[wolfram74]

also: this model is 9 meters in diameter, and will already be more robust to weather effects than the f9, the 18 meter diameter model would be a beast if ever built.

[bumby]

Sorry, I didn't necessarily mean from a physical reliability perspective. I was speaking to launch/timetable reliability.

[macintux]

I’d be curious how many scrubs are technically necessary, vs precautionary.

If war is afoot you’re willing to take far more risks, with the weather and with sensor glitches.

[bumby]

I imagine there's a lot to go into it. For example, if it's a one-of-a-kind weapon with a long lead time to develop, they probably have a pretty low risk threshold.

[philistine]

Exactly, but what if you're sending dumb munitions, a couple of tanks, or relief to a disaster zone?

You could spare to blow all that during takeoff. Whatever, let's try again in four hours.

[bumby]

Launch windows generally aren't open-ended and typically only last a few hours because they are orbit-dependent. That's why when a launch is scrubbed, a window often doesn't open again until days later.

[macintux]

I doubt that matters for point-to-point deliveries like this.