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BigBearJohn

(11,410 posts)
Wed Feb 14, 2018, 07:14 AM Feb 2018

The Air Force's 'rods from god' could hit with the force of a nuclear weapon with no fallout

The 107-country Outer Space Treaty signed in 1967 prohibits nuclear, biological, or chemical weapons from being placed in or used from Earth's orbit. What they didn't count on was the US Air Force's most simple weapon ever: a tungsten rod that could hit a city with the explosive power of an intercontinental ballistic missile.

During the Vietnam War, the US used what it called "Lazy Dog" bombs. These were simply solid steel pieces, less than 2 inches long, fitted with fins. There was no explosive — they were simply dropped by the hundreds from planes flying above Vietnam.

Lazy Dog projectiles (aka "kinetic bombardment&quot could reach speeds of up to 500 mph as they fell to the ground and could penetrate 9 inches of concrete after being dropped from as little as 3,000 feet. The idea is like shooting bullets at a target, except instead of losing velocity as it travels, the projectile is gaining velocity and energy that will be expended on impact. They were shotgunning a large swath of jungle, raining bullet-size death at high speeds.

Instead of hundreds of small projectiles from a few thousand feet, Thor used a large projectile from a few thousand miles above the Earth. The "rods from god" idea was a bundle of telephone-pole-size (20 feet long, 1 foot in diameter) tungsten rods, dropped from orbit, reaching a speed of up to 10 times the speed of sound.

The rod itself would penetrate hundreds of feet into the Earth, destroying any potential hardened bunkers or secret underground sites. More than that, when the rod hits, the explosion would be on par with the magnitude of a ground-penetrating nuclear weapon— but with no fallout.

SOURCE: http://www.businessinsider.com/air-force-rods-from-god-kinetic-weapon-hit-with-nuclear-weapon-force-2017-9

22 replies = new reply since forum marked as read
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The Air Force's 'rods from god' could hit with the force of a nuclear weapon with no fallout (Original Post) BigBearJohn Feb 2018 OP
Thor's hammer Fullduplexxx Feb 2018 #1
Interesting article, a replay from years past... SWBTATTReg Feb 2018 #2
But if its just a "tungsten rod", how would you control where it hits? 7962 Feb 2018 #3
Control fins RainCaster Feb 2018 #5
That's the biggest problem, I guess. DetlefK Feb 2018 #8
Wouldn't They Burn Up As They Entered Earth's Atmosphere.... global1 Feb 2018 #4
That's why they chose tungsten: It has the highest melting-point. DetlefK Feb 2018 #10
Also, Has The Highest Density. . . ProfessorGAC Feb 2018 #11
A bundle of tungsten poles 20 feet long and 1 foot in diameter? panader0 Feb 2018 #13
Not To Mention, Getting Them Up There 3,000 Miles ProfessorGAC Feb 2018 #17
Platinum and osmium are in the 20s. Dave Starsky Feb 2018 #15
Thanks Dave ProfessorGAC Feb 2018 #16
I had to Wikipedia it. Dave Starsky Feb 2018 #19
I Remember Having An Engineer. . . ProfessorGAC Feb 2018 #21
Rods from God? There's a KPN Feb 2018 #6
Fitting of the military mentality though... nt HopeAgain Feb 2018 #12
Sodom busters Cartoonist Feb 2018 #14
Shape, size and material RainCaster Feb 2018 #7
Classic Science Fiction lapfog_1 Feb 2018 #9
My immediate thought exactly. Throw rocks at earth. :) Hortensis Feb 2018 #18
I read that book recently NewJeffCT Feb 2018 #20
and the best part, the very best part... Javaman Feb 2018 #22

SWBTATTReg

(22,129 posts)
2. Interesting article, a replay from years past...
Wed Feb 14, 2018, 07:17 AM
Feb 2018

I had seen this somewhere before, called perhaps 'Vulcan'? This was proposed as a tank-killing countermeasure in Europe if need be. Years and years ago.

 

7962

(11,841 posts)
3. But if its just a "tungsten rod", how would you control where it hits?
Wed Feb 14, 2018, 07:19 AM
Feb 2018

Sounds like a bunker buster for sure.

RainCaster

(10,879 posts)
5. Control fins
Wed Feb 14, 2018, 07:26 AM
Feb 2018

Kinetic weapons are an amazing thing, if you have any interest in physics, they are very cool.

DetlefK

(16,423 posts)
8. That's the biggest problem, I guess.
Wed Feb 14, 2018, 07:29 AM
Feb 2018

Maybe they would attach moving fins to the rear-end, to steer it.

ProfessorGAC

(65,054 posts)
11. Also, Has The Highest Density. . .
Wed Feb 14, 2018, 08:28 AM
Feb 2018

. . .of any naturally occurring element. Around 18 g/mL. That's about 2.25x that of stainless steel and around 3x that of aluminum.

That makes them really heavy but with minimal volume, so the surface area to mass ratio is suited for this application too.

All that said, seems like it would be REALLY expensive.

panader0

(25,816 posts)
13. A bundle of tungsten poles 20 feet long and 1 foot in diameter?
Wed Feb 14, 2018, 08:40 AM
Feb 2018

That's a lot of tungsten, a rare metal.

ProfessorGAC

(65,054 posts)
17. Not To Mention, Getting Them Up There 3,000 Miles
Wed Feb 14, 2018, 09:13 AM
Feb 2018

They wouldn't put one up there. Can you imagine the number of rockets that would be needed to put a bunch of those into orbit?

ProfessorGAC

(65,054 posts)
16. Thanks Dave
Wed Feb 14, 2018, 09:12 AM
Feb 2018

I must have missed that on the table. I didn't see anything higher than 18. Careless reading on my part.

Dave Starsky

(5,914 posts)
19. I had to Wikipedia it.
Wed Feb 14, 2018, 09:17 AM
Feb 2018

Because I was convinced that uranium was the most dense. So we both learned something this morning!

ProfessorGAC

(65,054 posts)
21. I Remember Having An Engineer. . .
Wed Feb 14, 2018, 09:22 AM
Feb 2018

. . .look into getting tungsten milled into rotameter floats back in the 90's because you could put that, stainless and tantalum floats in and get three very different, accurate ranges on a multiplex reactor system.

We never did it because the floats were really expensive and we would have needed about 700 of them across the network.

We oversized the tubes and used aluminum, 316SS and tantalum. Tantalum was pretty expensive too.

RainCaster

(10,879 posts)
7. Shape, size and material
Wed Feb 14, 2018, 07:28 AM
Feb 2018

Because they are small in diameter, long in shape and made of very high temperature materials they will survive. Not 100% intact but certainly enough to do the job.

lapfog_1

(29,205 posts)
9. Classic Science Fiction
Wed Feb 14, 2018, 07:30 AM
Feb 2018

"The Moon is a Harsh Mistress" by Robert Heinlein

https://en.wikipedia.org/wiki/The_Moon_Is_a_Harsh_Mistress

published in 1966.

A Lunar colony wages war on earth by using a "rail gun" launching system to send moon rocks (big ones) wrapped in a minor amount of metal (for the rail gun) and send them via gravity well to targeted locations on earth.

The hard science part of this novel was pretty solid.

NewJeffCT

(56,828 posts)
20. I read that book recently
Wed Feb 14, 2018, 09:17 AM
Feb 2018

and that was my first thought when I read the article. Science Fiction come to life

Javaman

(62,530 posts)
22. and the best part, the very best part...
Wed Feb 14, 2018, 11:32 AM
Feb 2018

is that nation on the receiving end of this won't know that's its NOT a nuke and will launch a nuke in reply. YAY!

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