Useful Travel Times table?

[Maccat]

Saw in the preview section from mongoose something had what looked like a reprint of CT travel times table, which is a pet peeve for me. Does (any i guess) of the mongoose stuff out (HG? Scouts? "Bk 2/3?") have a table that lists the travel times by G for standard world sizes for jump limit? 200km diameter 100km radius (size S), 1600km diameter 800km radius (size 1), etc.
So for Size 1 world, 8Mkm (10d) 80Mkm (100d) @ 1G, 2G etc.
Something like that is extremely useful one would think, no? Actually, it should have one-way direct accel without stopping for that matter as well!
And Gas giants too!!! (Small GG 20-60km rd, Large GG 60-120km rd.)

 

[Kilgs]

There is no such table in any of the books as I recall. I could run the numbers through Astrosynthesis but I think it has the decel worked into it.

 

[far-trader]

A handy net tool

http://eaglestone.pocketempires.com/scripts/uwptools.html

You have to hunt up your own distances though, if you haven't got the table from (CT) The Traveller Book or something similar.

It does standard trips (start at zero flip at midpoint and decelerate to zero).

If you want full burn to destination, just double the distance and take half the time.

The thing will break down for extreme ranges, where you start to get fractional c velocities, of course. But it works fine for 100d and typical in system trips I think.

 

[Maccat]

made a table, posted in the file section charts and forms:

http://www.travellerrpg.com/CotI/Discuss/attachment.php?attachmentid=374&d=1239319626

Always wanted something like this! now to work on the 10d one, and direct burn rather than w/ turnaround decel.

 

[Psion]

There is no such table in any of the books as I recall.

There is such a table on page 145 of the Main Rulebook.

Has a list of round distances on the left (1000 km, 10000 km, 100,000 km, etc.) with some benchmarks of standard distances (400,000 km -> surface to moon, 600,000,000 -> close gas giant, etc.)

 

[Kilgs]

I think he wanted a table that listed:

Planet Size (UWP)---100D limit---Time to reach at X g's

 

[Psion]

I think he wanted a table that listed:

Planet Size (UWP)---100D limit---Time to reach at X g's

I remember an old table having that by planet rating. But that said, is the math that hard? Multiply dia x 100 and look it up on the table.

 

[far-trader]

...
Always wanted something like this! now to work on the 10d one, and direct burn rather than w/ turnaround decel.

Yep, the 10d direct full burn one will be handy for those panicky run away and jump asasp* scenarios

* as soon as sanely possible

A few more distance/time entries you might find handy (from the CT Traveller Book table). All times are for arriving with zero velocity.

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Typical time to world orbit:

1G=2000seconds
2G=1414seconds
3G=1155seconds
4G=1000seconds
5G=894seconds
6G=816seconds

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The below presumably apply from the main world in the habitable zone:

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Typical distance to close* neighbour world (45 million km):

1G=33.7hours
2G=26.4hours
3G=21.5hours
4G=18.6hours
5G=16.7hours
6G=15.2hours

* I generally figure any inner world (inside the typical gas giant orbits) on the same side of the star as the mainworld.

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Typical distance to far* neighbour world (255 million km):

1G=88.7hours
2G=62.7hours
3G=51.2hours
4G=44.4hours
5G=39.7hours
6G=36.2hours

* I generally figure any inner world (inside the typical gas giant orbits) on the opposite side of the star as the mainworld (see close neighbour world above).

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Typical distance to close* gas giant (600 million km):

1G=136.1hours
2G=96.2hours
3G=78.6hours
4G=68.0hours
5G=60.9hours
6G=55.6hours

* I generally figure any gas giant on the same side of the star of the mainworld (see far gas giant below).

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Typical distance to far* gas giant (900 million km):

1G=166.7hours
2G=117.9hours
3G=96.2hours
4G=83.4hours
5G=74.5hours
6G=68.0hours

* I generally figure gas giant on the opposite side of the star of the mainworld (see close gas giant above).

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Quick and dirty method to figure position of other worlds and gas giants relative to Mainworld, roll 1D6 for each and use the hex sides with the star at the center if you want to map it. Same side of the star is within 1 digit on the die (i.e. Mainworld at 4 would be on the same side of the star of a roll of 3, 4, or 5). Opposite side of the star is in excess of 1 digit on the die (i.e. Mainworld at 4 would be on the opposite side of the star of a roll of 1, 2, or 6).

Save your plots in case the players return or want to go off to another world in the system. If they return later you can just update based on orbital periods. Or don't sweat it and just use the same map if the return is soon, or roll random again if it's been a while, and hope they don't notice

Of course, how often do the players make the normal space runs between worlds and gas giants in any systems. Almost never right. So the random works fine for that one time they may do it.