1-2G planet takeoff request

zero

Mongoose
This is just to ask if anyone has totalled out planetary take-off times for 1 or 2 G craft for the solar system.

I really would like to know how long it would take to blast-off and land with these Thrusts, as I cant find any info on it and my math is not at genius level.

This is for future ship designs I will implement for my TL 8-9 Cstars gaming -so I'm using Reaction Drives (as most know my current ship design is an inner system orbital - its shaping up nicely btw)

Also a quick question - if a ship is drifting (ie. not accelling or deccelling, just coasting) does that mean it will then be in Zero-G? (as I take it when ships accel/deccel, they have gravity equal to the used Thrust in Gs)
 
zero said:
Also a quick question - if a ship is drifting (ie. not accelling or deccelling, just coasting) does that mean it will then be in Zero-G?
Yes, a coasting ship is in "free fall", and if it does not have artificial gravi-
ty and is not spinning, the crew operates under Zero-G conditions.

As for the planetary take-off times, I think either Mega Traveller or Tra-
veller New Era (or both) has the information you are looking for, but I
do not have the books at hand.

Edit.:
I knew there was this backup CD ... 8)

From Traveller New Era, time to orbit according to planet size:

Size 0: 1G=6 m, 2 G=5 m
Size 1: 13 m / 9 m
Size 2: 19 m / 13 m
Size 3: 23 m / 16 m
Size 4: 27 m / 19 m
Size 5: 30 m / 21 m
Size 6: 33 m / 23 m
Size 7: 35 m / 25 m
Size 8: 38 m / 27 m
Size 9: 40 m / 28 m
Size A: 42 m / 30 m
 
Cool, that'll come in handy in the future and thanks for the confirmation about the 0G in coasting.

I'm pretty happy with this ship being an orbital-only ship now.
I dont need to have tons and tons of fuel for one (I currently have 5 dtons of xenon gas for the Reaction Drive's remass and 1 dton of hydrogen to power the Fusion Power-plant, thanks to the awesome power of a 12 dton T-Drive that does most of the transit and powers itself and the ship's basics as it does :D )
 
In the original LBB and a couple of other version in the 80's, they had the actual equation for accelerating half way from 1 planet to another, then decelerating at the half-way point. They also had the equation for thrust-drift-thrust(to decelerate) as well.
 
I got online calcs and written formulas in my campaign notes for that anyway. It was just Reaction Drive take-offs I needed.
 
Zero, don't forget that most Traveller ships use the Maneuver Drive, which is a gravitic drive that also included gravity plates which provide artificial gravity to the ship regardless of it's acceleration. So a ship that is coasting would still have internal gravity.

If you are using Reaction Drives, then your ship will be in Zero-G while drifting.

Just clarifying.
 
I know. I'm using Cstars atm, which only uses Reaction Drives, so maintaining an artificial gravity of some type is important as the orbital I will be using will be making accel/drift/deccel journeys.

Really this hard scifi gaming gives me a headache, I want a ship that can launch up and blast into the atmos with artificial gravity (like a Gravitic Drive with Gravity equalisers) but instead I got cruddy Reaction Drives, counting fuel tonnage spent by the minute, meaning lift-offs arent economical (heat-shielding is too expensive for my ship too) and needing a non-streamlined hull so I can get a spinhab for some semblance of Luna gravity :roll: :lol:

Ive also been reading the manga 2001 nights recently. The first volume is an awesome pretty hard scifi bunch of stories, after that it went a little fantastical though, introducing an anti-matter planet called Lucifer between the Kuiper Belt and Oort Cloud and FTL being developed from it being mined :roll:
 
MegaTraveller had an early version of the gravitic maneuver drive that only worked out to 10D, so it was fine for orbital stuff, but not for interplanetary movement. They called the technology Lifters.

You could incorporate something like that if you liked.
 
Nyeah, I'm keeping take-offs for shuttles now (which will play a big part in my games seeing as my main ship is a non-heat shielded, standard frame orbital), I got my basic orbital ship statted out, just going to put in what cheeky extras I can afford in tomorrow, so might actually post the statblock late tomorrow or Sunday :)
 
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