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From: Don Y <blockedofcourse@foo.invalid>
Newsgroups: sci.electronics.design
Subject: Re: OT: Repeatably lobbing "projectiles"
Date: Sat, 23 Nov 2024 18:30:58 -0700
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On 11/23/2024 6:20 PM, Don Y wrote:
> To reset the mechanism, the carriage moves to allow the electromagnet
> to reengage with the "back/innermost/moving" end of the spring, awaiting
> instruction as to how much the spring should be extended for the
> next cycle?

Actually, the same sort of catch/release could also be used in the
"compression" scenario.  One would just have to "export" a surface
(off to the side/circumference) onto which the magnetic force could be
applied.

And, in either case, additional electromagnets could be brought to
bear by creating other surfaces (keeping in mind the separation of
the EM fields) to increase the "holding ability" (and projectile
size/mass/acceleration).