1982
From a Cabin to a Castle, Comrades
Ever since the launch of the American Skylab space station in 1973, just a few years after the decision to suspend its own space station programs, the USSR had been in a willing state of conservative space activity. While many of the nation's civilian oriented scientific goals had also been suspended in tandem, the Soviet military would still require numerous flights to accomplish its aims, and for the SSSR itself there was also the simple need to maintain an experienced cohort of cosmonauts. Limited by the internal volumes of their sole manned spacecraft Soyuz, and the limited payload of the Soyuz rocket itself, and indeed, the limited budget being allocated to Soyuz in light of the MKS/RLA project, this left designers in a precarious position of having to find as many ways as possible to cram the work of a space station into short term missions flown by tiny spacecraft.
While they would indeed find a lot of creative means to leverage their available spacecraft and launchers, with some much needed help, by the end of the 1970s it was even clearer than it was at the beginning of the decade that a proper space station was needed, and with RLA transforming into Energia, and the Salyut station program restarting, that need would be met in spades in short order.
Leveraging the massive launch capacity of the Energia RL-150 launcher, the eventual Salyut was in a lot of ways very similar to the American Skylab. Like it, it would be a monolithic space station built into the inside of a pressure vessel (or rather, two of them) derived from a large upper stage with much of the station's internal and external equipment already built into the design. However, unlike Skylab, Salyut was a behemoth in just about every sense of the word. At nearly twice the length and twice the mass of Skylab, the station would be comprised of four core sections. The first section, designated the berthing section, was a corridor roughly half the diameter of the rest of the station to which was attached ports to support up to four Soyuz spacecraft at once, two on each side, and at the forward end a fifth port that carried the same APAS docking system that was intended to support a single MKS orbiter. Along the top and bottom of this section were communications equipment, additional radiators, and the beginning of a support structure that was added late in the Salyut design, intended to be used to test out modular additions to the station later on as the MKS program progressed.
The next two sections after this were the main habitable and working volumes. Externally, the main communication equipment and radiators are attached along the top and bottom, while the port and starboard side of the station housed the massive solar arrays that ran the length of the two sections, and extended out nearly 12 meters from the outer hull. Internally, and quite unlike Skylab, the station was built around a central core "elevator", with the open volume divided into numerous, 2.5 to 5 m tall decks, which each deck tailored to the experiments and equipment required, with a basic height of 2 meters established towards the forward 3 decks, where the crew's main habitat was housed, with the remaining 6 decks encompassing the remaining volume, all dedicated to various experiment stations, some of which were swappable, meaning later missions with MKS could augment the station with further capabilities.
The final unpressurized section was the utility and propulsion block. This section housed most of the stations primary control computers, its fuel compartments and onboard engines, and an assortment of other needed systems.
But in the biggest difference from its American predecessor, the entire station was designed as a vacuum-only vessel. Unlike Skylab, which during launch suffered damage to its solar arrays during its launch, Salyut would launch completely enclosed within the large fairing of the Energia, which would not be deployed until just prior to separation from the Energia itself. This key difference would give a great deal of flexibility in how the station was externally designed, allowing it to save mass that would otherwise have been needed to shield critical components from the atmosphere.
Launched in 1980, Salyut would reach its final 400km orbit with zero issues, following a beautiful midnight launch, and would automatically deploy its massive solar arrays as the onboard fuel cells began generating water stores for the station. Eight hours later, in a rare shotgun style dual launch, two Soyuz spacecraft would be launched carrying the stations first four crew members, and after a day in orbit, both Soyuz crews would rendezvous and dock with the station, and after a period of orbital checkout to ensure the station was operational, the continuous occupation of the station would begin, with the remainder of the eight man crew flying to the station two months later. The crews, already well experienced with the cramped conditions of the Soyuz flights prior, would remark that it was like going from a simple cabin to a castle.
Life aboard Salyut was remarkably similar to Skylab, though the rapid pace of work enabled by the massive volume of the station and the large crew would notably skyrocket the Soviets experience in space, and by the end of its first year in orbit the stations entire complement of initial experiments had already been exhausted to a great degree, and while launches of the automated APAS compatible Progress spacecraft (Derived from the Soyuz) had enabled some of this lack of experimentation to be shored up, with medical science and the effects of long term habitation becoming a heavy focus as other experiments ramped down, it was still greatly limited in the available payload mass it could deliver to the station. It would not be until the MKS program got in the air that the station would finally see life breathed back into it.
