. Heinrich and published by . This book was released on 1961 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contents: Investigation of wake effects on the behavior of parachutes and other retardation devices behind large bodies; Investigation of basic stability parameters of conventional parachutes; Theoretical study of supersonic parachute phenomena; Theoretical analysis of the dynamics of the opening parachute; Statistical analysis of extraction time, deployment time, opening time, and drag coefficient for aerial delivery parachutes and systems; Gliding aerodynamic decelerator; Effective porosity studies; Study of flow patterns of aerodynamic decelerators by means of the surface wave analogy; Stress analysis of the T-10 troop parachute; Aerodynamic characteristics of the parachute stabilized A-21 cargo container; Aerodynamic characteristics of the cross and wagon-wheel type parachutes; Determination of mass flow through parachutes with inherent geometric porosity.
Book Synopsis The Effects of Design Parameters and Local Flow Fields on the Performance of Hyperflo Supersonic Parachutes and High Dynamic Pressure Parachute Concepts by : Leland W. Sims
Download or read book The Effects of Design Parameters and Local Flow Fields on the Performance of Hyperflo Supersonic Parachutes and High Dynamic Pressure Parachute Concepts written by Leland W. Sims and published by . This book was released on 1965 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wake flow field surveys were conducted in the wind tunnel behind several side strut mounted forebodies in the Mach number range from 2 to 5. Studies of the effects of design parameters on Hyperflo supersonic parachutes, and of high dynamic pressure parachute configurations deployed in such wakes were performed. Wake pressure distributions indicated an asymmetry due to the forebody support structure, and a disturbance to the flow field which emanates from the support structure. The latter was most pronounced at Mach numbers above 3. Modification to the wake caused by an air bleed into the forebody base was also indicated. Normal, but higher than predicted axial wake Mach number distributions were found to exist in the forebody wakes. Hyperflo tests at Mach numbers 5 to 5.5 showed abnormally large parachute oscillations with models located at large downstream positions aft of the forebodies. The effects of Hyperflo design parameters and forebody type on model performance are only qualitatively indicated by the tests conducted. (Author).
Book Synopsis Investigation of the Characteristics of 6-foot Drogue-stabilization Ribbon Parachutes at High Altitudes and Low Supersonic Speeds by : Clinton T. Johnson
Download or read book Investigation of the Characteristics of 6-foot Drogue-stabilization Ribbon Parachutes at High Altitudes and Low Supersonic Speeds written by Clinton T. Johnson and published by . This book was released on 1960 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: Performance data are presented for two types of ribbon parachutes. The parachutes were forcibly deployed from an air-launched test vehicle at altitudes from 55,000 feet to 70,000 feet and at Mach numbers between 0.92 and 1.52. Opening shock, steady-state drag performance, and canopy-porosity effects are evaluated with respect to Mach number and dynamic pressure. The conical canopy design appears to function far better than the flat canopy at supersonic deployment speeds. The relatively high-porosity conical design improves the parachute stability, with the added benefit of a low opening shock. The drag efficiency of the conical canopy is equivalent to that of the flat canopy having 50-percent-lower porosity. Riser elasticity and length also appear to be important parameters affecting the parachute stability. Reducing the weight of the test vehicle by a factor of one-third had a negligible effect on the stability and drag characteristics of the parachute.
Book Synopsis Final Design of Sandia's Supersonic Parachute Test Vehicle by : M.T. Kane
Download or read book Final Design of Sandia's Supersonic Parachute Test Vehicle written by M.T. Kane and published by . This book was released on 1960 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report presents the final aerodynamic and mechanical design of Sandia's supersonic parachute test vehicle. This vehicle, a two-stage, rocket-boosted, ground-launched vehicle, is being used in a research program to obtain data on the operation of fabric parachutes or other drag devices at supersonic speeds.
Book Synopsis Study of Parachute Performance at Low Supersonic Deployment Speeds: Effects of Changing Scale and Clustering by : PAUL E. PEDERSEN
Download or read book Study of Parachute Performance at Low Supersonic Deployment Speeds: Effects of Changing Scale and Clustering written by PAUL E. PEDERSEN and published by . This book was released on 1961 with total page 1 pages. Available in PDF, EPUB and Kindle. Book excerpt: Prachute design and operational data were collected on a series of rocket powered sled tests conducted on the Air Force Flight Test Center Track at Edwards Air Force Base, California. Parachute deployment velocities range between Mach 0.76 and 1.57. The majority of the test parachutes were designed to have a drag area of approximately 15 square feet. Limited testing was accomplished with some configurations of reduced drag area to investigate effects of changing scale. Clustering of parachutes was also investigated with triple clusters of FIST Ribbon parachutes. The data obtained during the program included inflation characteristics, opening shock factors, drag forces, inflated area relationships, and stability of the parachutes through the velocity ranges investigated. (Author).
