[PDF] The Paracone A Replacement For The Parachute eBook

Author : R. T. Kendall
Publisher :
Page : 31 pages
File Size : 21,11 MB
Release : 1964
Category : Airdrop
ISBN :

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Douglas Aircraft Company, Inc., has recently investigated the suitability of a high-drag device to replace the parachute. Called the Paracone, the device is an open cone of gas-expanded material that envelopes the man or payload. Stability is achieved due to the proper relationship between the center of gravity and the center of pressure; its shape and descent are much like that of a badminton shuttlecock. When the Paracone strikes the surface, the impact forces are absorbed by compression of the gases within the cone's point and by the air mattress onto which the reclining man is harnessed. In impact on water, the paracone will eliminate immersion and will serve as a life raft; on land it can be used as a temporary shelter. This is in contrast to the parachute's operation in which payload is fully exposed during descent and receives the full shock at impact.

Author : Elwood L. White
Publisher :
Page : 406 pages
File Size : 49,91 MB
Release : 1967
Category : Airdrop
ISBN :

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Analytical studies were conducted for the purpose of defining optimum systems for the aerial delivery of payloads in the 35,000 to 70,000-pound range and the aerial retrieval of payloads in the 3,000 to 10,000-pound range. A generalized approach was utilized in the analysis and evaluation of candidate systems for both functions. Included in the study was a definition of requirements for each operational phase, the development of criteria for concept classification and selection, feasibility analyses of candidate concepts, and a comparison of operational characteristics of delivery and retrieval concepts. Selected concepts were employed in the formulation of complete systems, for which detailed performance analyses and evaluations were conducted. Conclusions formed on the basis of the analytical study are presented.

Author :
Publisher : McGraw-Hill Companies
Page : 2400 pages
File Size : 19,75 MB
Release : 2003
Category : Reference
ISBN :

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For more than a quarter of a century, this amazingly comprehensive dictionary has been a standard international reference. Containing more than 115,000 terms and 125,000 definitions--from 100 areas of science and technology--this trusted resource provides definitions written in clear, simple language, understandable to the general reader, yet is consistent with the specialized use of the term. THE NEW SIXTH EDITION: * Thoroughly revised with 5,000 NEW TERMS * Each term includes a helpful pronunciation guide * Entries are complemented by 3,000 illustrations; appendices containing biographic listings, converison tables, taxonomic classification charts, and more * The only dictionary of scientific and technical terms to be thumb-indexed Invaluable to scientists, researchers, teachers, students, as well as interested lay persons, the McGraw-Hill Dictionary of Scientific and Technical Terms is truly the single best way for anyone to gain fluency in the language of science.