ZF Navy free balloon: Difference between revisions

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* F/f - Open/close the gas valve.
* F/f - Open/close the gas valve.
* R  - Rip the envelope. Use only close to the ground and when you really really want to stay there.
* R  - Rip the envelope. Use only close to the ground and when you really really want to stay there.
{{Aerostat}}


==External links==
==External links==
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* [http://www.gasballooning.net/BT-2361.pdf Theory of Ballooning, War Department, 25 Apr, 1940]. The basics in 13 pages.
* [http://www.gasballooning.net/BT-2361.pdf Theory of Ballooning, War Department, 25 Apr, 1940]. The basics in 13 pages.
{{Aerostat}}


[[Category:Aircraft]]
[[Category:Aircraft]]
[[Category:Balloons]]
[[Category:Balloons]]
[[Category:Historical aircraft]]
[[Category:Historical aircraft]]
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