All mortar bombs
The illuminating group covers twelve line items in 60 mm, 81/82 mm and 120 mm. Designation families are M01, M87P1 and Mk15 in 120 mm; M08, M67, M67P2, M91 and Mk10 in 60 mm; and M09, M67, M95 and Mk11 in 81/82 mm. Every entry states the mass of the illuminating candle, composition or shell charge, a fuze designation, a light output in candela with a burning time, and a maximum range figure. All but the Mk15 are described as parachute bombs; the Mk15 states a 2 m2 canopy.
120 mm parachute illuminating mortar bomb with 1200 g candle giving 1000000 Cd for 60 s, ranging 400 m to 6600 m.
120 mm parachute illuminating mortar bomb giving 1000000 Cd for 60 s, ranging 400 m to 6000 m on five increment charges.
120 mm illuminating mortar bomb with electronic time fuze, 1230 g composition burning at 1000000 Cd for at least 60 s.
60 mm parachute illuminating mortar bomb giving 180000 Cd for 35 s, fired to 2450 m with a pyrotechnic time fuze.
60 mm parachute illuminating mortar bomb with 200 g candle giving 180000 Cd for 35 s, using the M80 ignition cartridge.
60 mm parachute illuminating mortar bomb with 200 g candle giving 180000 Cd for 35 s, using the M98 ignition cartridge.
Long-range 60 mm parachute illuminating mortar bomb with 300 g candle giving 350000 Cd for 30 s out to 4000 m.
Long-range 60 mm parachute illuminating mortar bomb, 350000 Cd for 30 s to 4000 m, using the M10 ignition cartridge.
81/82 mm parachute illuminating mortar bomb with 400 g candle giving 500000 Cd for 40 s, ranging 250 m to 3650 m.
81/82 mm parachute illuminating mortar bomb, 500000 Cd for 40 s, using the M11 waterproof ignition cartridge.
Extended-range 81/82 mm illuminating mortar bomb giving 750000 Cd for 40 s out to 5480 m on six increment charges.
Extended-range 81/82 mm illuminating mortar bomb, 750000 Cd for 40 s to 5480 m, using the M11 ignition cartridge.
An illuminating line in a tender annex carries the calibre, the length and mass with fuze, the mass of the illuminating candle, composition or shell charge, the fuze designation, the light output in candela with its burning time, the mean rate of descent where stated, and a maximum range figure against a named barrel length. All but the Mk15 add an increment charge arrangement, an ignition cartridge and a minimum range figure. Maximum mean operating pressure, operating temperature range and packaging close most entries.
Light output tracks candle or charge mass across the group: 200 g gives 180000 Cd for 35 s on the 60 mm M08, M67 and M67P2; 300 g gives 350000 Cd for 30 s on the 60 mm M91 and Mk10; 400 g gives 500000 Cd for 40 s on the 81/82 mm M09 and M67; and 700 g gives 750000 Cd for 40 s on the M95 and Mk11. Within a pair the ignition cartridge is often the only change, M80 against M98 on the 60 mm M67 and M67P2.
The 120 mm Mk15. It states the ETSQ M365 electronic time fuze with a time setting from 5 to 99.9 s, a 1230 g illuminating composition burning at least 60 s, a 2 m2 canopy and a lighting radius on the ground of 1050 m at 0.2 lx. The other eleven entries state pyrotechnical time fuzes of the TP series.
They run from 2450 m for the 60 mm M08, M67 and M67P2 to 6600 m for the 120 mm M01, with 3650 m on the 81/82 mm M09 and M67, 4000 m on the 60 mm M91 and Mk10, 5480 m on the M95 and Mk11, 5900 m on the Mk15 and 6000 m on the M87P1. Each figure is quoted against a stated barrel length.
