Download or read book Research and Development of Gliding Parachutes aerosail written by R. F. Kinzy and published by . This book was released on 1963 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this program was the development of gliding parachutes for use in recovery of manned spacecraft. The program consisted of designing models of new gliding parachute configurations, wind-tunnel testing these models singly and in clusters, and evaluating their performance, as follows: a) Development of 2-foot-diameter rigid model canopies and 12-foot-diameter fabric model parachutes. b) Tests of the rigid canopies in the Norair 7-x 10-foot wind tunnel and tests of the 12-foot-diameter fabric parachutes in the Ames 40- x 80-foot wind tunnel. c) Analysis of the performance of 3-foot-diameter fabric model parachutes d) Analysis and documentation of all test results.
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 182 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Technical Papers written by and published by . This book was released on 1964 with total page 286 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 Investigation of Various Textile Parachutes and Control Systems to Achieve Steerability written by V. F. Riley and published by . This book was released on 1964 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt: This research program covers the detailed investigation of gliding parachutes and their necessary guidance and control systems to achieve a controlled approach to and touchdown at a pre-selected site. Theoretical and analytical investigations have been conducted to determine system feasibility and performance limits; and to establish the configuration of a flexible, self-inflating canopy capable of meeting the program objectives.
Download or read book Aerodynamic Characteristics of the Parafoil Glider and Other Gliding Parachutes written by Helmut G. Heinrich and published by . This book was released on 1962 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: A newly conceived gliding parachute, called the parafoil glider, and several existing glide parachutes have been examined with regard to their general stability, resulting stable angle of attack, and lift to drag ratio. The parafoil glider assumed stable angles of attack up to 50° against the vertical which represents a lift to drag ratio of approximately 1.2. The investigated existing parachutes had lift to drag ratios of less than unity. The tangential force coefficient of the parafoil glider amounts to approximately 1.5 at the position of the stable angle of attack.
Download or read book The Performance and Design of Ram air Gliding Parachutes written by J. S. Lingard and published by . This book was released on 1981 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Available literature on ram-air parachutes generally describe either experimental studies or the development of specific systems. Little fundamental analysis has been attempted. This Report reviews current knowledge and, where appropriate, formulates a theoretical basis for ram-air parachute design. Theoretical analysis fo inflation is found to be intractable due to the complication of reefing devices. A theoretical model for glide performance is developed from wing theory. Predictions compare favourably with experiment. Improvements in aerodynamic efficiency with increasing aspect ratio are largely negated by increased line drag. Optimum aspect ratio and line length and the potential for glide performance improvement are discussed. The effects of lift/draf ratio, wing laoding, control deflection, and wind, on rate of descent an dhorizontal velocity are demonstrated. Glide and control effectiveness are strongly influenced by rigging. A dynamic stability model is presented. Longitudinal control, flare and gust response are investigated. Stability is shown to increase with increasing altitutde, store mass and line length."--Summary, page 1.
Download or read book A Volume of Technical Papers written by and published by . This book was released on 1964 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Drop Tests of 16 000 sq in Model Parachutes written by Frederick J. Stimler and published by . This book was released on 1954 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report summarizes the results of the parachute model drop-test program conducted in the Goodyear Aircraft Corporation airship dock at Akron, Ohio. Twenty-seven different models of the following types with 16,000 sq. in. total canopy area were tested: Solid Flat, Solid Extended Skirt, Solid Spherical, Solid Conical, Airfoil, Exeter Type 12, Glide Surface, Ring Slot and FIST Ribbon. An "information" sheet is provided for each of the parachute models and includes a short statement describing general behavior of the parachute during descent and a basic reference list where more information may be found concerning similar parachutes.
Download or read book Wind tunnel Tests of a Series of Parachutes Designed for Controllable Gliding Flight written by James A. Weiberg and published by . This book was released on 1967 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ribbon and Gliding Type Parachutes Evaluated in the 7 by 10 Foot Transonic Wind Tunnel written by Jonah Ottensoser and published by . This book was released on 1975 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: An experiment has been conducted in the NSRDC 7- x10-foot transonic tunnel for the Sandia Corporation to evaluate various parachute parameters. The experiment consisted of three main parts: the first phase evaluated the disreefing characteristics of the various parachutes as well as the drag forces before, during and after disreefing; the second phase measured the pressure distribution around the chute as well as the grag forces; and the fingal phase evaluated the disreefing and drag characteristics of gliding type parachutes. The free stream dynamic pressure varied from 65 to 500 psf.
