Abstract In this paper, considering the low cost and high effectiveness-cost ratio of near space airships, as well as the insufficiency of theoretical methods for verifying space-ground equivalents, flight control technology validation of a typical airship was considered, and a method for describing the airship motion characteristics is presented in detail. According to the similarity and π theorems, dimensional analysis of the prototype airship’s motion characteristics was completed, similarity criteria were tabulated, and the similarity index was determined. The design of the scaled parameters under the single-value constraint of “geometric similarity, kinematic similarity, and dynamical similarity” between the prototype airship and its low-altitude scaled model was performed, and a low-altitude scaled flight test platform and flight test were developed. Theoretical methods for the similarity analysis of the prototype airship and its low-altitude scaled model, as well as the basics of flight test engineering applications, were systematically introduced, describing a low-cost, repeatable low-altitude scaled flight test verification method for key technology verification of high-cost and high-risk near space airships. This study provides a foundation for follow-up studies of relevant similar theories and applications.


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    Title :

    Low-altitude scaled similarity analysis and flight tests of near space airships with pressure resistance mechanism


    Contributors:
    Shi, Zhiguang (author) / Zuo, Zongyu (author) / Dong, Ruonan (author)

    Published in:

    Advances in Space Research ; 72 , 6 ; 2324-2335


    Publication date :

    2023-06-06


    Size :

    12 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




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