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飞行试验结果表明:小型弹道式再入体在再入期间经常受到滚速异常问题的干扰。滚速异常是再入气动力学中的一种现象,它包括滚速过零、滚动共振及联锁等。这种现象会大大降低再入体飞行性能,经常引起弹着点散布、侧向载荷增大、甚至飞行失败。随着分导多弹头的出现,再入体趋向小型化;命中精度的提高又要求再入体采用细长尖锥外形,而小型细长尖锥再入体遭遇滚速异常的几率增加,结果就使再入体滚速异常问题受到更多的重视。
The flight test results show that the small ballistic reentry body often gets disturbed by the problem of anomaly of roll speed during reentry. Rolling speed anomaly is a phenomenon in reentry aerodynamics, including rolling speed zero crossing, rolling resonance and interlocking. This phenomenon will greatly reduce the re-entry flight performance, often causing the pop-up point spread, lateral load increases, and even flight failure. With the advent of subduction and multiple warheads, the reentry body tends to be miniaturized. The improvement of hitting accuracy also requires the reentrant body to adopt the slender cone shape, while the small slender reentrant body experiences an increase of the rolling velocity anomaly. As a result, Make re-entry body roll anomaly more attention.