I wouldn’t bet on it. The weather at the Cape isn’t looking much better than it has been for the last few nights, including Friday night, when lightning strikes on the launch site caused a scrub for Saturday night. When the Air Force and NASA were choosing launch sites in the late fifties and early sixties, the Cape was an attractive location for many reasons, but one of the negatives was the fact that Florida is pretty much the lightning capital of the nation. More people are killed by strikes here than anywhere else (it helps to have a large population, of course). But at the time, it wasn’t truly appreciated what a problem this would be. The first major lightning issue occurred on Apollo XII (next flight after the one whose fortieth anniversary we’ll be celebrating, or at least remembering over the next few days), when lightning struck the vehicle during launch, and basically dazed the avionics. The crew had the presence of mind to do a reboot, and the mission ended up being a success.
The next major event was almost twenty years later, in the spring of 1987 (not long after the Challenger loss, and the Titan IV failure at Vandenberg that caused both systems to be shut down for some time). An Atlas-Centaur carrying a Navy comsat was destroyed by lightning that caused its control system to go haywire right after launch. The current commit criteria that kept the Shuttle from launching last night, and may do so again tonight, were derived from those events. If anyone is interested in the details, there’s an interesting paper on the subject from the Aerospace Corporation.
What I found interesting is the fact that the vehicles themselves induce the lightning. I think that this speaks to the utility of a two-stage vehicle without a long rocket exhaust plume that contacts the ground providing a conductive path. This wouldn’t be a problem for an air-launched system that could ferry. And of course, such a system wouldn’t be tied to a fixed launch site, like Cape Canaveral. As we remember Apollo, people in Brevard Country should understand and be proud that while their region played a key role in space history, and may have helped win the Cold War, geography will not always be destiny.
[Update about 8 PM eastern]
Did I call it or what?
Spacelaunch Falcon 1 attempt has been put off until 10:30 EDT.