Morning all. As promised, this week we see the Soviet reaction to Muskie's lunar challenge, and take a look at ongoing Dynasoar operations in...
Part III Post #4: Deep Freeze
President Muskie’s announcement of what was to become Project Columbia was not widely reported in the USSR. The return of heavy censorship under Shelepin meant that few outside of government or military circles were aware of the details of his speech, with the coverage in
Pravda limited to a general denouncement of Muskie’s imperialist agenda. That select group who were kept more informed included the Chief Designers of the Soviet space industry, and their reaction was a curious mixture of hope and fear. The source of the hope was obvious. For much of the past decade, the direction of America’s plans in space had acted as a spur to the Soviet government to match their Cold War adversaries. Without America’s Dynasoar and Minerva projects, there would be no Raketoplan or Proton, and even Mishin’s Chasovoy space station would have been at risk of cancellation without the impending threat of DOS. If the Americans were now going to travel to the Moon, there was a good chance of persuading the Politburo to look again at their own lunar proposals, which had languished unread in Defence Ministry filing cabinets for the past few years.
The source of the fear was more complex, and was part of the general mood of the times. Heavy censorship was not the only echo of Stalinism that had returned under Shelepin, and each of the Chief Designers had had key personnel “reassigned” over the past few years, with just one high-profile example being Chelomei’s capable deputy Sergei Khrushchev, who had been sent to manage a metal-working plant in Novosibirsk. Whilst none of the Chief Designers themselves had yet been purged in this way, the sudden replacement of Mitrofan Nedelin by Boris Suvorov as head of the Military-Industrial Commission in March 1968 indicated that seniority alone was no sure protection. Usefulness to the regime was a far more reliable shield against sudden removal, and in this respect by far the best placed member of the KKRD was Mikhail Yangel.
Whilst Chelomei and Mishin had spent the ‘60s fighting each other for control of prestige projects, Yangel (and to a lesser extent Glushko) had quietly got on with the work of turning out reliable, effective missile weapons systems. Following the ouster of Khrushchev, Chelomei had been stripped of many of his responsibilities, whilst Mishin, the ostensible victor, saw his budget for manned spaceflight cut back. Glushko had also seen some of his funding withdrawn, in particular his research into hydrogen-oxygen and methane-oxygen engines (although, ironically, funding for his belated efforts on large kerolox engines was increased), but Yangel had received a boost in funding as the government worked to expand the Soviet armed forces, including the nuclear deterrent. Taken together with Yangel’s well-established role as an arbitrator and peacemaker between the squabbling factions of the Soviet space industry, this gave him a new prominence as the 1960s drew to a close, and in 1967, at Ustinov’s urging, he had been named a Candidate Member of the Central Committee. It was therefore Yangel who agreed to coordinate and present a joint KKRD recommendation for a response to Columbia to Suvorov and the Politburo.
Agreeing what that joint recommendation would be was no simple task. Both Mishin and Chelomei had long harboured their own plans for lunar travel, but both concepts relied upon large new rockets to implement them. Despite a considerable amount of conceptual design work carried out in the early ‘60s, since the reassignment of the UR-500 “Proton” to Yangel’s OKB-586 Chelomei had been unable to obtain funding to conduct a detailed design of his UR-600 heavy launcher. Yangel and Glushko had made some further progress on their R-56 design, with Glushko performing ground tests of the RD-271 engine intended to support the heavy launcher, but completing its development would still take a minimum of five years and hundreds of millions of rubles. Meanwhile, TsKBSO’s M-3 rocket was still no more than a concept, and even Mishin was forced to admit that it could not possibly be ready in time to meet the American deadline.
So, like von Braun, the Chief Designers were forced to scale back their plans and focus on what could be done with the launchers already to hand. The discussion therefore immediately focussed on Proton, the largest launcher in the Soviet inventory. Now over the worst of its early development problems, Proton was becoming a reliable workhorse, but Yangel’s analysis showed that the rocket would be able to put less than 6 tonnes of payload onto a Lunar Transfer Orbit. This meagre mass budget would pose a severe challenge to the designers, but Mishin felt that he would be able to squeeze within this constraint with a one-manned upgrade to his Zarya capsule that could be ready before the American target date of 1976. Chelomei countered that his more modern Safir capsule, developed as part of the Raketoplan system, would be light enough to support a two-man crew on a circumlunar mission.
The compromise Yangel negotiated was a short-term circumlunar mission using an upgraded Zarya capsule to be launched on his Proton booster carrying a single cosmonaut. This would all but guarantee a Soviet flight around the Moon before the Americans. In parallel, Chelomei would continue development of his Safir capsule, with the aim of allowing more capable lunar missions in the future, including a potential direct-ascent landing mission. Mishin’s TsKBSO would lead early development of the M-3 superbooster to support these future missions, in collaboration with Glushko and Yangel, with a full landing mission targeted for 1978.
Yangel’s compromise was put to the Council of Ministers in November 1970. By this point, with Brezhnev having been removed from the Chairman’s position, the Council had been filled with Shelepin’s picked men and wielded even less power than it had under Khrushchev, now taking its orders directly from the Politburo. Within that Party grouping, there were concerns beginning to be muttered that Shelepin’s massive military build-up was stripping the economy bare, with internal Party numbers showing that the USSR’s annual Net Material Product (NMP, the Soviet version of GNP) had grown on average just 3.1% between 1965-70 (as opposed to the 8% growth published in official government reports). Shelepin’s firm grip on the KGB and his supporters in the military meant that these voices stayed subdued, but in areas like space travel, where the General Secretary had not invested his personal support, a few concerned Politburo members were able to swing the rest away from large new expenditures. M-3 and a Moon landing were therefore off the table, and Yangel ordered to definitively decide between Zarya or Safir. The state would not spend money developing two parallel spacecraft when it was already paying for Zarya and Orel for Earth orbit missions. For now, the focus would remain on extracting military value from already funded projects.
