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FB 652 dual-safety mechanical time fuze

Companies & Organizations:

Italy

SIMMEL DIFESA SPA
Via Ariana Km 5,2
00034 Colleferro (Rome)


The FB 652 is a dual-safety mechanical time fuze designed to be used on 60mm, 81mmand 120mm illuminating mortar rounds.

 

The FB 652 is a derivative of the FB650 with the addition of a second safety feature for compliance with STANAG 4187. The fuze contains a higly accurate clockwork mechanism, which can be setted manually for a time delay between 6 and 54 seconds with steps of 0,5 seconds. A dual safety device requires the combination of 1 second time elapsed after launch, and the spin of an air-activated nose flywheel to provide armament. The fuze features a standard 1.5” thread in accordance to the figure 5 of Mil-Std-333.

 

PACKAGING
Fifty (50) fuzes per wooden container Twenty-four (24) wooden containers per pallet
UN Classification: 1.2D UN 0409

in service and production

Type

Mechanical fuze

Calibre

60mm, 81mm, 120mm ILL Mortar Bombs

Fuze mass (nominal)

210g

Fuze length (nominal)

120mm (overall 248mm)

Booster charge mass (nominal)

3g of Black powder

Power supply

Mechanical energy

 

Muzzle velocity (nominal)

Variable i.a.w. charges and calibres used

Functions

Time

Mechanical safety distance

1s

Minimum operating distance

6s

Operating temperature

-46°C to +63°C

Defense Products & Services: FB 652 dual-safety mechanical time fuze
Companies & Organizations: 
Defense Products & Services Sectors: Fuzes | Fuzes, components
Country: Italy
Description: FB 652 dual-safety mechanical time fuze
Source of Information: 

SIMMEL DIFESA SPA