Download or read book Proceedings supplement Eighth AFCRL Scientific Balloon Symposium 30 September to 3 October 1974 written by Andrew S. Carten (Jr.) and published by . This book was released on 1974 with total page 308 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 1982 with total page 1282 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 Instrumentation Papers written by and published by . This book was released on 1979 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Gas Replenishment Techniques for Use in High altitude Long duration Scientific Balloon Flights written by Andrew S. Carten (Jr.) and published by . This book was released on 1979 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report covers the theoretical advantages and practical ramifications of a proposed new technique for compensating for the daily loss of lift (gamma) experienced by long-duration high-altitude scientific balloon flights. This technique, 'Gas Replenishment', would transfer stored helium from an onboard dewar to the balloon, to replace gas lost due to temperature excursions. It would be a direct substitute for systems presently in use which drop ballast, that is, reduce system gross weight, to compensate for loss of lift. (With gas replenishment, lift is restored directly, with only a small change in system gross weight. A short summary of zero-pressure balloon flight theory is given at the start, to lead into the explanation of conventional ballast practices and computations. The ballast equations are then modified to apply to the gas replenishment technique. Calculations for typical constant-gamma flights are summarized for each method of loss compensation and the clear superiority of gas replenishment is demonstrated in the areas of gross system weight of launch, usable payload weight and anticipated flight duration. Basic equations are then developed for a more complicated model of the gas replenishment system in which the value of gamma varies from day to day. Computations using these formulas are summarized in tabular form. The final section of the report is given over to the design problems associated with the type of dewar and heat exchange equipment needed to implement the gas replenishment concept. (Author).
Download or read book Proceedings Tenth AFGL Scientific Balloon Symposium 21 August to 23 August 1978 written by Catherine L. Rice and published by . This book was released on 1979 with total page 546 pages. Available in PDF, EPUB and Kindle. Book excerpt: This publication contains the Keynote Address and twenty-nine papers presented at the Tenth AFGL Scientific Balloon Symposium, 21-23 August 1978, at Portsmouth, NH. The five sessions were entitled: Balloon Technology - Progress and Problems; Manned Flights; Stratospheric Measurements; Airship Design Concepts; and Methods and Models.
Download or read book OAR Cumulative Index of Research Results written by and published by . This book was released on 1967 with total page 1264 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings Ninth AFGL Scientific Balloon Symposium 20 October to 22 October 1976 written by George F. Nolan and published by . This book was released on 1976 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt: This publication contains papers presented at the Ninth AFGL Scientific Balloon Symposium, 20 October to 22 October 1976, held at Wentworth By-The-Sea, Portsmouth, New Hampshire.
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 OAR Index of Research Results written by United States. Air Force. Office of Aerospace Research and published by . This book was released on 1967 with total page 1262 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings Tenth AFGL Scientific Balloon Symposium 21 August to 23 August 1978 written by Catherine L. Rice and published by . This book was released on 1979 with total page 548 pages. Available in PDF, EPUB and Kindle. Book excerpt: This publication contains the Keynote Address and twenty-nine papers presented at the Tenth AFGL Scientific Balloon Symposium, 21-23 August 1978, at Portsmouth, NH. The five sessions were entitled: Balloon Technology - Progress and Problems; Manned Flights; Stratospheric Measurements; Airship Design Concepts; and Methods and Models.
Download or read book Proceedings Seventh AFCRL Scientific Balloon Symposium written by George F. Nolan and published by . This book was released on 1973 with total page 514 pages. Available in PDF, EPUB and Kindle. Book excerpt: The report contains the papers presented at the Seventh AFCRL Scientific Balloon Symposium held in September 1972. The papers were presented in three sessions: Tethered and powered balloons, balloon-borne experiments, and instrumentation and balloon technology. In the area of tethered balloons, papers were presented on cables, drag and stability characteristics, hull design and analysis, and the results of scientific experiments using tethered balloons as sensor platforms. Papers were presented on a powered spherical balloon and a survey of possible power sources for use by this system. Presentations during the balloon-borne experiments and instrumentation session included manned balloon flights, precision pointing and control platforms and instrumentation, recovery parachute performance, gondola motion analyses, a balloon radar altimeter, and an overview of French scientific ballooning activities. During the balloon technology session a review was made of the flight results and performance of balloons with volumes in excess of 20 million cubic feet, shape and stress analysis of both nonreinforced and reinforced materials, and fabric tinting to increase solar absorptivity.
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 Index written by and published by . This book was released on 1968 with total page 476 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 1968-04 with total page 1042 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 864 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 828 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 1968 with total page 1100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
