The Mortar Company.

81 MM SYSTEMM8 | 81 MM MORTAR81 MM AMMUNITION FAMILY

Hirtenberger Defence Europe GmbHLeobersdorfer Strasse 31-332552 Hirtenberg / AustriaPhone: +43 2256 811 84-0Fax: +43 2256 818 07E-Mail: sales.hds@hirtenberger.com

Hirtenberger Defence International Ltd.Craydown Lane / Middle WallopStockbridge SO20 8DX / United KingdomE-Mail: sales.hds@hirtenberger.com

hds.hirtenberger.com

Vol. 11 / 2017 | subject to change

• Observer Locations • Firing planning function• Variable correction option• Simultaniuse fire mission

• Control multiple weapons • Ammunition stores• Surveys calculation options• Firing planning functions

• Internal GPS• Long Battery • Ruggadised• Touch screen• Mouse backup and hotkey

ROLE: FORWARD OBSERVER COMPUTER

ROLE: MORTAR COMPUTER

FEATURES: MILITARY HANDHELD COMPUTER

Weapon Position Data Weapon Aiming Data Integrated Mapping Satellite ViewMain Menu

FIRE CONTROL SYSTEMTHE COMPREHENSIVE 81 MM SYSTEMDeveloped by Hirtenberger Defence Systems (HDS), the rugged and reliable M8 comprises an 81 mm long-range weapon available in different barrel lengths, an entire range of ammunition, auxiliary field equipment, sighting systems and a fully digital fire-control system containing all ballistic data. The precise engineering and carefully coordinated development of the M8 facilitates high degrees of effectiveness in challenging environments, optimising performance at all times.

HDS ammunition is made to the highest quality and safety standards, and includes high-explosive, smoke variants (white phosphorous, red phosphorous and titanium tetrachloride), visible and infrared illumination, as well as training ammunition.

The newly designed asymmetrical bipod carries the shock absorber, the barrel clamp and the elevating, traverse and cross levelling gear. The patented elevating gear together withthe other adjusting gears constitute an optimal ergonomic solution.The results are: Easy handling during assembly and aiming, easy training of personnel and trouble-free operation onall types of terrain. All gears are sealed against dust and water.

The forged high-strength special steel barrel with smooth, close-tolerance bore can be provided with specially de- signed ribs for reinforcement and improved heat dissipation, this allows much higher firing stresses. The breech plug, which is screwed into the barrel, has a rigidly mounted firing pin. If necessary, the latter can be easily removed from the assembled mortar.

BIPOD BARREL AND BREECH CAP

The Mortar Sight A06 is used for the indirect aiming of M8 mortar in azimuth and elevation and it consists of a mechanical aiming device with precise elevation and azimuth adjustment means by worm gear for angle setting and with an optical sighting telescope. The coarse and fine azimuth scales can be adjusted, clamped and disengaged for a fast adjustment. Vial levels are mounted on the housing and the optical sighing telescope which can be be tilted + / - 25 ° and also rolled axially 90 °.

For night operation, the A06 is equipped with an electrical illumination system based on LED-tech-nology which provides illumination of the scales, bubbles and the reticle powered by 2 standard batteries 1.5 V (Type AA).

SIGHTING SYSTEM

81 MM HE Mk4SMK-WP

Mk4SMK-TTC

Mk4ILL-VISMk5

ILL-IRMk5

SMK-RPMk5

PRACTISEMk4

Lenght 485 mm 485 mm 485 mm 635 mm 635 mm 635 mm 485 mm

Weight 4.16 kg 4.16 kg 4.16 kg 3.8 kg 3.8 kg 3.8 kg 4.16 kg

81 MM MORTAR AMMUNITION

PYROTECHNIC AMMUNITION WITH IDENTICAL BALLISTICS

FillerRed phosphorusTerminal effectSmoke generationSmoke duration: 120 sec.

Terminal effectIllumination duration: 40 sec.Descent rate: 5 m / sHigh infrared emission,low visible emission.

