OVERVIEW: The TSP‑47 is a 140 mm short-range chaff decoy round introduced in 1970, used to seduce radar-guided threats. It is launched from Russian naval PK‑2 trainable decoy launchers.

DETAILS: The TSP‑47 is one of the primary radar-dipole chaff rounds compatible with the two-barrel PK‑2 decoy launcher system developed from 1969 and utilized across various Soviet/Russian ship classes. The round measures approximately 1,105 mm in length, weighs about 36 kg, and carries around 7.73 kg of chaff payload . Designed for close-range deployment, it disperses a cloud of radar-reflective dipoles to seduce incoming missile seekers at standoff distances typically between 500 m and 6 km . The PK‑2 system, including the TSP‑47 round, has been fielded on several Russian surface combatants such as the Project 1143 Carrier, Project 1155 Udaloy I, and Project 1123 Moskwa classes.

FONCTION:
Launched from PK‑2 trainable dual decoy tubes in response to radar threat detection.
Travels to a preset range before ejecting radar-reflective dipoles.
Creates a false radar signature to attract and mislead incoming missiles.

SOURCE:
en.wikipedia.org “PK‑2” article ; russianships.info