[PSUBS-MAILIST] Drop weight design

[Alec Smyth via Personal_Submersibles]

Sorry, should have clarified I was referring to Piccard not Cameron.


On Fri, Sep 16, 2016 at 2:46 PM, Alec Smyth <alecsmyth at gmail.com> wrote:

> Actually they used steel shot rather than lead, and the flow was started
> or stopped via an electromagnet. A benefit of this was that you could
> easily shed increments of weight, and another was that if you lost power,
> the sub would drop it's ballast automatically (i.e. fail-safe).
>
> Best,
>
> Alec
>
> On Fri, Sep 16, 2016 at 8:48 AM, Jens Laland via Personal_Submersibles <
> personal_submersibles at psubs.org> wrote:
>
>> Gentlemen,
>>
>> If I'm not wrong, I think the French used a whole lot of off-the-shelf
>> lead balls (as used in shotguns) in two individual pellet ballast
>> hoppers when they operated the "Trieste" back in the 50's, ref
>> https://upload.wikimedia.org/wikipedia/commons/3/31/Trieste_nh96807.svg
>>
>> Best regards,
>> Jens Laland
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>>
>
>
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