81 MM SMK-RP Mk5

81 MM ILL-IR Mk5

Terminal effectLuminosity: 950 000 cdIllumination duration: 38 sec.Descent rate: 5 m / s

81 MM ILL-VIS Mk5

HE Mk4 / PRACTICE Mk4 SMK-WP Mk4 / SMK-TTC Mk4

MAX. RANGE 1 165 MM BARREL

MAX. RANGE 1 365 MM BARREL

GAS PRESSURE MAX.

Charge 0Charge 4Charge 5Charge 6Charge 7

562 m4 274 m5 090 m5 865 m

–

591 m4 597 m5 334 m6 148 m6 669 m

15 MPa50 MPa70 MPa85 MPa90 MPa

ILL-VIS Mk5 / ILL-IR Mk5 SMK-RP Mk5 EJECTION HEIGHT 350 M

Charge 1Charge 4Charge 5Charge 6

1 425 m4 090 m4 791 m5 263 m

1 521 m4 254 m4 999 m5 593 m

25 MPa50 MPa70 MPa85 MPa

AMMUNITION WITH „HE“ TYPE BALLISTICS

FillerInertTerminal effectImpact signature(only with life fuze).

FillerTNTTerminal effectNumber of fragments > 5 300 (> 1 250 fragments with m > 0.32 g).

Terminal effectIncreased lethality by more than 90 %Number of Fragments 4 772 (2 837 fragments with m > 0.32 g).

Qualified in NATO FillerTNTTerminal effectNumber of fragments > 5 300 (> 1 250 fragments with m > 0.32 g).

FillerWhite phosphorusTerminal effectScreening by fast smoke generation.

FillerTitanium tetrachlorideTerminal effectExtraordinary fast generation of cold smoke.

81 MM PRACTICE Mk4

81 MM HE-TNT Mk4 PD

81 MM HE CONFRAG® Mk4

81 MM HE-TNT Mk4 PROX.

81 MM SMK-WP Mk4

81 MM SMK-TTC Mk4

• Optimised aerodynamic shape • Improved external ballistics • Increased range• Closed design • No entrance of hot gases• Body material • Special cast iron • High number of fragments • Increased combat efficiency

• No corrosion• No break-up during firing• Weapon cannot be damaged• Improved storage capability

• Bomb removal tool

• Watertight aluminium design • Stable ballistics • Improved storage capability • Reliable function in wet environment

SHELL BODY

SPECIAL

IGNITION CARTRIDGE

• Charge container with bent rim • Increased mechanical stability • No unintended loss during handling • Watertight design • Stable ballistics • Improved storage capability • Reliable function in wet conditions • Latest celluloid composition • Improved combustion characteristics • No sticky residues • No sticking bombs during firing• Latest propellant composition • Improved energy • Improved muzzle velocity • Reduced gas pressure • Greater range capability

PROPULSION SYSTEMS

MONOBLOC DESIGN OF FIN TAI

The base plate is drop-forged and madeof a high-strength aluminium alloy with reinforcing ribs. The design combines low weight with high stability so that the base plate is able to withstand highest impact stresses.

Additional at the bipod two shock absorbers are re-ducing the recoil of the weapons and maintaining the stability of the complete weapon system also in rough terrain of military operations. The reduced recoil also enable the long-range accuracy at a maximum range up to 6 000 meters.

BASE PLATE

SHOCK ABSORBER

Variouse availible fuzes Spindle shaped design Canister shaped design *with Hirtenberger HE Mk4Due to continuous technical improvement this product is subject to modification

TECHNICAL DATA

Weights

Dimensions

CalibreMax. range* Max. rate of fireMax. operating gas pressure

TotalBarrelBipodBase plate

M8 R – 1 165

81 mm5 865 m30 / min90 MPa

M8 R – 1 365

81 mm6 669 m30 / min

100 MPa

38.6 kg13.3 kg12.8 kg12.5 kg

40.2 kg14.9 kg12.8 kg12.5 kg

Length of barrel (overall)Ballistic length Diameter of base plate

1 280 mm1 165 mm

547 mm

1 482 mm1 365 mm

547 mm