- fuse;
- warhead;
- rocket section.
The M-21OF unguided rocket (index 9M22U) when fired from a launch vehicle is designed:
- to destroy and suppress enemy manpower and materiel in areas of concentration;
- for the destruction and suppression of artillery and mortar batteries;
- to destroy enemy fortifications, strongholds and resistance points.
The licensed production of the rocket was organized in Bulgaria, Romania and Czechoslovakia. A number of countries are continued to use it as the standard for development of own variants.
Technical specifications
| Caliber | 122 mm |
| Rocket length with fuse | 2,870 mm |
| Warhead type | high-explosive fragmentation |
| Weight: - final charge - rocket in box - warhead - explosive filler in warhead - propellant charge |
66 kg 100 kg 18.4 kg 6.4 kg 20.45 kg |
| Maximum rocket velocity under normal conditions | 690 m/s |
| Range of fire: - maximum - large bracking ring - small bracking ring |
20,400 m up to 12, 000 m between 12,000 m and 16,000 m |
| Temperature range | –40 – +50 °C |
| Overall dimensions of box | 2,810х290х254 mm |
Sources:
- Боевая машина БМ-21. Техническое описание. Книга 1. – М.: Воениздат, 1971. – С. 7,8,91.
- Боевая машина БМ-21. Техническое описание и инструкция по эксплуатации. Изд.3-е, стереотипное. – М.: Вооружение. Политика. Конверсия, 2002. – С. 5-6
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