Download or read book Investigation of Various Textile Parachutes and Control Systems to Achieve Steerability written by E. M. Linhart and published by . This book was released on 1966 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt: This research program covers the detailed investigation of gliding parachutes and their necessary guidance and control systems to achieve a controlled approach to, and touchdown at a pre-selected site. Theoretical and analytical investigations have been conducted to determine system feasibility and performance limits, and to establish the configuration of a flexible, self-inflating canopy capable of meeting the program objectives.
Download or read book Development of a Gliding Guided Ribbon Parachute for a Transonic Speed Deployment written by William B. Pepper and published by . This book was released on 1971 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt: Parachute retardation is often a necessity on some drop vehicles to help control performance and trajectory. With the increased time of fall, dispersion suffers from unknown winds. A guided parachute system could be used to improve accuracy in many applications. Earlier work with guided parachutes at Sandia was done with solid chutes with one gore missing, or with the parafoil. Both of these systems were suited for low-speed deployments only. To develop a system for higher-speed deployments, recent research has been directed at using conventional ribbon parachutes, modified to provide a glide and turn capability without materially affecting opening reliability, structural integrity, or effective drag.
Download or read book Development of Methods for Assessment of Gliding Parachute Applications written by and published by . This book was released on 1982 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: In order to assess the possible utility of gliding parachutes, it was necessary to develop a set of methods for predicting behavior of gliding parachutes. The extent of agreement between simulation and flight data indicates that the primary factors included in the longitudinal stability analysis and in the 6DOF simulation are correct. Although the stability analysis predicts only steady-state behavior, it forms the basis required for analysis of dynamic behavior in the body-fixed XZ plane. The agreement seen in descent rate would not be possible with an invalid stability model. Of course, in turning flight during the response immediately following the deflection, other factors such as the assumed spanwise distribution of lift and drag become predominant. The agreement in yaw rate best illustrates correctness of this aspect of the 6DOF model. The mechanics driving motion during a spin are quite difficult to understand; however, the agreement shown in the descent rate indicates that the mass ratios assumed are acccurate and further justifies the assumption of spanwise distribution of lift and drag. In further development activities on gliding parachute systems, the 6DOF model will serve to guide exploratory work and will be updated for more accurate application to different canopies and to larger systems.
Download or read book Ribbon and Gliding Type Parachutes Evaluated in the 7 by 10 Foot Transonic Wind Tunnel written by Jonah Ottensoser and published by . This book was released on 1975 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt: An experiment has been conducted in the NSRDC 7- x10-foot transonic tunnel for the Sandia Corporation to evaluate various parachute parameters. The experiment consisted of three main parts: the first phase evaluated the disreefing characteristics of the various parachutes as well as the drag forces before, during and after disreefing; the second phase measured the pressure distribution around the chute as well as the grag forces; and the fingal phase evaluated the disreefing and drag characteristics of gliding type parachutes. The free stream dynamic pressure varied from 65 to 500 psf.
Download or read book A Philosophical Basis for the Use of High performance Gliding Parachutes in Ejection Seat Aircraft written by Manley C. Butler and published by . This book was released on 1985 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report presents evidence and arguments for the use of ram-air inflated, gliding parachute wings in ejection seat aircraft. The advantages of the parachute are presented, along with numerous performance charts showing the effects of glide and wind on impact energy, impact velocity and angle, potential landing area and potential range. Performance data gathered in the Aircrew Gliding Escape System (AGES) Program are presented and contrasted with similar data from competing parachute systems. The analysis shows that the ram-air inflated gliding parachute wing is the most promising parachute available in the near future and offers significant benefits in safety and performance over the 28-foot diameter, flat circular parachute.
Download or read book Inflation Analysis of Ram Air Inflated Gliding Parachutes written by William L. Garrard and published by . This book was released on 1995 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt:
