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NEW, Dec. 15: Super-heavy launcher
Russia outlines its rocket-development strategy
In the spring of 2013, the Russian space agency, Roskosmos, released another version of a public document outlining the nation's latest strategy in space. The 17-page paper, dated April 29, 2013, did not contain any surprises among proclaimed goals in space or means to achieve them, but clarified the agency's timeline in the development of launch vehicles.
Previous chapter: Russian space program during 2010s
Above: A timeline of launch vehicle development in Russia as of 2013. At the beginning of 2015, the development of super-heavy rockets was deferred until 2030s.
Since rockets always form a foundation of any independent space program, the agency's commitment or lack of thereof to the development of new launchers illustrated the pace and scope of the Russian space program. As in previous revisions of the document, all future goals were grouped into time periods before 2015, before 2020, before 2030 and after 2030:
Before 2015, Roskosmos pledged to fulfill following goals:
For the exception of launching Angara from Plesetsk before 2015, the document established no solid deadlines for any major goals in space and pushed most ambitious projects well into 2030s. Most notably, the prospects for the development of super-heavy launchers receded from 2020s to 2030s in just one year of strategic planning. As one veteran of the rocket industry put it, in the field of launch vehicle development, this program had given birth to a mouse instead of a mountain. (655)
As the Angara rocket family was reaching the launch pad in mid-2010s, Roskosmos had to decide on the capabilities and the architecture of the next-generation space launcher. The payload of the largest approved version of the Angara rocket approaching 25 tons to the low Earth orbit was far not enough for any deep-space missions that were considered at the time as the next step in manned space flight.
No matter what the final architecture the super-heavy rocket would ultimately assume, its development would likely present a number of the same challenges for the Russian engineers. First of all, the use of liquid hydrogen would require new infrastructure handling cryogenic propellant at the future launch site in Vostochny, in addition to already funded facilities for liquid oxygen and kerosene. Hydrogen infrastructure could probably grow from initial facilities built to support upper stages of future rockets equipped with the RD-0146 engine. However a much more powerful hydrogen engine, like Energia's RD-0120 from the Soviet era, would have to be revived to propel larger booster stages of prospective launchers.
Last but not least, a special assembly factory would have to be built right at the launch site in the remote Far East of Russia, because ground transportation of such large components with a diameter of eight or even 12 meters from the European part of the country would be impossible, while air deliveries could prove unaffordable. In March 2014, a representative of the NPO Technomash Aleksei Baraev was quoted by the ITAR-TASS news agency as saying that the core stage of the future super-heavy launch vehicle would have a diameter of about 10 meters, making its transportation to Vostochny impossible. As a result, the rocket would need a production facility at the new launch site. According to Baraev, the development of an entirely new aircraft for the purpose was explored, however such an option was recognized as considerably more expensive.
At the beginning of December 2013, a commission from Roskosmos including officials from TsNIIMash and other organizations of the rocket industry surveyed potential launch sites in Vostochny for manned missions and for super-heavy launch vehicles, the official ITAR-TASS news agency reported.
Vostochny to overtake Baikonur
In December 2014, Vice Prime Minister Dmitry Rogozin told the Argumenty i Fakty weekly that the Vostochny would take over federal launches, while Baikonur would be reserved for commercial missions. Although such an arrangement was probably designed to settle concerns of Kazakhstan about the future of Baikonur, the scheme would probably last onle as long as Angara-5 was undergoing flight testing during 2010s. However, as soon as the new-generation rocket would be declared operational and deployed in Vostochny, there would be little sense for Russia to continue the production of the veteran Proton based in Kazakhstan.
During the 2010s, Russia remained one of the few space powers that still officially pursued the development of a partially reusable launcher. Moreover, the official strategy of Roskosmos called for the eventual replacement of the nation's most powerful throwaway rockets with fly-back boosters. Unfortunately, the Russian attempts to forge a cooperative effort with the European industry in the field of reusable rockets under Barguzin and Ural projects apparently fizzled out after only very preliminary work. Still, many Russian forward-looking documents called for the eventual development of the Reusable Launch Vehicle, MRKN.
Although most designs of heavy and super-heavy rockets in Russia relied on tried and tested RD-170, RD-180 and RD-0124 engines, even more powerful propulsion systems appeared on the horizon in the country during 2010s. In April 2012, the Interfax AVN news agency reported that RKK Energia and Keldysh Center proposed the Scientific and Technical Council at Roskosmos to consider the use of the RD-175 engine, then under development at NPO Energomash in Moscow, whithin the project of a super-heavy rocket.
Few details on RD-175 were available, besides its whooping 1,000 tons of thrust. A designation indicated that it might be derived from RD-170/171 and, thus, would use liquid oxygen and kerosene. At the time, NPO Energomash completed the preliminary design of the engine and was assembling an experimental unit to test its key design features. (640) In 2013, NPO Energomash reitirated that the work on RD-175 was ongoing.
Course correction in 2015
With the onset of the new economic recession in Russia in 2014 and the replacement of Roskosmos leadership in January 2015, the agency held a meeting of its Scientific and Technical Council, NTS, on March 12, 2015, dedicated to the launch vehicle policy. As expected, the NTS essentially shelved the development of the super-heavy launcher to cut costs.
The NTS also postponed until further consideration the request for funding within the FKP-2025 federal space program for the development of a methane-burning engine to propel an ultra-light reusable launcher.
Instead, Roskosmos recommended to develop a preliminary proposal for the upgrades of the Angara-5 rocket with hydrogen-powered stages to form the Angara-A5V variant with a payload of 35 or 37 tons to the low Earth orbit, which could carry manned vehicles into the vicinity of the Moon and onto its surface.
The decisions by the NTS have advisory rather than binding nature, however they are considered crucial for the formation of the Russian space strategy. Indeed, by April, the decision was endorsed by the Kremlin.
Under an unlikely scenario, where US-Russian relations would normalize during coming years, Roskosmos could rely on NASA's super-heavy Space Launch Systems, SLS, to launch its new-generation PTK NP spacecraft beyond the Earth's orbit. Such an option was apparently discussed between two agencies around 2014. For NASA, it would mean extra missions for the underused booster.
Next chapter: Russian super-heavy launcher concept during 2010s
Overview of Russian launch vehicle development roadmap as of 2013:
Read (and see) much more about the history of the Russian space program in a richly illustrated, large-format glossy edition:
Page author: Anatoly Zak
Last update: April 23, 2015
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More than a decade behind schedule, the Angara project promised to give Russia a new-generation of space boosters. Click to enlarge. Copyright © 2013 Anatoly Zak
By 2013, rockets with payloads of 55 tons and above were promised to enter service during 2020s. Copyright © 2012 Anatoly Zak
From 2012 to 2013, prospects for the development of super-heavy launcher, such as Yenisei-5, receded from 2020s to 2030s. Copyright © 2013 Anatoly Zak
A family of reusable launchers proposed by GKNPTs Khrunichev within the MRKN project. Click to enlarge. Copyright © 2013 Anatoly Zak
Around the time Roskosmos was considering its decision on the super heavy launcher development, Ukrainian KB Yuzhnoe design bureau proposed a Mayak launch vehicle with similar capabilities. Copyright © 2013 Anatoly Zak
Rendering of the RD-175 engine. Credit: Keldysh center