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The chart shows the flight plan for HyShot III and HyShot IV. Note the test of the scramjet engine doesn't begin until No. 11 and ends at No. 12 on the chart--a time of about 6 seconds.
This is not a big-budget operation. Master of philosophy student Samantha Coras inflates a weather balloon to test winds before the HyShot III launch.
A successful launch for HyShot III over the weekend. If it's any consolation to Elon Musk, whose SpaceX launch ended in failure on the same day, the first HyShot launch went out of control.