Pretty sure that's canon except for very early jump tech.
Can ships change their real space vector in Jump?
- Thread starter whartung
- Start date
Then there's the bit about bigger ships (or objects) "stepping on" the jump origin point to drag the jumping ship back to the starting point a week after departure, at any time during that week.
Justifies huge dreadnoughts. Also allows sending a 1-bit (yes/no) message across the
Baroun Tardis
SOC-12
I was unaware of that rule.
Is it in a book or a thread?
I could make use of such a thing
Although... It does imply that the jumping ship is in an indeterminate state until the Jump bubble wave function collapse
An
Jump blockage, T5.1, Book 2, p. 120.
Straight reading of text indicates that it can only happen at the moment of jump initiation. It's in an extended parenthetical, so it might have been something tweaked between 5.0 and 5.1.
Straight reading of text indicates that it can only happen at the moment of jump initiation. It's in an extended parenthetical, so it might have been something tweaked between 5.0 and 5.1.
Enoki
SOC-14 1K
I also allow any length of jump up to the maximum distance permitted by the drive. That is, you can jump in-system from say an inner planet to an outer one so long as you are out of a gravity well. In addition, I allow jumps between systems where the aim point is not the primary planet (eg., to other points using expanded systems filled out), so long as the crew has sufficient experience (2 or better skills in navigation and piloting) and more than the basic navigation program. They can do it if they want without that, but the misjump probability increases.Pretty sure that's canon except for very early jump tech.
Is there anything after '77 where this isn't canon, except for pre-standard-TL drives in T5?
Enoki
SOC-14 1K
There's nothing, if I recall, about jumping to non-standard locations having die modifiers like I use. I do that because I assume the standard stuff, and basic training / skill in this is a jump between known and documented locations, that is, the primary planet.
Baroun Tardis
SOC-12
T5.09, single file, p333:
In T5.10 it adds text of "at moment jump begins" which removes the ansible option, but does support the physics argument I made earlier that jumps are instantanious, but it takes time for the jump bubble to collapse.
mike wightman
SOC-14 10K
Jumping into empty space is allowed by canon - see A3 Twilight's Peak and The Traveller Adventure. You don't need a planetary body et al at the destination.
Baroun Tardis
SOC-12
Yep, you can navigate to empty space if you're (a) jumping the last 10% of your drive's rating or (b) your drive has a jump governor
The issue is if you're using an experimental J-3 that does not have a jump governor, and you want to go one parsec...then you need a "stopper"
Zero inertia meaning absolutely no velocity or inherited motion. Dead stop. Pops into normal space and will not go anywhere until acceleration is applied or some large object exerts gravitational influence.
Yea, that never made much sense to me. JTAS 24 suggests that commercial ships do that, but military ships do not, in terms of general practice.
But velocity is relative to ... something.
My velocity relative to the Earth is zero. My velocity relative to the Sun is 30km/s. My velocity relative to the star at Alpha Centuri is "I don't no, but unlikely zero".
You're suggesting the jump "extra magically" (since there's implied jump magic) resets your velocity to zero relative to...what? The primary?
Zero to everything. So you may have to jump ahead of the target planet and start accelerating to match course and avoid being passed or run over.
If you want to start incorporating system velocity, you’re going to need to know what direction and velocity each star system is relative to each other. So individual star system vectors plus galactic rotation in addition to the preserved vector relative to/from planets. I fail to see the play value in that.
THAT is physically and mathematically impossible.
mike wightman
SOC-14 10K
So the rest of the universe is in motion around you... the galaxy is moving away from you at 552km/s
a 1g ship will take 15 hours to catch up.
The MASS that you are 100 diameters from.
If you just so happen to be 100D from a mass.
Personally, I would prefer to place the ship in a stable orbit at 100 diameters. Your inertia is balanced to local gravity placing you in a stable orbit.
