[Clioman]

And, is that a ‘transit’ using steady acceleration for 7 days — in which case you blast by Mars doing a gazillion mph — or is it 3.5 days to mid-point, at which time you do a 180 and start decelerating (presumably maintaining a constant G load throughout?)

Anybody know how long a human can function under sustained multiple g-loads?

[SampleMan]

Anybody know how long a human can function under sustained multiple g-loads?

1G appears to be sustainable for 90+ years. I think that all sustained acceleration would aim to hold 1G. I think that would provide the said velocity of 100 km/sec in less than 24 hours. Dropping that acceleration to .5G would likely provide a more comfortable trip.

A lower thrust over a longer period would seem to be better.

[JamesP81]

Anybody know how long a human can function under sustained multiple g-loads?

It wouldn't be a heavy g-load. The thruster produces 35 micronewtons. 1 micronewton is 1,000,000th of a newton. The g-load would be very low.

[Frank_Discussion]

We live under a constant 9.8 m/s/s load all the time, this thrust would be much gentler than that.