FUEL CELL EXHAUST INERTING FOR AIRSHIPS
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United States of America
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Issued Date -
Mar 6, 2025
app pub date -
Aug 29, 2023
filing date -
Aug 29, 2023
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Abstract
A lighter-than-air craft includes an envelope defining an interior region. A lifting gas at least partially including hydrogen is located within the interior region. The lifting gas provides buoyancy for the lighter-than-air craft. A hydrogen fuel cell is fluidically coupled with the interior region. An inerting gas is located within the envelope, and the inerting gas at least partially includes exhaust from the hydrogen fuel cell. The inerting gas and the lifting gas have respective volumes such that a mixture thereof is nonflammable during operating conditions for the lighter-than-air craft. The hydrogen fuel cell is able to utilize the hydrogen of the lifting gas to generate electricity. A propulsion system is coupled to the envelope and is able to provide propulsion for the lighter-than-air craft.
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