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To: BeauBo

Yes but that is not the rods from god concept, which says you can take a fairly simple tungsten rod with a guidance system and let gravity do the work.

Now its a spaced base missile, Much more expensive, just as predictable and detectable from a defensive stance (you can see where it is and know when you are vulnerable from the orbit physics), still susceptible to being shot down, disabled, or just plain aging out (cheap satellite systems don’t live long in the space environment, and the expensive ones have failures as well. Basically space is still hard.)

This is why there is so much focus on hypersonics. You keep the system on the ground where it can be maintained until needed, and you are anywhere on the planet in 20 minutes (or so they say, as I don’t really work on hypersonics).


147 posted on 09/17/2019 2:35:51 PM PDT by Magnum44 (My comprehensive terrorism plan: Hunt them down and kill them.)
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To: Magnum44
I guess a difference between people parachuting and rods from God, would be initial height/initial speed - and therefore the momentum built up before hitting the drag of the atmosphere.

From Geosynchronous orbit, an object would accelerate for 22,000 miles, and decelerate for about 15 when the air thickened. If it was initially fired from a rail gun, or travelling rapidly relative to the surface of the Earth in a high but not geosynchronous orbit, that could give it a few thousand miles per hour head start as well.

Apparently some meteorites that get through the atmosphere, can impact the surface at over 40,000 mph, like the estimation of the one that hit Gosses Bluff, Northern Territory, Australia:


153 posted on 09/17/2019 3:08:36 PM PDT by BeauBo
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To: Magnum44

Thanks for the interesting discussion.


160 posted on 09/17/2019 6:09:49 PM PDT by BeauBo
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