Comments by "Bruce Tucker" (@brucetucker4847) on "The Drinker Recommends... The Expanse" video.

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  49.  @robertcartier5088  By constant acceleration I meant a constant burn, accelerating halfway there then flipping and burning to decelerate for the back half of the trip like they always do in the show. The very efficient Epstein drive is capable of sustained burns of 1g for weeks if the crew can stand it (for belters that would be very stressful but not much of a problem for Martians and perfectly comfortable for Earthers). The Kuiper Belt starts about 30 AU from Earth or about 4.5 trillion meters (4.5 billion km). Plugging that into the formula d= 1/2 a t^2 where a= 9.8 m/s^2 you get a travel time of a bit under 8 days to get halfway there at a constant 1g acceleration, then another 8 days to travel the rest of the way at a constant 1g deceleration, 16 days total travel time. At its closest to Earth, Saturn is about 1.2 billion km away, plugging that into the same formula gives you a total travel time of 8 days. Dropping to 1/2 g acceleration to make the belters happy would make those travel times about 22 days and 11 days respectively. (Because the formula is t^2, halving the acceleration or doubling the distance only makes the trip 1.4 times as long.) Of course travel times to Saturn from the asteroid belt would depend on the positions of Saturn and your starting asteroid in their orbits, travel time could be anywhere from 9 to 13 days at a constant burn 1/2g. It's in the same ballpark as the travel time to the ring gate in the later books, and that doesn't seem to be much of a problem for their ships. As I've said elsewhere, the main reason they didn't go out that far very often before the gate was lack of any motivation to do so: there's not much in the way of resources out there that can't be obtained more easily in the asteroid belt or the moons of Jupiter and Saturn.
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