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.
The airship will be flighttested later in the summer and will carry a joint NASA and Old Dominion University payload that will measure moisture content in soil.
夏末,飞艇将接受飞行检验,并将携带美国宇航局和老道明大学的仪器,测量土壤湿度。
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And at the GoddardSpace Flight Center in Maryland, NASA hardware and systems engineers tested thecars' mechanical components to identify conditions that could unexpectedly openthe throttle.