
It is going to be difficult to match
Noah and the crew at Danger Room in their coverage of the intercept of US 193 shoot down, they are doing a masterful job, but there are a few things we feel we can add to the discussion.
We are not really interested in the politics, people will complain about anything, bottom line there is no treaty violation here nor was there a treaty violation by China. China's only mistake was not to warn everyone else what they were doing, something the Bush administration has done which is what has generated the criticism in the first place. The political aspects are a waste of time, in reality this is the first thing this administration has done in regards to any space program that has caught our attention, that it is military related should surprise nobody.
From our perspective, we note the Navy specific events that are unfolding in this shoot down, starting with the plan.
The Navy has issued orders to USS Lake Erie (CG 70), USS Decatur (DDG 73), and USS Russell (DDG 59) to take out the satellite. All three ships have the AEGIS technology to fire the SM-3, and all three ships have been involved in previous AEGIS ballistic missile defense tests, with both the USS Lake Erie (CG 70) and USS Decatur (DDG 73) successfully shooting down a test target. Additionally,
USNS Observation Island (T-AGM 23) will track the satellite and collect information for the intercept, including the evaluation of the debris field. We believe the
USS Lake Erie (CG 70) will be the shooter,
Capt. Randall Hendrickson has commanded four previous AEGIS BMD tests and is the most experienced Captain in the Navy in the ballistic missile defense mission.
According to CNN, three SM-3s have been modified for the intercept.
"They want the period of a day or two to assess the effect of the first missile ... to probably get an orbit or two, to get an understanding of what effect the first intercept had on the satellite before launching another interceptor," Ham said.
While some might assume this is because the SM-3 will miss, we are thinking this might be for a second shot because one may not be enough. There is a suggestion the fuel tank with the hydrazine is the primary target. That may be true, but it seems to us the secondary target should be the
Radioisotope thermoelectric generator (RTG) that needs to be broken into smaller pieces as well to insure burn up.
Another reason we believe the Navy may take more than one shot is the details and requirements.
Jeffery Lewis describes the details.
- The intercept will occur at 240 kilometers (130 nautical miles)
- The mass of the satellite is 2,300 kg (5,000 pounds)
- The mass of the interceptor is 20 kg. (From CBO)
- The closing velocity will be 9.8 km/s (22,000 mph), suggesting a virtually head-on collision.

The satellite is about the size of a greyhound bus. The SM-3 KEI warhead unleashes about the same kinetic force of a 10 ton truck hitting a wall at 600 mph. While it is possible one shot will work, it is also more than possible the first hit will shred everything on the satellite except for the hardened hydrazine tank and
Radioisotope thermoelectric generator (RTG), or more likely knock out one or the other, which will force a second shot.
The SM-3 is designed to bring down ballistic missiles with the desire to prevent accuracy of weapons of war, but we note SM-3 tests in the past have not completely shredded ballistic missiles, instead shattering the intercepted portion of the missile leaving some large pieces to be thrown harmlessly into the ocean. It is a very effective system for that type of interception, but for the purposes of shattering a large satellite into tiny pieces, we aren't so sure.
It has been suggested this will become a new capability of AEGIS. Maybe, but not for a long time. AEGIS BMD is largely misunderstood, or not understood, so many assumptions made by the press and even ballistics observers is done in ignorance or with speculation. They Navy currently operates 17 cruisers and destroyers with AEGIS ballistic missile defense, but only 3 cruisers and 6 destroyers can actually shoot down a ballistic missile, with the rest only capable of tracking targets.
For AEGIS BMD accuracy, more than one ship is required, what is sometimes referred to as a tracker and a shooter. They share information to confirm tracking data, and the design is such that either ship can be the terminal intercept guidance platform, but to be accurate multiple tracking systems are required. The choice of three ships is not unexpected, this allows for multiple trackers.
The 9 ships able to conduct intercept operate what is known as the 3.6 version of AEGIS ballistic missile defense. They are USS Lake Erie (CG 70), USS Shiloh (CG 67), USS Port Royal (CG 73), USS Decatur (DDG 73) , USS Stethem (DDG 63), USS Russell (DDG 59), USS John S. McCain (DDG 56), and USS Curtis Wilbur (DDG 54). The rest of the AEGIS ships converted to AEGIS ballistic missile defense use what is known as Long Range Surveillance & Tracking (LRS&T), also known as AEGIS BMD 3.0. As of today there are 17 total AEGIS ships converted to either version 3.6 or 3.0, but
we only know the identity of 16.
The problem with version 3.0 is that ballistic missile defense is a toggle, a ship can either conduct normal AEGIS defense roles against conventional missiles, or ballistic missile defense, not both at the same time. The attack on the
HMS Sheffield (D80) is a case study in why either/or capabilities are dangerous.
The SM-3 Block IA was thought to only have a range of over 500 kilometers and max altitude of 160 kilometers, but the details of this intercept describe the intercept to take place at an altitude of 240 kilometers. This is a previously undisclosed detail of the SM-3 Block IA, Using the data collected by Jeffery Lewis, one can imply that the actual maximum altitude is much higher.

Finally, we want to highlight that AEGIS BMD isn't the only capability that could shoot down this satellite, there were several options, so the reason the Navy was chosen should be highlighted. Quite honestly, it is the only system that works as advertised. This blog will not hide the fact we believe the Missile Defense Agency needs to be imploded, we are anything but impressed with what has been produced to date. When it comes to missile defense it has been a wasteful spending juggernaut, but has spent hardly any of its budget investing in AEGIS ballistic missile defense, instead paying extraordinary amounts of money for 'reach for the moon' capabilities that have continuously been over budget with a lack of justified results for the cost.
Between FY1995 and FY2007, the Missile Defense Agency had invested a total of $7,012,400,000 in AEGIS ballistic missile defense, an average of a around $585M per year. Compared to the total MDA budget, this is an incredibly small annual percentage. Between FY08-FY13 the MDA intends to spend about 7%, around $6.5B of its estimate $51B total budget on AEGIS ballistic missile defense. AEGIS ballistic missile defense has long been the red-headed step child of the Missile Defense Agency budget, and yet in the door walks this scenario, and the MDA is calling on the Navy to carry the water for them and produce a success story, so they can get more money from Congress for other missile defense programs.
I hope someone in the media picks up on that fact, it is a big part of this story that needs to be told.
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