Post by Alan Baker Post by News Post by Alan Baker Post by Geoff May
I watched on both days. I had never seen a SpaceX launch, so I was
surprised just how quickley the rocket lifted off the pad once the
I think people became accustomed to the delay that they saw in a
Shuttle launch caused by the main engines being fired up before the
solid rocket boosters fired.
Or the higher thrust but lower thrust to weight ratio of a max payload
Saturn V at launch.
That too. Also the greater size of the Saturn V makes it speed and
acceleration appear to be less.
Not appearances alone, the heavier Saturn V accelerated much slower out
of the blocks, upper stage only increasing to orbital velocity as it
burned through 6.5 million pounds of RP1 and LH2 propellants and LOX
To illustrate the first stage differences, Saturn V reached Max Q at 95
seconds and 14km altitude, while the Falcon 9 Dragon reached Max Q at 58
seconds at 12.7km altitude.