Climbing during daylight hours, the prototype aircraft ultimately reached an altitude just short of 30, 000 meters, breaking records for non-rocketpowered flight.
在白天爬升，原型机最终达到海拔30000米的高度，打破了非火箭动力飞行的高度纪录。
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He says the settlement plan would start small, with a pioneering group of fewer than 10 people, who he would take there on a reusable rocketpowered by liquid oxygen and methane.
Chuck Yeager first broke the sound barrier in his rocket-powered X-1 in 1947, so it's staggering to think that just 23 years later, we stood poised to take our leisure travel supersonic as well.