And indeed, by the end of 1981, Salyut would finally greet its first orbiter. Laika 2 would be launched on December 28th of that year, Laika itself having finally been repaired from its mishap on its first test flight, and aboard would be Alexei Leonov and Ivan Bachurin. Taking place of Salyuts regularly scheduled Progress resupply, Laika 2 would be arriving at the station in between the crew rotation flights, leaving the two outer Soyuz ports open. Laika would leverage this, as among its payload was a pressurized module similar to the Progress craft, designed to carry the stations internally resupply, which after the combined crews had emptied it, would be refilled with the accumulated stations trash to be returned to Earth for disposal.
But in addition to this small module, Laika would carry with it an experimental dedicated airlock module, designed to be permanently attached to the station. It would be the first such module of its kind, augmenting the station with a sorely needed capability. It had been decided years prior that a dedicated airlock would not be included with the station, reasoning that any of the four docked Soyuz spacecraft could be used as one, however in practice this had proven to be a consistent source of difficulty for the cosmonaut crews, and in one notable instance a Chinese cosmonaut was nearly launched off of the stations structure, in a near mirror incident to that which nearly ended astronaut and Moonwalker Pete Conrad and rookie astronaut Joe Kerwin on Skylab years earlier. The dedicated module would resolve this issue, as included in the payload was additional structural elements to give the station better capabilities to be traversed on EVA, in addition to the structural elements required to permanently rigidize the module as part of the station.
But before any of that work could begin, important tasks needed to be undertaken first. Upon Laika's arrival to the station, the first order of business was for a maneuver prompted by the damage Laika had received on its first flight. While ground controllers had greatly augmented their ability to monitor the Energia/Orbiter stack in flight, they only had the available resolution to know if any large impacts had occurred on the orbiter, while any smaller, yet still potentially devastating impacts would be effectively invisible. To overcome this shortcoming, and knowing that every MKS flight would be co-orbiting with Salyut for the foreseeable future, if not docking with it anyway, it was decided that after rendezvous, either crew aboard the station or an onboard camera could be used to look at the orbiter as it is pitched up and over, exposing its belly and underside to allow for visual inspection for any damage.
While the maneuver took up considerable time, and the Orbiters effective ban from any orbit not shared with Salyut being somewhat limiting, it was a necessity for flight planners as until Energia could be rid of its shedding problems, they would not be able to guarantee that the orbiter would be capable of reentry without verification of the thermal protection system's integrity, and if it were to be compromised, any orbit outside of Salyuts would leave the cosmonauts effectively stranded. While there were options considered such as keeping a Soyuz on standby or even the second orbiter, which was beginning its own TPS assembly at the time, these were considered unviable and/or too expensive to be viable.
However, upon Laika's inspection by the Salyut crew, it was found to be as pristine as it had been on the ground, and so Leonov would press the orbiter to dock with the station. It would be Leonov's and Bachurin's first visit to the station, so after a complementary tour of the station, they would return the favor, inviting the station crew to check out Laika. After the cordialities were concluded, Bachurin would begin to maneuver the resupply module into its berth, and the combined crews would work together to process the module and eventually stow it back in the orbiter, at which point the station activities for the day would conclude.
Once the rest period was over, Laika 2 would undock with the station and prepare itself to move the Airlock module out of its transit position in the cargo bay, and onto the docking section of the Orbiter. The module itself, little bigger than a Soyuz, was designed to both be an external airlock and a dedicated docking port for the orbiters, replacing the APAS port that it would be permanently attached to. Once the orbiter lined up with the station with the module ready to dock, Leonov would begin the slow advance towards the station.
