The "C" - Launch Technique for High-altitude Balloons

The

Author: Francis X. Doherty

Publisher:

Published: 1967

Total Pages: 20

ISBN-13:

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During the period from 1961 through 1965, the Air Force Cambridge Research Laboratories developed the technique for launching high altitude plastic balloons directly from the manufacturer's shipping crate. This technique was primarily designed to facilitate the handling, inflation, and launch of large balloons from small ships at sea. The paper describes the new launch procedure and the specialized equipment designed to support it. (Author).

The "C"-Launch Technique for High-Altitude Balloons (Classic Reprint)

The

Author: Francis X. Doherty

Publisher: Forgotten Books

Published: 2018-02-10

Total Pages: 32

ISBN-13: 9780656287109

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Excerpt from The "C"-Launch Technique for High-Altitude Balloons A ship at sea provides an ideal launch platform for large high altitude plastic balloons. By running with the wind a ship can create a highly desirable zero wind condition during the critical stages of balloon inflation and launch. This advantage has led to a history of balloon launches conducted at sea. As balloons and balloon payloads increased in size, however, the problem of obtaining an ap propriate launch vessel became more acute. Such a vessel required the speed and maneuverability necessary to negate wind effects, a relatively large deck area to support conventional launch techniques, and an adequate storage area for the lifting gas, flight system hardware, and balloon launch equipment. These re quirements limited ship selection to aircraft carriers, which were costly and of limited availability. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

The "C" - Launch Technique for High-altitude Balloons

The

Author: Francis X. Doherty

Publisher:

Published: 1967

Total Pages: 0

ISBN-13:

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During the period from 1961 through 1965, the Air Force Cambridge Research Laboratories developed the technique for launching high altitude plastic balloons directly from the manufacturer's shipping crate. This technique was primarily designed to facilitate the handling, inflation, and launch of large balloons from small ships at sea. The paper describes the new launch procedure and the specialized equipment designed to support it. (Author)

The C-Launch Technique for High-Altitudes Balloons

The C-Launch Technique for High-Altitudes Balloons PDF

Author: Inc Thomas a. Edison

Publisher: Palala Press

Published: 2018-02-18

Total Pages: 34

ISBN-13: 9781377977737

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This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.

An Investigation of Techniques for Launching Large Balloon Systems from Aircraft Or Rockets in Flight

An Investigation of Techniques for Launching Large Balloon Systems from Aircraft Or Rockets in Flight PDF

Author: Andrew S. Carten (Jr.)

Publisher:

Published: 1973

Total Pages: 96

ISBN-13:

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The requirements for placing a military payload (communications relay, electro-optical sensor, etc.) in the sky at short notice are identified. A demonstration aircraft-launched balloon system is proposed and the basic assumptions defined. The balloon size and mass of inflatant to be carried aloft are calculated. Compressed gas and cryogenic storage systems are compared. The weight of storage tank/lift ratio is used to demonstrate the superiority of cryogenic storage. The properties of liquid helium and liquid hydrogen are discussed with respect to safe long term storage. The heat needed to vaporize the cryogens and to warm the resultant inflation gases is calculated. Methods of generating and transferring the required heat at the time of inflation are described. (Modified author abstract).

Gas Replenishment Techniques for Use in High-altitude, Long-duration Scientific Balloon Flights

Gas Replenishment Techniques for Use in High-altitude, Long-duration Scientific Balloon Flights PDF

Author: Andrew S. Carten (Jr.)

Publisher:

Published: 1979

Total Pages: 80

ISBN-13:

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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).