What is a Haier rocket?

1844, Hale developed a rotating rocket without guide bars and applied for a patent. Hale installed three inclined stable spiral plates at the tail of the rocket, and the gunpowder gas ejected from the tail of the rocket made the rocket rotate in flight to achieve stability. This new design greatly improves the accuracy and hit rate of the rocket. The birth of Hale rocket extended the history of modern rocket weapons powered by black powder for nearly half a century.