Aspects of the technology relate to temperature regulation for high altitude, long duration balloons, such as balloons that operate in the stratosphere for weeks, months or longer. A balloon covering overlays the balloon envelope. The material properties and configuration of the balloon covering are selected to enable it to automatically cover or expose portions of the envelope depending on environmental conditions. The covering has multiple layers of materials with different coefficients of thermal expansion (CTE). The layers are chosen to have significantly different CTEs, and flaps are created in the envelope such that depending on the temperature, the flaps will either lie flat on the envelope or curl away from the envelope. In the former case, the flaps help to retain heat in the envelope, such as during nighttime operation. Conversely, in the latter case, the flaps permit heat to escape from the envelope, such as during daytime operation.


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    Title :

    Fashionable hats for high altitude balloons


    Contributors:

    Publication date :

    2021-04-27


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B64B LIGHTER-THAN-AIR AIRCRAFT , Luftfahrzeuge leichter als Luft / B32B LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM , Schichtkörper, d.h. aus Ebenen oder gewölbten Schichten, z.B. mit zell- oder wabenförmiger Form, aufgebaute Erzeugnisse



    Fashionable Hats For High Altitude Balloons

    BEHROOZI CYRUS / BRUNS RICHARD CHAD | European Patent Office | 2020

    Free access


    Oscillation of high-altitude balloons

    Anderson, William J. / Taback, Israel | NTRS | 1991


    Polarimetry from high-altitude balloons.

    Coyne, G. V. / Gehrels, T. | NTRS | 1967


    Oscillation of high-altitude balloons

    ANDERSON, WILLIAM J. / TABACK, ISRAEL | AIAA | 1991