(19)

(11)

EP 1 872 082 A1

(12)

(43) Date of publication: 02.01.2008 Bulletin 2008/01 (21) Application number: 06726784.9 (22) Date of filing: 18.04.2006

(51) International Patent Classification (IPC):  F42B 12/34(2006.01) F42B 8/02(2006.01) F42B 5/067(2006.01) (86) International application number: PCT/GB2006/001387 (87) International publication number: WO 2006/111719 (26.10.2006 Gazette 2006/43)

(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 LV MC NL PL PT RO SE SI SK TR (30) Priority: 16.04.2005 GB 0507719 (71) Applicant: THE SECRETARY OF STATE FOR DEFENCE Salisbury Wiltshire SP4 0JQ (GB)	(72) Inventor: THE SECRETARY OF STATE FOR DEFENCE Salisbury Wiltshire SP4 0JQ (GB) (74) Representative: Farnsworth, Alastair Graham  D/IPR Poplar 2 No. 2218 MoD Abbey Wood Bristol BS34 8JH Bristol BS34 8JH (GB)