European Sounding-rocket, Balloon and Related Research, with Emphasis on Experiments at High Latitudes PDF Download
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Author: T. Halvorsen
Publisher:
ISBN:
Category : Balloons
Languages : en
Pages : 592
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Book Description
Author: T. Halvorsen
Publisher:
ISBN:
Category : Balloons
Languages : en
Pages : 592
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Author:
Publisher:
ISBN:
Category : Balloons, Sounding
Languages : en
Pages : 602
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Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 320
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Author:
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ISBN:
Category : Nuclear energy
Languages : en
Pages : 1292
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Author:
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ISBN:
Category : Astronautics
Languages : en
Pages : 134
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Author: James F. Dwyer
Publisher:
ISBN:
Category : Balloon ascensions
Languages : en
Pages : 108
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Book Description
This paper critiques existing aerodynamic-thermodynamic models for predicting the vertical motion of free balloon systems. It demonstrates that: a) the aerodynamic drag coefficient model should be based on Froude number and fractional volume as well as Reynolds number; b) there has been a widespread error in definition of the instantaneous mass of the balloon film involved in the heat transfer process; c) the gas bubble cannot be modelled as a sphere; d) the gas bubble is asymmetrical except when near or at its natural ceiling altitude; and e) the actual gas bubble shape, and most probably the added mass, is directly related to the type of gore pattern. Finally, a procedure is proposed for the analysis of actual flight data to enable the development of a practical, but also theoretically sound, model of the aerodynamic drag coefficient of a zero-pressure, free balloon- and subsequent refinement of the heat transfer models for direct and reflected solar energy.
Author:
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Category : Power resources
Languages : en
Pages : 606
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Author:
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ISBN:
Category : Aeronautics
Languages : en
Pages : 628
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Author:
Publisher:
ISBN:
Category : Astronautics
Languages : en
Pages : 388
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Author:
Publisher:
ISBN:
Category : Nuclear energy
Languages : en
Pages : 1392
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