This famous helicopter manufacturer achieved the breakthrough of the sound barrier with the Bell X1-A rocket plane (see main text = Bell).

-It also manufactured its own rocket engines.

-Bell is a division of the Textron Group, which also includes Lycoming and Cessna, in the aeronautical field.

-We have now seen the thrusters for controlling the Minuteman III (ICBM) used for Roll-Pitch and Yaw maneuvers.

“Two Thrusters of the Minuteman III” (PiP)