The market for launching small satellites is presently only partly served by the Pegasus rocket, which is launched at high altitude by a commercial jet aircraft.

在小型卫星的发射这一市场，目前只有天马火箭公司提供一些服务。他们用商务喷气式飞机在高空进行发射。

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But in the United States in the 1930s and 1940s, he was no less valuable, if not so publicly celebrated, as a pioneer in American jet and rocket technology.

在20世纪三、四十年代的美国，即使他尚未如此名满天下，但作为美国喷气式飞机及火箭技术先驱，其价值却一样宝贵。

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We have a Eurofighter Typhoon jet engine plus a falcon rocket which gives us 47,000 pounds worth of thrust.

我们有台风战斗机的喷气发动机再加上一架猎鹰火箭的引擎，这使我们的这辆汽车可以冲刺47000英镑的价值。

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After turning off the jet and rocket he will deploy an air brake at 800mph, parachutes at 600mph and finally put his foot on a car-type friction brake at 250mph any faster and the brakes could explode.

ECONOMIST: The land-speed record

The key is a unique motor, the Sabre, which serves as jet engine and rocket rolled into one.

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But then ignition gets going and at full blast the jet and the rocket will each provide about half of the 210, 000 newtons (47, 000 pounds) of thrust needed to break the record.

ECONOMIST: The land-speed record