China could shift to fully reusable super heavy-launcher in wake of Starship

China’s launch vehicle makers appear to be designing a fully reusable version of the Long March 9 super heavy-lift rocket needed for future megaprojects. The emergence of plans for new reusable methane-liquid oxygen launch vehicles to be ready for 2035 suggests that China is looking to make significant changes to its space transportation plans. China’s government last year signaled approval for the continued development of a super heavy-lift launcher, known as the Long March 9. The long-planned, expendable launcher is planned to be operational by 2030, in time to facilitate Chinese megaprojects including the International Lunar Research Station. The giant rocket will consist of three stages and four side boosters, with the first stage and boosters using a kerosene and liquid oxygen propellant mix. However, a new concept for a fully reusable two-stage launcher has now been presented in a recent public lecture (viewable here) by Long Lehao, a veteran chief designer of the Long March rocket series. The first stage of the 10.6-meter-diameter launcher would be powered by 26 clustered 200-ton-thrust methalox engines. It would be capable of carrying 150 tons of payload to Low Earth orbit, 65 tons to geosynchronous transfer orbit, or 50 tons to trans-lunar injection. Long, a senior official who frequently presented updates on China’s space activities, revealed that the new launches are to be ready by 2035, and likely developed in parallel to the expendable version.

A Long March 5, currently China's largest rocket, launches the Chang'e-5 lunar sample return mission Nov. 23, 2020. Credit: CNSA

The largest variant, apparently including a third stage, would have a length of 110 meters and a takeoff mass of 4,122 tons.

The concepts would be a dramatic departure from both the expendable model of the Long March 9 and a version with a reusable first stage presented last year, with fully reusability now a goal. The frequent change in concepts however also suggests China’s plans are somewhat in flux.

The presentation, made in July, comes shortly ahead of first orbital test flights for the expendable Space Launch System and SpaceX’s fully reusable Starship.

Methane-liquid oxygen offers advantages in performance and reduces issues of soot formation and coking for purposes of reusability. The plans follow the trend of SpaceX, Blue Origin and United Launch Alliance in switching to the fuel.

It also follows a smaller two-stage methane-liquid oxygen launcher concept, apparently drawing on SpaceX’s Starship, presented by Wang Xiaojun, president of the China Academy of Launch Vehicle Technology (CALT).

The apparent switch to methalox appears sudden. China’s propulsion institutes, under the state-owned conglomerate the China Aerospace Science and Technology Corporation (CASC), have however long been working on methane engines, making a change of plans somewhat feasible.

A smaller five-meter-diameter reusable rocket presented by Long could potentially be intended to replace a number of aging hypergolic rockets, as well as more recent kerosene-fueled Long March rockets which have become operational over the last decade.

Chinese commercial launch companies Landspace and iSpace have been developing methane-liquid oxygen launchers in recent years, possibly with help of military-civil fusion national strategy which facilitates transfer of restricted technologies.

Landspace is set to attempt its first launch on the methalox Zhuque-2 in the near future from Jiuquan spaceport. Competitor iSpace is also preparing to conduct hop tests with a methalox first stage test article for its reusable Hyperbola-2 rocket at Jiuquan.
Long March 9 evolution

While various figures have been published, the original, expendable Long March 9 is expected to be around 103 meters long, feature a 10-meter-diameter core and have a mass at liftoff of 4,140 metric tons, and be capable of lifting 140 tons to Low Earth orbit or 50 tons to trans-lunar injection.

Dual nozzle 500 ton-thrust kerosene-liquid oxygen (YF-130) engines will power the first stage and boosters, 220-ton-thrust liquid hydrogen-liquid oxygen staged combustion cycle (YF-90) engines for the second stage, with significant progress already made on both. Vacuum-optimized hydrolox engines would power the third stage.

The reusable first stage version presented in 2021 would switch to a first stage using 16 clustered 360-ton-thrust kerolox engines and no side boosters. 120-ton-thrust hydrolox engines would be used for the second and third stages.

The largest variant of the Long March 9 in Long’s new lecture featuring the fully reusable concepts would have a 10.6-meter-diameter, a length of 110 meters and takeoff mass of 4,122 tons, matching the capabilities of the earlier plans.

A more economical, reusable version of the Long March 9 could be ready to support a proposed space-based solar power program in geostationary orbit.

China is also developing a three-stage heavy-lift rocket designed to be capable of sending Chinese astronauts to the moon. A two-stage version for low Earth orbit could have its first flight in 2026.

NASA releases first color image from James Webb Space Telescope

A deep field of distant galaxies, some dating back to the first billion years after the Big Bang, is the first full-color image to come from the James Webb Space Telescope. The image, released at a White House event July 11 and called “Webb’s First Deep Field,” is a sneak preview of a broader set of early release observations that NASA and its European and Canadian partners on JWST plan to publish July 12. The White House event, attended by President Joe Biden and Vice President Kamala Harris, was announced with less than 24 hours’ notice. The image shows a galaxy cluster called SMACS 0723 about 4.5 billion light-years away. The cluster acts as a gravitational lens, bringing into view far more distant galaxies, some of which appear in the image as arcs. “We’re looking back more than 13 billion years,” said NASA Administrator Bill Nelson at the event. The NASA statement accompanying the image release didn’t give specifics on the more distant galaxies visible in the image, which involved 12.5 hours of images taken at several wavelengths. The Big Bang took place an estimated 13.8 billion years ago, meaning those distant galaxies date back to when the universe was less than a billion years old. The detail in the image comes from a very tiny part of the sky. “If you held a grain of sand on the tip of your finger at arm’s length, that is the part of the universe you’re seeing. Just one little speck of the universe,” Nelson said.

Biden appeared pleased by what he saw and by the performance of JWST. “It symbolizes the relentless spirit of American ingenuity and it shows what we can achieve, what more we can discover,” he said of the space telescope, which finally launched last December after billions of dollars of cost overruns and years of schedule delays. JWST is now working better than expected at the Earth-sun L-2 point 1.5 million kilometers away. “These images are going to remind the world that America can do big things.”

“This telescope is one of humanity’s great engineering achievements,” added Harris. Both she and Biden emphasized the role of international cooperation in JWST’s development, including how, according to Harris, “a scientific endeavor can build upon the international rules and norms that govern our cooperation in space.”

The White House event started more than an hour later because, Biden said, he was busy preparing for an upcoming trip to the Middle East. Media were ushered out of the room and the webcast ended after only about 10 minutes.

Scientists and others were immediately impressed, though, with the image. “This is just a first glimpse of what Webb can do,” said Macarena Garcia Marin, ESA instrument scientist for a mid-infrared instrument on JWST called MIRI, in an ESA statement. “While we are truly in awe today of Webb’s first deep field, I can’t help but think of what images and science results are just around the corner in the many years to come.”

“The first image from the James Webb Space Telescope unveiled this evening is an incredible preview of its remarkable technology and scientific power,” said Rep. Eddie Bernice Johnson (D-Texas), chair of the House Science Committee, in a statement that featured bipartisan praise of the spacecraft from the committee’s leadership. “As a steadfast supporter of Webb and its mission, I am elated to see this image today — an image that has been 20 years of hard work in the making.”

The deep field image was originally scheduled to be released July 12 with the other early release observations. NASA and its partners will still release those other observations at that event. The other observations, announced by NASA July 8, include the Carina Nebula and Southern Ring Nebula within our own galaxy and the galaxy group Stephan’s Quintet about 290 million light-years away. NASA will also release spectra of the exoplanet WASP-96b, a “hot Jupiter” planet orbiting close to its star.