Wang Xiji: From Sounding Rockets to Dongfanghong-1

Building sounding rockets with very limited resources

When Wang took over the sounding-rocket program, the team faced a shortage of experience, equipment, materials and industrial capacity. Despite those constraints, his group developed the T-7M, a liquid-fuel sounding rocket that launched successfully in 1960. The achievement is widely regarded as an important first step in China’s space program.

A sounding rocket does not carry a payload into orbit. Instead, it sends instruments into the upper atmosphere to study atmospheric and near-space conditions. For China at the time, however, the program had a wider value: it created practical experience in propulsion, structures, guidance and launch operations—knowledge that could support the development of missiles and orbital launch vehicles.

Reports credit Wang with leading or participating in 12 of the first 18 sounding-rocket models developed in China. He later described the T-7M launch as a decisive starting point in his space career.

Long March 1 and Dongfanghong-1

Building on the experience gained through sounding rockets and related engineering work, Wang proposed the overall technical plan for the Long March 1 launch vehicle and led development during its preliminary design phase.

On April 24, 1970, Long March 1 completed its first flight and placed Dongfanghong-1, China’s first artificial Earth satellite, into orbit. The launch gave China an independent capability to send satellites into space and marked a transition from high-altitude experiments to orbital operations.

The progression was technically significant: sounding rockets served as experimental platforms, while Long March 1 transformed that accumulated knowledge into an orbital launch capability. Wang’s role connected those stages of development into a continuous engineering effort.

Recoverable satellites and mastering re-entry

Wang was also chief designer of China’s first recoverable reconnaissance satellite. After extensive testing, calculations and system coordination, the satellite was launched and recovered successfully in Guizhou in 1975.

Satellite recovery is considerably more demanding than simply reaching orbit. A spacecraft must return through the atmosphere at a controlled trajectory, withstand intense heat and deceleration, and then be located and recovered on the ground. With this achievement, China became the world’s third country to master satellite-return technology.

Wang continued to work on later generations of recoverable satellites. Official accounts also credit him with helping establish the fields of unguided-rocket technology and space-recovery technology in China.

A pragmatic view of human spaceflight

From the 1980s onward, Wang took part in discussions and planning for China’s human-spaceflight program. His position emphasized feasibility rather than technological spectacle. Given China’s economic resources, industrial base and technical capabilities at the time, he favored starting with non-reusable crewed spacecraft instead of a more costly and technically demanding shuttle-style reusable system.

The approach reflected a consistent engineering philosophy: ambitious long-term goals must be matched with realistic routes to achieving them. In Wang’s view, technical sophistication could not be separated from affordability, feasibility and the ability to sustain development over time.

“Seeking truth from facts”

Wang frequently emphasized the principle of “seeking truth from facts.” He argued that technical decisions should follow objective laws rather than simply reflect majority opinion. A minority position, he believed, could be correct if it was supported by sound evidence and reasoning.

That mindset suited the demands of aerospace engineering, where complex systems involve many interacting variables and final judgments must be tested through calculations, experiments and operational results. Wang’s legacy therefore extends beyond particular rockets and launches: it also represents an engineering culture grounded in evidence and respect for physical constraints.

Still looking ahead in old age

Wang continued to engage with new space ideas long after his early rocket and satellite work. At 80, he served as chief designer of the China–Europe Double Star Programme, which studied Earth’s magnetosphere.

In his 90s, he continued promoting research into space-based solar power. At 95, he was still considering how internet technologies could be connected with space programs. Reports also describe him as an early advocate of “space infrastructure”—the idea that space systems should develop beyond one-off missions into networks capable of supporting communications, services and long-term social needs.

These later interests extended a principle visible throughout his career: space technology should serve practical purposes and be developed as a sustainable system, not merely as a display of technical prowess.

Honors and historical legacy

Wang was elected an academician of the Chinese Academy of Sciences in 1993. In 1999, he received the national “Two Bombs, One Satellite” Meritorious Service Medal, recognizing important contributions to China’s early ballistic-missile, nuclear-weapons and satellite programs.

His historical importance cannot be reduced to a single rocket or launch. He helped develop China’s first generation of sounding rockets, proposed the overall technical plan for Long March 1, served as chief designer of the country’s first recoverable satellite and contributed to later discussions about human spaceflight and emerging space systems.

Wang’s legacy includes the symbolic achievement of Dongfanghong-1 reaching orbit, but also the less visible foundations of satellite recovery, aerospace-engineering disciplines and long-range planning. His life followed—and helped shape—China’s transition from basic rocket experiments to a more systematic space program.