| 摘要 |
An airship load frame ballast tank system has all tanks connected (6a, b) by a main pipe (5a, b), couplings (8) and remote controlled gate valves (9a, b) to a smaller trimming pipe (7a, b), main pipe (4a, b) and water pump (4) with trim tanks (3a, b) placed symmetrically between the ballast tanks. includes an Independent claim for use of the main and connection pipes to stiffen the load frame structure.
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