Download or read book Dynamics of the Opening of Reefed Parachutes written by Ishwar Chandra Bhateley and published by . This book was released on 1961 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development and Testing of a New Reefing System to Reduce Parachute Opening Shock Characteristics During Seat Ejection written by and published by . This book was released on 1992 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report summarizes the initial testing of a new parachute slider reefing system to control the opening dynamics of the military C-9 parachute. It has been theorized that if one could control the opening of the parachute canopy used during emergency ejections, the parachute opening forces on the crewmember could he significantly reduced. The report addressed the reefing system modification and summarizes the initial testing results of the new slider reefing system to control the parachute opening dynamics.
Download or read book Gemini Spacecraft Parachute Landing System written by John Vincze and published by . This book was released on 1966 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dynamics of the Opening Parachute written by J. R. Foote and published by . This book was released on 1952 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A model of the opening parachute is proposed and the equations of continuity and of motion are written. The two main parameters are: a coefficient to account for cloth porosity, and a coefficient to provide some choking of the mouth due to looseness of the cloth. The equations are solved under certain assumptions and the results are used to predict both how the force on the suspended load and how the opening rate vary with time. Experimental data is used to select values of the porosity coefficient for various altitudes. In each case the predicted shock force maximum is of the proper order of magnitude, as shown by experiment. A drag term is used which is the sum of the usual type of viscous drag term and a set of inertial drag terms calculated by F.S. Weinig for an expanding sphere. The viscous drag term is of leading importance. The drag coefficient is varied with the porosity coefficient by means of a type of formula indicated by experiment. This gives a greater drag coefficient at higher altitudes and helps to cause a greater shock force at higher altitudes and helps to cause a greater shock force by giving a greater opening rate and less parachute filling time.
Download or read book NASA Technical Note written by and published by . This book was released on 1975 with total page 958 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Symposium on Parachute Technology and Evaluation written by Earl C. Myers and published by . This book was released on 1964 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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.
Download or read book Manned Spacecraft Design Principles written by Pasquale M. Sforza and published by Elsevier. This book was released on 2015-11-13 with total page 649 pages. Available in PDF, EPUB and Kindle. Book excerpt: Manned Spacecraft Design Principles presents readers with a brief, to-the-point primer that includes a detailed introduction to the information required at the preliminary design stage of a manned space transportation system. In the process of developing the preliminary design, the book covers content not often discussed in a standard aerospace curriculum, including atmospheric entry dynamics, space launch dynamics, hypersonic flow fields, hypersonic heat transfer, and skin friction, along with the economic aspects of space flight. Key concepts relating to human factors and crew support systems are also included, providing users with a comprehensive guide on how to make informed choices from an array of competing options. The text can be used in conjunction with Pasquale Sforza's, Commercial Aircraft Design Principles to form a complete course in Aircraft/Spacecraft Design. - Presents a brief, to-the-point primer that includes a detailed introduction to the information required at the preliminary design stage of a manned space transportation system - Involves the reader in the preliminary design of a modern manned spacecraft and associated launch vehicle - Includes key concepts relating to human factors and crew support systems - Contains standard, empirical, and classical methods in support of the design process - Culminates in the preparation of a professional quality design report
Download or read book High altitude Flight Test of a Reefed 12 2 meter diameter Disk gap band Parachute with Deployment at a Mach Number of 2 58 written by John S. Preisser and published by . This book was released on 1971 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt: A reefed B.2-meter nominal-diameter (40-ft) disk-gap-band parachute was flight tested as part of the NASA Supersonic High Altitude Parachute Experiment (SHAPE) program. A three-stage rocket was used to drive an instrumented test payload to an altitude of 43.6 km (143 000 ft) and a Mach number of 2.58 where the parachute was deployed by means of a mortar. After a time delay of about 8.5 seconds, the parachute was disreefed at a Mach number of 0.99. The report contains an analysis of parachute inflation, drag, and stability for both the reefed and unreefed parts of the test. In addition, detailed descriptions of the test parachute, the reefing system, and the parachute packing procedurea are included.
Download or read book WADC Technical Report written by United States. Wright Air Development Division and published by . This book was released on 1953 with total page 1278 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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.
Download or read book An Investigation of the Initial Century Series Ringsail Parachute written by Leland C. Norman and published by . This book was released on 1970 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Aerodynamic Deployable Decelerator Performance Evaluation Program written by E. Bloetscher and published by . This book was released on 1967 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Aerodynamic Deployable Decelerator Performance-Evaluation Program (ADDPEP) aims to advance the state of the art by developing the most effective analytical and empirical techniques for designing aerodynamic deployable decelerators and for evaluating these engineering techniques through wind-tunnel and free-flight tests. During ADDPEP Phase 2, two types of decelerators were investigated: large reefed supersonic parachutes and raminflated balloon-type BALLUTEs. The areas investigated included analytical and engineering design, material capabilities, fabrication techniques, and wind-tunnel and free-flight tests. Free-flight tests were performed on a hemisflo parachute having a nominal 16-ft-diameter canopy, a 10-percent extended skirt, and a 14-percent porosity. This design was tested for 200,000-lb opening loads, deployment Mach numbers were 1.50, 1.63, and 1.84 at altitudes of 13,700, 15,500, and 10,500 ft, respectively. The results confirmed that this parachute has excellent aerodynamic characteristics and adequate strength. Five-foot-diameter BALLUTEs, both textile and metal, were fabricated. These were designed for a broad spectrum of deployment conditions ranging from Mach 2.7 at 73,000 ft to Mach 10 at 225,000 ft. The textile BALLUTEs were wind-tunnel and free-flight tested; the metal BALLUTEs were wind-tunnel tested only. Flight tests were limited to Mach 9.7, and wind-tunnel tests to Mach 3. The flight test data supported wind-tunnel data, which indicated that excellent stability and structurally adequate designs can be attained with five-foot-diameter BALLUTEs.
Download or read book Scale Factors for Parachute Opening written by Richard L. Barton and published by . This book was released on 1967 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings written by Earl C. Myers and published by . This book was released on 1964 with total page 856 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1972 with total page 1034 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.
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)
