|
|
Post by samchiu2000 on Jan 11, 2017 12:53:37 GMT
How much highest delta v you guy can get in a <10 million ton design?
|
|
|
|
Post by The Astronomer on Jan 11, 2017 13:04:40 GMT
Theorically, fastest ships can be achieved by using Hydrogen MPDs with extremely high power consumption plus as much fuel as you can find, using very lightweight but strong materials such as UHMWPE.
Practically, the highest delta-v I can come with is about a bit over 1000 km/s.
|
|
|
|
Post by newageofpower on Jan 11, 2017 21:49:08 GMT
How much highest delta v you guy can get in a <10 million ton design? Someone developed a Hydrogen MPD based design that exceeded 1.29% C in the Colony ship thread. |
|
|
|
Post by caiaphas on Jan 11, 2017 22:05:10 GMT
How much highest delta v you guy can get in a <10 million ton design? Someone developed a Hydrogen MPD based design that exceeded 1.29% C in the Colony ship thread. The one that required several exawatts of power? Wasn't that jasonvance's design? |
|
|
|
Post by newageofpower on Jan 11, 2017 22:20:33 GMT
Someone developed a Hydrogen MPD based design that exceeded 1.29% C in the Colony ship thread. The one that required several exawatts of power? Wasn't that jasonvance 's design? Only 27.5 TW of heat, so less than 5 TW of actual electric energy. Link here. |
|
|
|
Post by jasonvance on Jan 11, 2017 23:06:28 GMT
Someone developed a Hydrogen MPD based design that exceeded 1.29% C in the Colony ship thread. The one that required several exawatts of power? Wasn't that jasonvance 's design? The exawatt power one could reach 4-5c (completely ignoring relativity like the game does). The exhaust velocity on it was slightly over the speed of light to start with. To reach 1c you need about 400PW. I did 1.3% c with 4TW in the colony ship thread already.  |
|
|
|
Post by jasonvance on Jan 11, 2017 23:27:15 GMT
I scaled my tower of babel down to 10,000,000,000kg (10 million tons). With an RCC optimized reactor and matching radiators I could milk a bit more power out of it and go even faster but the cost will increase by a lot. I could probably do a lot better with the recent improvements to my reactors and a higher powered MPD (these are old designs). If cost is no object I could create a very high powered RCC optimized reactor/radiator set and probably get it up to ~2%c.  |
|
|
|
Post by jasonvance on Jan 12, 2017 3:30:27 GMT
If you want to add 300kt of radiators to this you can beat the other thing within the same 10 million ton limit. Placing the radiators is the most time consuming part of building these things. I had an automation script that would automatically copy paste and space them for the userdesign.txt file (which I used to build the other tower of babel). But I am getting unhanded exceptions when trying to load customized radiator placements atm and I don't really feel like delving into why and fixing it. 6000 km/s should be close-ish to the limit of velocity from 10 million tons though. The reactors require 1500 max sized radiators to operate (750 with 2 on each side) since they are 50m wide you need about 37.5km of ship length to get them all placed down. This ship is 40.2km so it has enough room (that is interestingly one of the limiting factors to building these %c ships). You could reduce that requirement with higher outlet reactors but you will lose overall mass efficiency and end up with less delta-v as a result. You could probably also improve the performance of this design with drop tanks over spacers instead of regular tanks (but cheating physics by not having any actual structural ship mass for 95% of the ship that the drop tanks and radiators are connected to seems kind of like cheating to me.  |
|
|
|
Post by samchiu2000 on Jan 12, 2017 6:43:55 GMT
Excellent~The design is great and I am quite surprised that a ship can go 2%c in coade
|
|
|
|
Post by The Astronomer on Jan 12, 2017 6:47:32 GMT
If we can come up with hotter NTRs and fusion, I believe our crazy designs can touch 0.1c.
|
|
|
|
Post by jasonvance on Jan 12, 2017 6:59:00 GMT
Excellent~The design is great and I am quite surprised that a ship can go 2%c in coade You can go a lot further than that the only limiting factors are how much your computer can put up with loading (I've been looking into what optimizations I need to work around there by testing the bounds). When I first made the radiator placement script I was trying to get to light speed but the amount of text required was megabytes (and the game was crashing as a result of trying to load that much txt). Through some optimizations (and using a less powerful MPD than the 4-5c one) I got it down further but my motivation to hit warp 1 has died down over the past few days.  I will probably pick it back up when I solve my radiator placement script problem and figure out what the actual save file size limit I have to work within is.  |
|
|
|
Post by The Astronomer on Jan 12, 2017 7:33:12 GMT
Excellent~The design is great and I am quite surprised that a ship can go 2%c in coade You can go a lot further than that the only limiting factors are how much your computer can put up with loading (I've been looking into what optimizations I need to work around there by testing the bounds). When I first made the radiator placement script I was trying to get to light speed but the amount of text required was megabytes (and the game was crashing as a result of trying to load that much txt). Through some optimizations (and using a less powerful MPD than the 4-5c one) I got it down further but my motivation to hit warp 1 has died down over the past few days. I will probably pick it back up when I solve my radiator placement script problem and figure out what the actual save file size limit I have to work within is. Holy, look at that Barnard Banger. |
|
