The XCOR team then developed a more powerful engine with an advanced pump-fed fuel system for a larger aircraft now being flight-tested for a commercial customer.

公司的科研小组，正在采用先进泵式喂料系统，为大型飞行器，研制动力更加强大的引擎，现在正在为商业客户的需求，进行飞行测试实验。

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XCOR Aerospace said it has already sold about 20 tickets on its 2-seater Lynx rocket ship, which has yet to make a test run.

该公司透露，虽然两人座的太空船还没进行试飞，但已售出20张票。

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XCOR is one of several companies developing suborbital vehicles for commercial space tourist flights.

XCOR是开发亚轨道飞行器、用于商业太空飞行的几家公司之一。

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If SpaceX managers are able to meet "even half of their mission goals, that would be a huge success, " according to Jeff Greason, chief executive of XCOR Aerospace, a space-transportation start-up.

WSJ: SpaceX's Pioneering Flight Plans

However XCOR Aerospace, an experimental rocket-development company based in Mojave, California, begs to differ.

ECONOMIST: Lost in space

Companies preparing for commercial suborbital passenger service include Virgin Galactic, a U.S.-based offshoot of Branson's Virgin Group of London, and XCOR Aerospace of Mojave, Calif.

MSN: Win a Free Trip to Space