Download or read book A Temperature Control Technique for Long Duration Balloons written by Winzen International, Inc and published by . This book was released on 1993 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Scientific balloon flight can be extended for indefinite periods by covering the radiative balance on the balloon structure. This is achieved by active control of an internal element specifically chosen for its absorptive and emissive properties. The element, called the "radiative Curtain", is opened, closed and oriented perpendicular ro the sun to control balloon gas temperature which in turn controls the expansion, contraction and venting of the gas to enable extended flights. The technique was shown to be feasible during phase I SBIR study, Phase II SBIR objectives are to select the optimum size, thickness, and material to the curtain; design, analyze, and test curtain deployment system; improve accuracy of gas temperature measurements and modify a zero pressure balloon to incorporate the curtain system. Winzen will design and construct test articles, plan and execute a comprehensive flight test program, and deliver final test article to National Scientific Balloon Facility. Expected results will confirm that a radiative curtain will control lifting gas temperature to a degree that will significantly reduce or eliminate diurnal temperature changes, thus reduce or eliminate need for ballast, resulting in significantly longer mission duration. Additionally, the Acoustic Thermometer will be developed as a means for accurate and direct measurement of balloon gas temperature.
Download or read book Gas Temperature Control for Long Duration Balloons written by Thomas M. Lew and published by . This book was released on 1994 with total page 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 Stratospheric Balloons written by Manfred “Dutch” von Ehrenfried and published by Springer Nature. This book was released on 2021-03-04 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt: Stratospheric balloons are powerful tools used to study the Earth and its atmosphere, as well as the greater cosmos beyond. This book describes the science and technology behind modern stratospheric ballooning, along with the surprising ways it has impacted our daily lives. The book takes you through every step of the process, starting with an in-depth introduction to basic balloon types and their uses before delving into balloon construction and mission planning. Along the way, you will learn about the novel technologies that have radically changed these balloons and their ability to launch, control and navigate them over specific ground targets. Next follows an exploration of their incredible applications, including research in atmospheric science, cosmology and astronomy, earth studies, meteorology, and aerobiology, and also commercial capabilities such as Internet networks and high-altitude tourism. The community of scientists, engineers, and entrepreneurs involved in stratospheric ballooning is only ever growing. This book shows you how these national and international efforts have truly soared in recent years, and it will be an enjoyable read for anybody interested in learning more about how science and commerce are conducted in the stratosphere, at the edge of space.
Download or read book Scientific Ballooning written by COSPAR. Panel on Technical Problems Related to Scientific Ballooning. PSB Meeting and published by Elsevier Science & Technology. This book was released on 1995 with total page 140 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 1995 with total page 994 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Experimental Investigation of Three Balloon type Enclosures for Thermal Control of Satellites written by George E. Sweet and published by . This book was released on 1971 with total page 52 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 1997 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Construction Review written by and published by . This book was released on 1964 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: Issues for 1955 accompanied by supplement: Construction volume and costs, 1915-1954.
Download or read book Large Space Telescope written by and published by . This book was released on 1974 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NASA SP written by and published by . This book was released on 1992 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Physics Briefs written by and published by . This book was released on 1993 with total page 1288 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Technology for Large Space Systems written by and published by . This book was released on 1985 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Next Generation in Scientific Ballooning written by W. V. Jones and published by . This book was released on 2004 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Aeronautical Engineering written by and published by . This book was released on 1993 with total page 712 pages. Available in PDF, EPUB and Kindle. Book excerpt: A selection of annotated references to unclassified reports and journal articles that were introduced into the NASA scientific and technical information system and announced in Scientific and technical aerospace reports (STAR) and International aerospace abstracts (IAA)
Download or read book Scientific Ballooning written by and published by . This book was released on 1961 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scientific Ballooning V written by COSPAR. Plenary Meeting and published by . This book was released on 1987 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
