Posted on 03/28/2002 12:14:54 PM PST by Stand Watch Listen
Well, firstly, the GBU-28 can penetrate to 100 feet of earth or more (granted, it's heaver by a few thousand pounds), so there's no reason a nuke couldn't be built to the same specs. Secondly, the author was talking about a miss with a 10 kiloton device, but the the B61 family of weapons can be configured with a wide variety of yields, including 0.3, 1.5, 5, 10, 45, 60, 60, 80, 170, and 340 kilotons. What you lack in accuracy could be made up for in tonnage.
Precisely. This article speaks about a specific (an rather small and lightweight) nuke. He also complains about accuracy, and doesn't mention that the laser guided weapons are nothing more than iron bombs with a laser seeker on front and control surfaces in the back that come as a kit and are "strapped on" during bomb prep. These could be used on nukes as well.
They dropped a couple of these up here. Minus nukes. Permafrost is tough. The way they get through it for mining buried mineral deposits is to drill down using steam points or wash it away with water giants, both involving melting the ice. A bunker under permafrost might be a bad idea for other reasons, but it would be excellent against nuke warheads.
The Guided Bomb Unit-28 (GBU-28) is a special weapon developed for penetrating hardened Iraqi command centers located deep underground. The GBU-28 is a 5,000-pound laser-guided conventional munition that uses a 4,400-pound penetrating warhead. The bombs are modified Army artillery tubes, weigh 4,637 pounds, and contain 630 pounds of high explosives. They are fitted with GBU-27 LGB kits, 14.5 inches in diameter and almost 19 feet long. The operator illuminates a target with a laser designator and then the munition guides to a spot of laser energy reflected from the target.
The GBU 28 "Bunker Buster" was put together in record time to support targeting of the Iraqi hardened command bunker by adapting existing materiel. The GBU-28 was not even in the early stages of research when Kuwait was invaded. The USAF asked industry for ideas in the week after combat operations started. Work on the bomb was conducted in research laboratories including the the Air Force Research Laboratory Munitions Directorate located at Eglin AFB, Florida and the Watervliet Armory in New York. The bomb was fabricated starting on 1 February, using surplus 8-inch artillery tubes as bomb casings because of their strength and weight. The official go-ahead for the project was issued on 14 February, and explosives for the initial units were hand-loaded by laboratory personnel into a bomb body that was partially buried upright in the ground. The first two units were delivered to the USAF on 16 and 17 February, and the first flight to test the guidance software and fin configuration was conducted on 20 February. These tests were successful and the program proceeded with a contract let on 22 February. A sled test on 26 February proved that the bomb could penetrate over 20 feet of concrete, while an earlier flight test had demonstrated the bomb's ability to penetrate more than 100 feet of earth. The first two operational bombs were delivered to the theater on 27 February.
The Air Force produced a limited quantity of the GBU-28 during Operation Desert Storm to attack multi-layered, hardened underground targets. Only two of these weapons were dropped in Desert Storm, both by F-111Fs. One weapon hit its precise aimpoint, and the onboard aircraft video recorder displayed an outpouring of smoke from an entrance way approximately 6 seconds after impact. After Operation Desert Storm, the Air Force incorporated some modifications, and further tested the munition. The Fy1997 budget request contained $18.4 million to procure 161 GBU-28 hard target penetrator bombs.
For a visual depiction of how the GBU-28 works view the grapic produced by Bob Sherman and USA Today on-line.
They have built their own Roach Motel, they check in,but can not check out.
Makes you wonder who's running the asylum.
5.56mm
If that's true then why did most missile commanders in the hardened missile soli control rooms expect to die at their posts ? This author is full of crap.
>Secondly, the author was talking about a miss with a 10 kiloton device, but the the B61 family of weapons can be configured with a wide variety of yields, including 0.3, 1.5, 5, 10, 45, 60, 60, 80, 170, and 340 kilotons.
That's correct -- "Dial a Yield" -- and a strange omission.
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