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China launches Shenzhou-21 spacecraft with 4 mice aboard for 6-month experiment
China launches Shenzhou-21 spacecraft with 4 mice aboard for 6-month experiment
Both machines are part of the Centrifugal Hypergravity and Interdisciplinary Experiment Facility (CHIEF), a national laboratory 15 metres (49 feet) beneath the university campus to minimise vibration and ensure stable operation.
CHIEF1300 dethroned the long-time record holder operated by the US Army Corps of Engineers in Vicksburg, Mississippi, which has a capacity of around 1,200 g·tonne. That is in contrast to a household washing machine which rarely exceeds 2 g·tonne during a spin cycle.
Approved in 2021 with a budget of 2 billion yuan (US$285 million), the CHIEF complex is part of China’s broader effort to expand cutting-edge research infrastructure and promote international collaboration. The facility is open to users from universities, research institutes and industries – both domestic and overseas.
All objects on Earth are subject to gravity and the centrifugal force induced when spinning. By generating forces hundreds or thousands of times stronger than Earth’s gravity, machines such as CHIEF can compress time and distance, making it possible to study phenomena that would otherwise take decades or span kilometres, all within a lab.
For example, to assess the structural stability of a dam 300 metres (984 feet) tall, scientists can build a three-metre model and spin it at 100g. This replicates the same stress levels the full-scale dam would experience in the real world.
