Additionally... Many liquid fueled rockets can abort on the launch pad after ignition, but before the clamps release. The shuttle, for instance, had 5 aborts af

Additionally... Many liquid fueled rockets can abort on the launch pad after ignition, but before the clamps release. The shuttle, for instance, had 5 aborts after main engine start (once the SRBs lit though, the shuttle was going up, one way or another).