US Missile Defense Test Fails

KingRobot sends news that a recent test of a US missile defense system has failed. The test of the Groundbased Midcourse Defense interceptor apparently had a problem with the sea-based X-band radar. Both the target missile, launched from the Pacific, and the interceptor, launched from California, performed as expected. "Yesterday's test was intended to quell doubters of the entire missile-defense approach, with the target missile deploying countermeasures. Critics of the GMD programme say that tests thus far, which have not included such spoilers, have been too kind to the intercept tech. The [military] isn't disclosing whether the intercepting kill vehicle had simply failed to reach the 'threat cluster' of warhead(s) and decoys, or whether it had reached the cluster but hit a countermeasure rather than the actual target."

Comments

Failed test or failed missile?

[noidentity]

Did the test fail, or the missle? The difference is that a failed test means you don't get any useful information about the device under test, whereas a successful test means that you found out whatever you wanted to know about the device under test.

Example: a test to determine whether a cellphone fails when immersed in water. If you find that your water has been shut off, you have a failed test, because you can't even try immersing the phone in water. If your water works and you immerse the phone and it stops working, the test is successful and your result is that the phone failed. If it still works, then you have a successful test and a phone that didn't fail.

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