"We did our fuel efficiency test and a bunch of other tests on that car," Fisher says.

“我们对那辆车进行了燃油效率测试以及一系列的其他测试，”费希尔说。

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It was the fourth test of the weapon, which can carry conventional or nuclear payloads of 1.5 tons and USES solid fuel.

这是该武器的第四次试射，它可以携带1.5吨常规或核的有效载荷，并使用固体燃料。

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The longest previous hypersonic scramjet flight test, performed by a NASA X-43 in 2004, was faster, but lasted only about 10 seconds and used less logistically supportable hydrogen fuel.

先前最长的冲压式喷气发动机下极超音速飞行测试，是在2004年由NASA的X-43进行的，速度更快，但只持续了10s。

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One telling sign could be the nature of the fuel used in the test, though that is not yet clear.

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The CR test car got about 30 mpg on premium fuel, and about 27 mpg on high-test when the engine was running.

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The company provides contract engineering services and test equipment for fuel cell developers.

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