Request: H-1/Centaur Jr. fuel tank, avionics and fairing

[JacobB094]

Request: H-1/Centaur Jr. fuel tank, avionics and fairing

[CobaltWolf]

I believe the HOSS stage (the 1.5m hydrolox stage for Delta) is already configured as a balloon tank, balance-wise. When it was added there was a brief discussion where we decided it was sufficient for Centaur Jr. And I actually wound up using photos of an H-1 upper stage as reference. So the 1.5m cryogenic stage in BDB is kind of already a mish-mash of all 3 of these designs.

[JacobB094]

What irks me is that it doesn't look like one, what with its prominent intertank (worth noting, the original Delta K HOSS had a common bulkhead). It's also quite a bit longer than the H-1 second stage. I agree, it's not a big omission, and my current Centaur Jr. build works with that, however I'd very much like to see a shorter variant for that tank, preferably sans intertank. I don't know if it's possible with how it is UVed, but would that be possible to just "cut out" the intertank (perhaps with some length around it) and join the sections together?

Another matter is that of the fairing base and avionics. The current avionics section doesn't look like something that goes inside a fairing. In fact, BDB doesn't really have one that does, nor does it have a fairing base that would go around it. A Centaur-style top assembly for 1.5m would be handy for many other purposes, right now 1.5m upper stage options are centered around sub-diameter Delta style stages.