Infrared Countermeasure Station BNT-A is intended for active protection of helicopters against guided missiles equipped with infrared homing heads. The majority of known such stations basically suppress infrared homing heads with amplitude-phase modulation (APM). Its interfering signal should exceed a signal from the helicopter’s engines in 1,5÷2 times, and in some cases up to 20 times. The station is capable to suppress infrared homing heads with CCM function for other types of modulation: frequency-phase modulation (FPM) and pulse-length modulation (PLM). This allows full lock-on failure for such guided missiles, as “Stinger”, “Igla”, “Igla-1″, R-60М, R-73, “Sidewinder” and other.
We applied new method of optical-electronic suppression and new modulator design with electronic control on the basis of programmed processors (DSP). Patents protect all novelties. For protection efficiency improvement, in addition to IRCM station, special screens and engine exhaust shields are used to provide decrease of helicopter thermal visibility.
The station is designed for installing on Mi-24, Mi-8, Mi-17 helicopters and their modifications, but can be also installed on other helicopters after additional works, provided by company specialists.
The station passed all official tests and is exported to various countries.
The likelihood of defeating guidance unit of a Stinger-type missile (%)
Time needed to divert a Stinger-type missile from its course (s)
0,7 - 0,8
0,5 - 0,8
The system is efficacious against IR-guided missiles
of various types and does not need to be readjusted
Three-phase - 200V, 400Hz; Single-phase -
115V, 400Hz; Direct voltage - 27V
Up to 26