The blow-down control system is controlled by computer and consists of the following sub-systems:

• the pressure regulating valve control subsystem
• the transonic Mach number control (top and bottom flaps and blow-off valve) subsystem
• the software protection against overloading the balance and sting
• the model angle of attack control subsystem
• the blow - down sequence control subsystem
• the Schlieren control subsystem
• the scanivalve control unit.