A passive armor assembly including an armor member made of a brittle material

(19)

(11)

EP 1 605 224 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	21.12.2005 Bulletin 2005/51

(43)	Date of publication A2:
	14.12.2005 Bulletin 2005/50

(21)	Application number: 05011316.6

(22)	Date of filing: 25.05.2005

(51)	International Patent Classification (IPC)⁷: F41H 5/04

(84)	Designated Contracting States:
	AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR
	Designated Extension States:
	AL BA HR LV MK YU

(30)

Priority:

03.06.2004 IL 16235104

(71)	Applicant: Rafael Armament Development Authority Ltd.
	Haifa 31021 (IL)

(72)	Inventors:
	Yeshurun, Yehoshua Haifa 34403 (IL) Ashuach, Yechezkel Ness Ziyyona 740046 (IL) Rosenberg, Zvi Haifa 34384 (IL)

(74)	Representative: Patentanwälte Westphal, Mussgnug & Partner
	Am Riettor 5 78048 Villingen-Schwenningen 78048 Villingen-Schwenningen (DE)

(54)	A passive armor assembly including an armor member made of a brittle material

(57) Disclosed is a passive armor assembly for protecting a body disposed behind it from an impact of a long rod penetrator (hereinafter LRP). The armor assembly includes an armor surface (8) that is capable of exerting asymmetric forces on the oncoming LRP and an armor member (12) being disposed behind the armor surface. The armor member is made of a high compression strength, low density, brittle material, and its thickness along the direction of the impact exceeds the length of the LRP. Preferably, the thickness is at least 1.5 the length of the LRP. In a preferred embodiment the armor member is made of a material exhibiting the combination of fracture toughness smaller than 3MPam^½, density of less than 2g/cc, and compression strength of from 10² to 10³ MPa.

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