Meanwhile, the station crew had moved into their respective Soyuz crafts, as flight rules for this experiment precluded any cosmonauts remaining in the station proper. This also had the added benefit of allowing for an immediate EVA to rigidize the module into the station. While the APAS ports had been redesigned to better support this purpose, they were only ever tested on the ground and out of caution they had opted to reinforce the connection externally. After the excruciating hour long wait for the module to meet its final berth with the station, it would finally dock and after confirming a hard dock had been achieved, the station crew member designated for the EVA would crawl out of her Soyuz and, being met with the orbiters RMS carrying the equipment, would swiftly carry out the necessary work to finish the modules connection to the station, and after a two hour EVA and an hour of waiting for ground control to verify that the station was clear to re-enter, the work would be finally done. The newly birthed module, in recognition of the Interkosmos partner that had both helped construct it and whose cosmonaut would be vital to its installation, would be renamed the Tóngzhì Airlock.
With tensions between China and the USSR still in a steady de-escalation of hostility, as the New Year approached, their cooperation in space only served to reinforce that the Soviet-Sino split, that had long torn the two countries part, was finally starting to mend.
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*So, obviously, there's a lot of juicy stuff in this post that I'm being rather vague about, particularly that first year on Salyut and indeed the Soyuz missions prior, as well as the whole Chinese cosmonauts in the 70s thing, but don't worry. We are going to be seeing a lot more of this period in the near future when we inevitably cover China's place in this timeline, which narratively has to come in the wake of [
redacted][redacted] and the ramifications of [
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*As for Salyut itself, those familiar with Eyes Turned Skyward may no doubt notice certain similarities to its final form, and yes, essentially the Salyut of this timeline is basically a Russianized Spacelab on steroids. This was essentially unintentional; Salyut of this timeline superficially resembles the real Salyuts except blown up in size and scope, and the airlock situation is inherited from that basic design.
For those curious, stat wise it is about 60 meters in length total (though only 50ish meters of that is substantive spacecraft), and about a meter shy of Energia's diameter, and it weighs somewhere in the neighborhood of 120-150 tons. Logically, its internal design is informed in the timeline by the American's experience on Skylab with their open floor plan style station, as well as the Soviets eventual scientific plans for the station, for which the deck style with a central core works best for them.
Incidentally I am also aware of the same study the guys from Right Side Up used to inform their interior design of the Enterprise space station's converted LOX tank, but I personally disagree with how they used that study. Namely because that paper was, to my understanding, assuming that the station would be launched dry and not outfitted in-orbit, which is where I think the papers conclusions would change had the assumption been the other way around, especially given that the specific model for the DSH is very different from what they would use in their station (and indeed, what would eventually be used on Independence, which I wont be elaborating on further 🤐)
That being said, the Soviets ITTL don't look into it that deeply either way; their primary concern is in first using the large amount of space they have in a more utilitarian manner than Skylab was, and second for avoiding the idea of having their cosmonauts get stuck in the middle of the volume with no way to reach anything to grab onto, and with the large mass margin they have to work with, they generally don't ever consider it an issue if they fill in weird geometries with insulation or even just void.
*Also, later tonight I'm going to be going through the previous posts and cleaning up some of the wonkyness (namely with dates, (Already adjusted the Salyut launch date where I had it as I originally couldn't decide where they'd go with it) and there may be some additional details that get added to those posts, so it might be worth your time to give them all a re-read once I'm finished which I'll be sure to note. Nothing should necessarily be retconned (aside from the Salyut launch date as noted), but I think there's some details I should have alluded to earlier in the narrative, and it'll take some re-reading and editing work on my part to see whats what in regards to what I might add. As I noted earlier, the broad strokes of the timeline are planned in at least some detail up to 2015 currently, but as I work through the narrative I struggle to necessarily anticipate how I'll want it to flow in certain parts, and as details get elaborated on that can change things as well. (For instance I originally planned to see MKS suffer 5 unmanned flights before it finally got to see a manned mission, but this didn't seem realistic without forcing it giving the greater cultural and political goings on)
I tend to write these in one go and just post them, which is just an unfortunate consequence of my writing style where I just need to push something out there before I can really look back and think on it, which is no doubt not helped by the fact that for non-fiction writing that I do for school I tend to not need near as much editing work, but with this narrative being so massively longform and with a lot of details flowing in my head I can't quite trust that, hence the need to throw these to the wolves before the might necessarily be ready so I can make my brain work.