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G-5 155 mm Gun-Howitzer

South African designed and built 155mm gun-howitzer, capable of accurately firing a 100kg projectile at ranges up to 39,000 metres

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aa.WeaponBL 155mm G-5 Gun/Howitzer
abDescriptionThe G5 is a South African towed gun/howitzer of 155 mm calibre.
ac.TypeGun Howitzer
ad.Calibre155 mm (6.10 in)
ae.Overall LengthTravel: 9.1 m (29.85 ft) (barrel turned back)
af.Overall WidthTravel: 2.5 m (8.2 ft)
ag.OverallHeightTravel: 2.3 m (7.55 ft)
ai.Country of OriginSouth Africa
aj.AmmunitionHE: 45.5 kg with payload of 8.7 kg RDX/TNT; HE base bleed: 47 kg with payload of 8.7 kg RDX/TNT; Base-ejection smoke: 45.7 kg with a 10.9 kg payload of 4 smoke canisters in white, red, blue; Illumination: 45.2 kg - 1.65 million candela for at least 90 seconds: Red phosphorous: 47.7 kg 2ith a 7.6 kg payload; all projectiles of the ERFB type; The high-fragmentation steel casings of the HE projectiles have 23% more volume than other 155 mm projectiles and release between 3 032 and 4756 fragments. Their overall effectiveness is rounghly double that of other 155 mm HE ammunition. Can also use fire
ak.Effective Range (HE)Std HE: 30 600 m (33 465 yards); Base-bleed HE: 39 000 m (42 651 yards); Special V-LAP: 53 000 m (57 962 yards); Minimum Range: 3 000 m (3 281 yards)
al.Muzzle Velocity (HE) 
ba.Feed MechanismThe loading system comprises a swing-out tray which elevates with the gun and a manually controlled pneumatic rammer, allow reloading at any elevation.
bbTraverseBetween -3° and 15° elevation : 82° Between 15° and 55° elevation : 65° Between 55° and 75° elevation : 55 Maximum with safety stops : 65°
bc.Elevation-3° to +75°
bd.Rate of Fire3 rpm with maximum charge for 15 minutes, thereafter 2 rpm for 1 hour
be.SightsOptical-mechanical sight system mounted directly on the trunnion and is compensated for trunnion cant. An electronic gun display unit can be mounted on the gun and linked to the fire-control computer
bf.Muzzle Energy 
bg.Barrel Length6 975mm (22.88 ft) 45 cals
bh.Weight of Barrel 
bj.OperationManual with pneumatic rammer
bk.RecoilHydro-pneumatic; A mechanical/electrical gun monitor records Effective Full Charges (EFC) used, the recoil length, and number of rounds fired
bl.Firing Support Base 
bm.BreechCam-operated, interrupted-screw breech which opens automatically when the gun recoils, and closes semi-automatically when the pneumatic rammer has loaded the next round.
bn.Type of Breech Block 
boWeight of Breech Mechanism 
bp.TrailsTwo trails which can be spread to 84°, fitted with trail-lifting wheel-assemblies and self digging spades with four pre-set positions.
bq.Suspension SystemWalking-beam suspension
br.Type of Firing Mechanism 
bs.CarriageSplit-trail carriage with a walking-beam suspension; fitted with an air-cooled 57 kW auxiliary diesel motor which powers its systems and alllows it to be moved independently of its tractor.
bt.MobilityTowed by a 10-ton gun tractor - 90 km/h on road, 50 km/h off-road; includes a small auxiliary power unit to allow it to dig itself in and move short distances at up to 16 km/h; Air-transportable in
bu.Wheels4 x Drive wheels Tire size 1 400 x 22 @ 520 Kpa; 2 x Split trail wheels :Tire size 7.5 x 16; 47 @ 520 Kpa
bv.Ground Clearance310 mm
by.Wheel Span2.5 m (8.2 ft)
bz.LubricantsGun. Grease Molykote BR 2, SAE 10, SAE 90 and SAE 30 (diesel) oil and Tellus T46 hydraulic oil; Recoil System. Aeroshell Fluid 4/41 and nitrogen (nitrogen are also used for pneumatic loader)
ca.PropellantThe charge system consists of 6 zones optimised in 3 charges, giving maximum ranges of 17 900 m (zones 1 to 4), 25 300 m (zone 5) and 30 000 m (zone 6) respectively at sea level. