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History of the Delta Launch Vehicle



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(What about Delta IV?)

05-Jul-07 | Dawn delayed by 24 hours

The launch of Dawn has been postponed until Sunday, 8 July, because a lightning advisory in the Cape Canaveral area, along with an overly-high temperature reading within the fairing of the Delta II-Heavy launch vehicle, precluded the start of second stage fuelling today. Propellant loading has been pushed back to this afternoon at the earliest, and the countdown dress rehearsal will take place on Friday. With a launch window on Sunday of 4:04 to 4:33 p.m. EDT, Florida’s tendency for mid-afternoon thunderstorms comes into play, and the forecast for Sunday predicts only a 40% chance of meeting the criteria for launch. (NASA Media Advisory, 05-Jul-07)


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