OFAB 250-270 ТВ High-Explosive Thermobaric Bomb

NSN: 1325

This aerial  bomb is effective against exposed personnel and/or personnel in trenches, fortified structures, defensive fortification, bunkers, and field shelters within 30m from the burst; destroys brick and concrete buildings, light-armored and armored vehicles and field facilities  for storage of fuels and lubricants.

TNT equivalent, kgТNТ ≥190 Suspension Two-point suspension or single on the opposite Release height, m 900…12 000

Technical data:
Caliber, kg	250
Length without fuze, mm	1446
Weight of bomb without fuze, kg	260
Bomb diameter, mm	Ø 325
Stabilizer fin span, mm	410
Distance between CG and bomb front section, mm	545
Characteristic time, s	20,92/12
Weight of thermobaric mixture, kg	85
Shock wave radius, m	to 40
Fuze	AVU-ETM, AVU-ET
Packing:
Wooden crate:
Overall dimensions, mm	1803 х Ø590
Volume, m3	0,49
Gross weight, kg	335
FUZE AVU-ETM
Weight, kg	1,92
Height, mm	210
Connecting thread diameter, mm	Ø 52
Detonator weight, g	60
Fuze actuation time according to mode, s	Mode М – super quick Mode МЗ – 0,01…0,04 Mode СЗ – 0,06…0,09
	Attack mode – 10…14,5
Fuze arming delay setting, s	Attack mode – 1,4…2,4 Mode П – 3,5…5,5
	Mode М or МЗ or СЗ  – 10…13,5
Fuze arming time, s	1,4…13,5
Packing:
–  4 fuzes packed in an airtight metal box.
–  4 metal boxes packed in one wooden box.
Wooden box overall dimensions, mm	644 х 610 х 175
Volume, m3	0,07
Gross weight, kg	52