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English: A blimp, or non-rigid airship, is a floating airship without an internal supporting framework, or a keel. A non-rigid airship differs from a semi-rigid airship and a rigid airship (e.g., a Zeppelin) in that it does not have any rigid structure, neither a complete framework nor a partial keel, to help the airbag maintain its shape. Rather, these aircraft rely on both a higher pressure of the lifting gas (usually helium, rather than hydrogen ) inside the envelope and the strength of the envelope itself. The part underneath is called the buckle.
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Media in category "Blimps"
The following 11 files are in this category, out of 11 total.