The parafoil greatly reduces the area within which rocket boosters fall after launch.
booster lands. The parafoil automatically opens at a set altitude during descent, helping guide the booster back to a predetermined landing area.A Chinese Long March 3B rocket was outfitted with a parachute for a launch in May 2023, to reduce the size of the booster’s crash zone when it returns to Earth.
The system reduces the size of the landing zone by 80%, according to CALT. This advance, in turn, reduces the area that needs to be evacuated for launches, lowering the threat of damage to property or harm to people and animals downrange and the cost of safety and recovery measures. China's first three national spaceports were built during the Cold War at a time when the country feared that the United States and Soviet Union could strike its launch facilities .
Thus, for reasons of security, these spaceports were constructed inland. But this strategy created its own problems, due to spent rocket stages falling on land rather than at sea, as with most global orbital launches. China's launch activities have greatly increased in recent years, meaning the issue of spent boosters falling near inhabited areas has become more pressing. Drop zones for spent rocket stages are calculated carefully to avoid more built-up areas, but the variability inherent in launches means that these heavy rocket components can still fall within a wide area.
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