Theemile wrote:Without a comp, a ship with normal Grav plates is limited to short durations at 150 gs (crew will feel continuous 5 gs, and be strapped to grav couches), and 50 gs for longer duration (1 G felt by crew). So doable, just low strategic speed and ship can't use sails to travel with grav waves (the ship is perennially "tacking").
As I said, I do agree with you - just the technology limits this concept - which is why we're not seeing it - just like why we're not seeing SDs with bubble sidewalls. Building these things is an expensive proposition and has no "planned" need. IRL, something like this is rarely built because it is usually cut out of budgets - since it's a "might be useful in such cases" item instead of a "Has a required capability that addresses a current need" item, it's going to be dropped in peacetime, and in war time, other units will probably have priority.
Actualy not certain on the oblateness, - all the current fort designs are mentioned to be oblate, or the shape is not mentioned. I believe the oblateness is due to the drive ring, but that's an assumption.
Tacking is only needed when sailing "close-hauled" into the gravity wave, it is not the correct way reduce acceleration. The sail was invented in 1273 pd and the Background Section of "The Universe of Honor Harrington" in
More than Honor has this to say:
In addition, the problems of acceleration remained. The Warshawski Sail could be adjusted by decreasing the strength of the field, thus allowing a greater proportion of the grav wave's power to "leak" through it, to hold acceleration down to something a human body could tolerate, but the old bugaboo of "g forces" remained a problem for the next century or so.
Then, in 1384 pd, a physicist by the name of Shigematsu Radhakrishnan added another major breakthrough in the form of the inertial compensator.
I agree that this is a special purpose vessel, that is very much in opposition to the way that the RMN likes to do things. It only occurred to me because there was a period during war time, that Manticore went through a phase of building modular forts in various places and it bugged me that the construction was in a war zone.
We have discussed the limitations of using sails without a compensator in various threads when the Leonard Detweiler ships were brought up. The sails still generate free power, but at a much lower acceleration. But that acceleration only comes into play until the maximum velocity is reached or when slowing down; so how much "strategic speed" is affected depends on how much of the voyage is at maximum speed versus how much is spent changing velocity.
PS: Note that if tacking were the only way to reduce acceleration, then every ship would have to begin tacking once the maximum allowable velocity were reached. So it would also true for a ship with a compensator that 'the ship is perennially "tacking"'.