Manned missions to LEO were becoming more and more routine by this point, both for the USSR and the USA. Although the large Dynasoar Orbital Laboratory was facing continuing delays, by 1968 its smaller brother, the Dynasoar Experimental Lab (DEL), was ready for its first mission. Launched from Vandenberg atop a Minerva-22 in April 1968, the DEL replaced the Mission Module of the Mk.II glider
Thebe, making her first flight into space. The mission commander was Mercury-4 veteran Bob White, accompanied by two rookies of the Air Force Astronaut Corps’ 1966 intake, Larry Hanson and Doug Boone. The full glider-plus-DEL stack, massing just over 15 tonnes, was placed into a near-polar low Earth orbit at the start of a ten-day mission.
Although the launch was given considerable publicity, and the astronauts gave a brief 10-minute radio interview “Live from Space” on day two if the flight, the bulk of the mission was shrouded in the type of secrecy that was becoming customary for Dynasoar flights. Almost nothing was publicly revealed about the experiments flown, and even the orbital parameters were kept secret. However, with her increased size, large solar panels, and the constant flow of (encrypted) radio traffic, an informal network of international space enthusiasts were able to track the complex and would later publish detailed overviews of DS-9’s orbital movements in articles for
Aviation Week,
Spaceflight, the
Journal of the British Interplanetary Society and similar specialist publications. These amature space sleuths discovered that despite the greater mass of
Thebe-DEL (a third again heavier than
Athena on DS-8), the space station conducted a number of manoeuvres in total exceeding 200 m/s delta-v. This was close to the upper limit estimated for the Mk.II glider with a standard Mission Module, and suggested that a considerable propulsion capability had been included in the DEL. Although the Air Force refused to comment on these articles, in private the Pentagon was split between those who wished to keep all aspects of DEL’s capabilities secret, and those (mostly working in intelligence) who were interested to see just how much data an uninformed opponent could uncover. After all, they reasoned, if amature skywatchers could work it out then surely the Soviets were drawing similar conclusions. Finding out just how much could be deduced would highlight which activities gave away what information, and so help to make future missions more secure.
Whilst testing the manoeuvring capabilities of the DEL was indeed one of the objectives of the DS-9 mission, the crew spent most of their time trying out operational procedures for real-time intelligence gathering using a system of NRO-supplied cameras. This would involve Mission Control at Vandenberg first informing the crew of any updates to the pre-flight target list for a given orbit. Based on this list, White would adjust the ship’s orbit and attitude as needed, while Hanson manned the main high-powered camera and located the primary target. If the target was obscured by clouds, he would switch to an alternate target. In the meantime, Boone was manning a forward-facing wide-angle camera to get a first-look at potential targets-of-opportunity along the flight path. While the DEL was passing over Earth’s night-side, copies the most promising shots were developed on-board and scanned by the crew for faxing back to Earth. This might then result in an update to the target list for the next time that region intersected DEL’s ground track, normally the following day.
Although this method of working was hoped to increase the flexibility and efficiency of satellite reconnaissance, in practice several problems were found. The first of these was simply that the small size and mass limitations of the DEL meant that even its high-powered ‘scope was nothing like as powerful as the instruments now standard for the NRO’s spy satellites. Even with this reduced magnifying power, several images were found to have been distorted by the movement of the astronauts within the craft, a problem which would only be worse for a larger instrument. Also, the use of the forward-facing target-of-opportunity imager was found to be quite limited, as DEL’s orbital speed meant that by the time a target was assessed as being worth imaging, there was no time left to re-target the main camera. The ability of the astronauts to quickly switch from cloud-covered primary targets to clear-skies secondaries was effective, and prevented the capture of a great many pictures that would have proven unusable, which in theory extended the lifetime of the system by making the film stock last longer. However, given the mission was limited to ten days in any case by consumables limitations, this was hardly a major consideration. Engineers on the ground quickly realised that it would be far cheaper and easier to take out the men and their heavy life-support and return systems, using the mass saved to carry more film.
One final experiment that did show promise was carried out during an EVE by Bob White on mission day 7. Following the example of Paul McEnnis, White exited via the access hatch atop
Thebe’s cockpit, with Boone and Hanson also suited up in the vacuum-filled glider in order to be able to offer assistance in case of an emergency. Unlike McEnnis, White was able to use an extendable ladder deployed from the DEL to pull himself along the glider’s exterior far more easily than using the unwieldy “MAD pole”, and additional handholds built into the DEL’s hull greatly simplified is movement to the externally mounted Film Replacement Experiment. This consisted of a box-like canister, approximately one metre by sixty centimetres in area, containing a prototype film cartridge system designed specifically for easy replacement by a spacesuited astronaut. Using a simple tool attached to his suit, White was quickly able to release the outer door and extract the cartridge. He then put it back into the canister and locked it into place, demonstrating an ability to replace film on an operational system, before once more pulling it free and taking the cartridge with him back to the glider’s cabin. Where McEnnis’ EVE had demonstrated that men could survive open space, White’s spacewalk for the first time demonstrated an ability to perform useful work. DS-9 may have shown that a manned system wasn’t the best choice for high-powered photoreconnaissance, but perhaps there was still a useful role that man could perform in orbital servicing.
This photo, declassified in 2002, shows the DS-9 Dynasoar Experimental Lab shortly after the glider Thebe
undocked, April 1968.