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DRDO TOT ElectFuze81mm16062023

1. TBRL has developed a 4th generation electronic time and point detonating fuze for 81 mm mortar bombs that uses safer initiation methods compared to existing mechanical fuses. 2. The new fuze uses an air-driven turbo generator as a passive power source and contactless inductive programming to set the detonation time remotely in a safe manner. 3. It has built-in safety features like a hardware delay to ensure safe separation from the launch platform and functioning of the turbo generator for a period of time before detonation to improve safety during storage, transportation, and use.

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Samir Bagalkote
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31 views1 page

DRDO TOT ElectFuze81mm16062023

1. TBRL has developed a 4th generation electronic time and point detonating fuze for 81 mm mortar bombs that uses safer initiation methods compared to existing mechanical fuses. 2. The new fuze uses an air-driven turbo generator as a passive power source and contactless inductive programming to set the detonation time remotely in a safe manner. 3. It has built-in safety features like a hardware delay to ensure safe separation from the launch platform and functioning of the turbo generator for a period of time before detonation to improve safety during storage, transportation, and use.

Uploaded by

Samir Bagalkote
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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Electronic Fuze for 81 mm Mortar Bomb

A mortar is a weapon that fires explosive projectiles i.e. mortar bombs at low
velocities, short ranges, and high-arcing ballistic trajectories. The existing bomb
81mm Mortar HE uses point detonating (PD) fuze which are mechanical of nature
and are of second generation. These fuzes uses primary explosive based detonator
which are sensitive to heat, friction, shock and EMI/EMC. Moreover they uses
complex safety and aligning mechanism.
ESAD technology is being incorporated in fuzing systems for conventional
weapons to enhance the safety during storage, transportation and usage. Initiators
used are intrinsically safe as they use only comparatively insensitive secondary
explosives i.e. PETN, RDX etc. No use of primary explosives in the fuze avoids the
need of many complex moving/rotating devices in Safety & Arming mechanisms.
Hence TBRL had developed 4th generation Fuze for 81 mm mortar ammunition
based on the ESAD technology. The silent feature of the developed fuze are:

1. Electronic time (ET) and Point detonating (PD) Fuze.


2. Compatible with standard fuze well of 81mm Mortar.
3. Passive power source in the form of turbogenerator
4. Contactless inductive programmability of time
5. Barrel and post launch safety
6. Fail safe design

In the designed and developed fuze, Air driven turbo generator is used as
power source to initiate explosive train which also acts as safety device. Turbo
generator has to operate continuously for certain time period for functioning of fuze
thus ensuring barrel and launch platform safety. On receiving power, the control
electronics identifies the mode of operations (i.e. PD or ET) and functioning time
which was given to the fuze through contactless inductive fuze setter before the
launch of the bomb. A hardware delay is also provided to ensure safe separation of
ammunition for the launch point. This ensures safety of the firing crew. Commands
are issued by control electronics at the pre-set time and given to the firing unit. If the
mode of operation selected is PD, the control section senses the impact using
accelerometer and initiates the explosive train. Robust and reliable software is
developed to carry out the predefined functionality.
EBW detonator will be provided by TBRL at the prevailing cost at that time as
the same is not part of development and is a restricted technology.

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