Japanese Engine Not AEHF Issue: USAF Official

By Amy Butler

U.S. Air Force officials have ruled out the Japanese-made liquid apogee engine (LAE) as the culprit for the failure of the first Advanced Extremely High Frequency (AEHF) satellite to reach orbit as expected, says Erin Conaton, undersecretary of the Air Force.

The IHI model BT-4 LAE failed twice to fire during an orbit-raising attempt shortly after the satellite launched Aug. 14 ...

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