The rockets are free-flight, spin-and-fin stabilized rockets, and do not have guidance systems.

火箭是无控-飞行、旋转-和-翼稳定火箭，而且没有制导系统。

youdao

Fortunately, during our flight, that condition stabilized, and we ended up with a situation where all the winds were going in the same direction, all heading east.

ENGADGET: Art Thompson, Red Bull Stratos' technical project director, talks circuit breakers, wind shear and biomedical data