Book Synopsis THEORETICAL PARACHUTE INVESTIGATIONS. by :
Download or read book THEORETICAL PARACHUTE INVESTIGATIONS. written by and published by . This book was released on 1961 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contents: Investigation of wake effects on the behavior of parachutes and other retardation devices behind large bodies at subsonic and supersonic speeds Investigatiion of basic stability parameters of conventional parachutes Theoretical study of supersonic parachute phenomena Theoretical analysis of the dynamics of theopening parachute Statistical analysis of extraction time, deployment time, opening time, and drag coefficient for aerial delivery parachutes and systems Gliding aerodynamic decelerator Effective porosity studies Study of flow patterns of aerodynamic decelerators by means of the surface wave analogy Stress analysis of the T-10 Troop Parachute.
Book Synopsis Theoretical and Experimental Studies of Supersonic Turbulent Wakes and Parachute Performance by : Robert M. Nerem
Download or read book Theoretical and Experimental Studies of Supersonic Turbulent Wakes and Parachute Performance written by Robert M. Nerem and published by . This book was released on 1968 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Supersonic and Transonic Deployment of Ribbon Parachutes at Low Altitudes by : Randall C. Maydew
Download or read book Supersonic and Transonic Deployment of Ribbon Parachutes at Low Altitudes written by Randall C. Maydew and published by . This book was released on 1972 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis U.S. Government Research Reports by :
Download or read book U.S. Government Research Reports written by and published by . This book was released on 1964 with total page 1118 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Modeling and Simulation of the Inflation of Supersonic Parachute for Mars Landing by : Zhengyu Huang
Download or read book Modeling and Simulation of the Inflation of Supersonic Parachute for Mars Landing written by Zhengyu Huang and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The numerical simulation of nonlinear fluid-structure interaction problems is significant in many engineering and scientific applications. Examples include aircraft flutter in transonic flows, underwater implosions, pipeline explosions, flapping wings for micro aerial vehicles, and biomedical flows in heart and blood vessels, reactor fuel performance and so on. These problems are generally highly nonlinear, feature multiple scales and strong coupling effects, and might require heterogeneous discretizations for the various physics subsystems. Developing high-fidelity multidisciplinary models for such problem, with an emphasis on real world applications, is the motivation of the thesis. More specifically, the goal is to understand the supersonic parachute inflation dynamics for Mars landing. In 1972, NASA recorded the 1st known instance of a successful parachute operation in the wake of a blunt object at supersonic speeds, during the preparation for the Viking missions to Mars. However, the problem still remains open. "The stress analysis of the canopy cloth is extremely complicated, since maximum stresses occur during opening, which is when the shape and load change rapidly." (Houmard, the Goodyear Aerospace Corporation, 1972) "Technology in parachute structural analysis is far from desirable and no authoritative individual and/or company can really be said to exist." (Alley, NASA, 1972) "No information exists fully explaining parachute behavior in supersonic flow." (Lingard, UK-based Vorticity Ltd, 2010) This thesis first describes an embedded boundary framework for highly nonlinear fluid-structure interaction problems. This is based on the Finite Volume method with Exact two-material Riemann Problems (FIVER), developed in Farhat Research Group [1], and capable of handling evolving material interfaces, including structural fracture. The framework further incorporates a parallel adaptive mesh refinement based on newest vertex bisection, therefore, becomes more efficient for problems with large structure deformations and evolving shock waves. And several modifications are proposed to relieve the ill-conditioning near the fluid-structure interface due to extrapolations, hence, the framework becomes mesh position and orientation independent and delivers smooth pressure coefficient and skin-friction coefficient. Furthermore, this thesis makes a variety of contributions to make the framework more suitable for the parachute inflation simulations. These contributions include a homogeneous porous wall model to capture the porous effect of the canopy on the fluid, and a suspension line treatment that allows for the interactions of the sub-grid scale suspension lines with the flow. Finally, several full-size parachute inflation simulations in the low-density, low-pressure Mars atmosphere are conducted. The computed drag performance is in good agreement with the data collected by the NASA Curiosity Rover during its Mars atmospheric entry. Besides, basic material failure analysis is conducted, which indicates the parachute decelerator system of Curiosity survives with a safety factor about 5.0. This framework demonstrates the potential of using CFD and FSI based simulation tools for the future supersonic parachute design. In addition to the parachute project, several other related projects are reported in this thesis. The first one is a new approach to learning constitutive relations from indirect observation data and its uncertainty quantification for material coupons, such as parachute fabric. In contrast to direct input-output data curve-fitting, this approach focuses on problems, where obtaining comprehensive model input-output data is difficult. But indirect data, like deflections of the structure coupon under different load conditions, are available. Traditional approaches, such as the finite element method, bridge the indirect data with neural network-based~(or its counterparts) constitutive relation models. Its mathematical properties, like accuracy and applicability properties of the approach and the strength of neural networks, are thoroughly studied. Another project aims to extend the multiphysics framework to higher order. Arbitrarily high-order, stable, partitioned solvers are constructed, where different subsystems are modeled and discretized separately, and the resulting equations are solved independently. These solvers are used with the discontinuous Galerkin method for fluid-structure interaction problems with moderate structure deformations.
