KitemanSA wrote:While watching the video, I could swear I heard "thrust, nominal" just before the unit jerked and started to fall.
Probably, as I suspect the clamps holding the rocket down are not released till telemetry indicates both liquid fueled engines operating normally with full thrust built up. This is different from solid boosters where it is goodby once the solid rocket is lit. This happend once with the shuttle. The main engines were started, an anomaly was detected before the solids were lit, so the launch was aborted.
Also, any verbal output probably lags at least several seconds behind what is actually happening.
To error is human... and I'm very human.