Download or read book Mathematical Model and Computer Program for the Ascent and Descent of High altitude Tethered Balloons written by George R. Doyle and published by . This book was released on 1968 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The results of this preliminary study indicate that it is feasible to launch and retrieve high-altitude balloons under certain conditions. It has been shown that a 30 million ft3 balloon can be launched in a Summer I-75 percent wind profile at 2000 ft/min, and retrieved in the same wind at -200 ft/min with 20 percent of the helium valved off. Although launch and retrieval are possible in the Winter I wind profile, it is more restricted. The 79 million ft3 balloon in the Winter I 25 percent wind show results similar to the 30 million ft3 balloon in the Summer I 75 percent wind. The results of this feasibility study can be used as preliminary design criteria for components of the tethered balloon-systems-balloon, tether and winch.
Download or read book Mathematical Model and Computer Program for the Ascent and Descent of High altitude Tethered Balloons Schedule Sub line Item 1ad written by George R Doyle (Jr) and published by . This book was released on 1968 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt: The results of the preliminary study indicate that it is feasible to launch and retrieve high-altitude balloons under certain conditions. It was shown that a 30 million cu ft balloon can be launched in a Summer I-75 percent wind profile at 2000 ft/min, and retrieved in the same wind at -200 ft/min with 20 percent of the helium valved off. Although launch and retrieval are possible in the Winter I wind profile, it is more restricted. The 79 million cu ft balloon in the Winter I 25 percent wind show results similar to the 30 million cu ft balloon in the Summer I 75 percent wind. The results of the feasibility study can be used as preliminary design criteria for components of the tethered balloon-systems-balloon, tether and winch. (Author).
Download or read book Mathematical Model for the Ascent and Descent of a High altitude Tethered Balloon written by George R. Doyle and published by . This book was released on 1968 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings Fifth AFCRL Scientific Balloon Symposium written by Lewis A. Grass and published by . This book was released on 1968 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt: The document covers a series of papers given at the fifth AFCRL scientific balloon symposium. The subjects were selected to cover the most recent developments in balloon technology and examples of the use of balloons for research purposes. The symposium is intended to provide an exchange of information for the developers of balloon systems and provides an excellent opportunity for scientists to discuss potential balloon capabilities and applications for the accomplishment of scientific programs. Balloon technology presentations included recent material investigations, tandem balloon stress analysis, balloon instrumentation, tethered balloons, cryoinflation feasibility studies and proposed launching techniques for large balloon systems.
Download or read book Annotated Bibliography for Scientific Ballooning written by Catherine B. Rice and published by . This book was released on 1974 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: The annotated bibliography has evolved from an informal compilation prepared in response to many requests from military and civilian researchers who were planning balloon-borne experiments and searching for data or detailed information concerning some specific aspects of modern scientific ballooning operations. The bibliography consists of three parts: a subject index, an author index, and the bibliography with annotations.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1988 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Computer Programs for Tethered balloon System Design and Performance Evaluation written by John B. Wright and published by . This book was released on 1976 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: Six computer programs were developed to provide both standardized methods for solution of typical tethered-balloon performance problems and improved techniques sufficient to study the very high altitude tethered-balloon system design problem. The programs are written for an HP-9810A desk computer but are fully documented for conversion to other types of equipment. Preliminary results are shown indicating the feasibility of a balloon tethered at an altitude of 20 km.
Download or read book High Altitude Tethered Balloon Systems Study Schedule Sub line Item 1ab written by Jerome J. Vorachek and published by . This book was released on 1967 with total page 265 pages. Available in PDF, EPUB and Kindle. Book excerpt: The report presents information which was compiled and generated for development of extremely high altitude tethered balloon systems. These data will be useful in establishing balloon systems and planning estimates. The report includes information on tether cables, balloon materials and balloon configurations. Results of analyses of superpressure natural shape balloons which are reefed as they ascend to and from float altitude are given. Aerodynamic coefficients for a natural shape balloon obtained in wind tunnel tests are also presented. An extensive set of cable and balloon parameter curves is provided for use in establishing multiple balloon systems with natural shape balloons, Class C balloons and Glastran E glass stranded cable. These curves provide cable and balloon data for intermediate altitudes between sea level, 50,000 feet and 100,000 feet. Workable cable-balloon combinations (neglecting ascent and descent conditions) for Summer I and Winter I wind conditions are defined as examples. (Author).
Download or read book U S Government Research and Development Reports Index written by and published by . This book was released on 1968 with total page 582 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book U S Government Research Development Reports written by and published by . This book was released on 1968 with total page 840 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book U S Government Research and Development Reports written by and published by . This book was released on 1968 with total page 1150 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government Reports Index written by and published by . This book was released on 1968 with total page 596 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book International Aerospace Abstracts written by and published by . This book was released on 1977 with total page 940 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government Reports Annual Index written by and published by . This book was released on 1968 with total page 1592 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government Reports Announcements written by and published by . This book was released on 1967 with total page 1070 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government Reports Announcements Index written by and published by . This book was released on 1968 with total page 1164 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bibliography of Scientific and Industrial Reports written by and published by . This book was released on 1968-10 with total page 742 pages. Available in PDF, EPUB and Kindle. Book excerpt:
