Analysis of Parachute Deployment of Heavy Cargo PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Analysis of Parachute Deployment of Heavy Cargo PDF full book. Access full book title Analysis of Parachute Deployment of Heavy Cargo by Helmut G. Heinrich. Download full books in PDF and EPUB format.
Author: Helmut G. Heinrich Publisher: ISBN: Category : Air drop Languages : en Pages : 80
Book Description
All available experimental values of extraction time, deployment time, opening time, and effective drag coeficient of standard serial delivery systems have been gathered and reduced to comparable conditions. A study has been made to determine the governing parameters in the delivery sequence, and representative values of these parameters have been determined through statistical analysis where possible.
Author: Helmut G. Heinrich Publisher: ISBN: Category : Air drop Languages : en Pages : 80
Book Description
All available experimental values of extraction time, deployment time, opening time, and effective drag coeficient of standard serial delivery systems have been gathered and reduced to comparable conditions. A study has been made to determine the governing parameters in the delivery sequence, and representative values of these parameters have been determined through statistical analysis where possible.
Author: Eugene L. Haak Publisher: ISBN: Category : Airdrop Languages : en Pages : 80
Book Description
Opening shock, snatch forces, opening times, rates of descent, and down times of a number of man-carrying, cargo, and extraction parachutes are calculated on the basis of analytical equations and certain other assumptions. Comparisons of the calculated data with full scale experimental values are somewhat limited, but show reasonable agreement when available. This report represents a first step in an attempt to catalog full scale experimental values from which, eventually, more exact analytical methods can be derived.
Author: William B. Walcott Publisher: ISBN: Category : Drag (Aerodynamics) Languages : en Pages : 56
Book Description
A study was conducted to determine the effects of changing scale upon drag coefficients, filling time, peak opening force, and stability for single, unreefed textile parachute canopies. The investigation was confined to Flat Circular, Extended Skirt, Ringslot, Ribless Guide Surface, Circular Flat Ribbon, and Conical Ribbon parachutes operating in the subsonic flow regime at altitudes below 20,000 feet. As an integral part of the study, a survey of the existing literature and test data, a compilation of all pertinent data, and recommendations for future experimental investigations were made. Scaling equations with associated 95-percent confidence intervals were developed for the drag coefficient of the Flat Circular and Extended Skirt parachutes through the use of multiple regression analysis which the indicates the significant variables and their functional forms. Because the available data was poorly distributed, the equations will have to be used circumspectly to avoid misleading conclusions.
Author: D. F. McVey Publisher: ISBN: Category : Parachutes Languages : en Pages : 12
Book Description
A method for predicting deployment and inflation of reefed ribbon parachutes is presented. The method is based on integration of axial and radial momentum equations developed in the paper. Axial and radial forces are assumed to be describable by drag and radial force coefficients. Computer solutions of the equations are compared to measured parachute loads and to parachute mouth and maximum diameters from tests of 23- and 76-ft diameter conical ribbon parachutes. Comparison of load histories indicated that snatch loads depend to a large extent on deployment bag design and packing influences. Computed loads and parachute size histories for the inflation process compared favorably with flight data. The concept of a radial force coefficient appears to have considerable merit as a means of computing inflation for most parachutes.
Author: John S. Preisser Publisher: ISBN: Category : Parachutes Languages : en Pages : 70
Book Description
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.
Author: Helmut G. Heinrich
Author: Helmut G. Heinrich
Author: Earle K. Huckins
Author: Earle K. Huckins
Author: Eugene L. Haak
Author: William B. Walcott
Author: D. F. McVey
Author: John S. Preisser
Author: 
Author: Earl C. Myers
Author: