This is so cool! I'm also really excited with the Kerbal Space Program mod y'all are making!
I PM'ed Nixonshead about this but I thought I'd post the TL's artwork to a facebook discussion group I'm part of called Space Hipsters with credit to the TL authors, Nixonshead, and a link to the timeline. I think people would really get a kick out of it! I assume under the new licence that would be okay?
Creative Commons CC BY-NC-SA said:This license lets others remix, tweak, and build upon your work non-commercially, as long as they credit you and license their new creations under the identical terms.
I PM'ed Nixonshead about this but I thought I'd post the TL's artwork to a facebook discussion group I'm part of called Space Hipsters with credit to the TL authors, Nixonshead, and a link to the timeline. I think people would really get a kick out of it! I assume under the new licence that would be okay?
Have you thought about making add-ons for Orbiter Space Flight Simulator?
Roughly speaking, yes.I also have some questions I ran into while drawing up the list (which is still a WIP--Eyes is such a rich universe, there's so much stuff!).
*If a piece of equipment shares the same name as OTL, is it the same? E.g. Castor 120
The J-2S is a tap-off cycle, a variant on the gas generator cycle of the original J-2. Instead of having a separate gas generator combustion chamber, it taps combustion gasses off the main chamber. This allows the higher pressures of a GG engine with a mechanically simpler engine.*How does the J-2A-2 achieve its stated Isp? Staged combustion? Can't be expander because that has a hard limit on thrust, or at least so I understand...
To within margin of detail, yes. I directly stole GEM-46 specs when creating it.*Is the CCM46 the GEM46?
The 1970s-origin Delta 4000 uses the original RS-27, not the improved RS-27A. The Delta 5000 was supposed to use the RS-27A, but looking at the wiki it seems I didn't get that incorporated into its stats. I'll need to update that at some point.*Is the engine of the Delta 4000 the RS-27A? If so, why is the Isp lower?
LMAE, IIRC.*What engine do the new Apollos use? I *think* it was mentioned it was the LMAE, but I'm not sure.
On the other hand, the 1 and 2 haul.ferram4 said:The Europa 44u (and likely the 42u) lack the ability to liftoff without lighting the core; however, lighting the entire core results in the boosters burning out at the same time as the core, since they use the same engines and have the same fuel load relative to thrust. Which means the core needs to light half its engines. Assuming no uprating of the RZ2 for more thrust (not a good idea) or adding throttling (probably a little too advanced, I think). And I mean, down to 60% or so throttling.
The tapoff cycle is a variant of gas generator, and not an uncommon one even for hydrolox engines--others include the original LE-5, the European HM-7B and Vulcain. It lets you get pretty darn close to the efficiency of an expander cycle, while having higher thrust. Staged combustion is a bit better yet, and really shines in SSME/LE-7 applications where an engine is firing for a substantial portion of a flight to orbit. There, you often see ISp (vac) of around 450 only because the nozzle must be seal-level optimized for liftoff thrust, otherwise they'd do better yet.Great, thanks!
On the J-2, I guess I was just surprised to see RL-10A3-level performance from something that wasn't expander or closed cycle.
Seems workable. As I said, they're identical to the limit of detail--I won't say that the welds or whatever are all the same, but I used the OTL GEM 46 as the specs base for the CCM 46 and they have the same rough dimensions and properties.On the CCM46: I ask because KW Rocketry has a decent GEM60, IIRC, that we might tweak.
They're based off a French solid of OTL--I can't recall the name offhand, and forgot to add it to the wiki. I'd need to dig through my PMs, or Michel Van can add it if he sees this--it was his suggestion.Speaking of solids: are the Europa 2-TA solids based off anything real? (ferram's making the Europas out of procedural parts and we wondered about the solids' stats.)
Great, thanks!
Speaking of solids: are the Europa 2-TA solids based off anything real? (ferram's making the Europas out of procedural parts and we wondered about the solids' stats.) And on the Europa note, he points out:
Thanks, Michel. I always get confused because it's unrelated to the Diamant rocket itself. Astronautix stats.the P16 aka "Black Diamant" is base on real hardware, the P16/902 - first stage of the French MRBM "Missile S2"
Thanks, Michel. I always get confused because it's unrelated to the Diamant rocket itself. Astronautix stats.