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IMEMTS 2018 – Heavy Torpedo IM Assessment
Heavyweight Torpedo warhead
IM assessment
R.FOUGEYOLLAS
1
, D.COURRILLAUD
1
, L.CHAFFOIS
2
, P. CHABIN
2
1
NAVAL GROUP UNDERWATER WEAPONS BUSINESS UNIT, SAINT-TROPEZ (FRANCE)
2
EURENCO, 1928 route d'Avignon, CS 90109 Sorgues – 84275 VEDENE, FRANCE
ABSTRACT
Thanks to its stealth, range and fire power, the F21 heavyweight torpedo gives client navies
an unrivalled tactical advantage over all threat. Exploiting a range of innovations and
advances in torpedo technology, a single F21 can knock out any surface combatant or
submarine. The high energy density primary battery offers both high maximum speed and
extended range while the new-generation acoustic head guarantees improved search
efficiency from very shallow to deep waters. Fully digitalized technologies result in improved
signal processing and enhanced overall performance.
The F21 complies fully with the demanding safety requirements applicable to nuclear-
powered submarines. Regarding to the warhead insensitivity, this high requirement level is
reached because the ammunition embeds live improved IM components such as an
RDX/Al/AP cast cure substance for the main charge and thermal igniter. Moreover, its
specific internal rubber based Thermal Protection gives some additional surviving
characteristics against thermal threat such as external fire.
IM assessment was performed according to a rigorous process. This paper will describe the
design principles and focus on results obtained against full scale tests such as shaped
charge test.
