"The test of Zefiro 23, the engine which will carry Vega European launcher up to 100 kilometers form Earth, lasted 71 seconds. Zefiro 23 is 7 meter and a half high, has 2 meter diameter, weighs 26 tons and starts working after 107 seconds from the launch beginning. Today’s test allowed to get important info about combustion temperature and speed, thrust profile, orientation control through electromagnetic a...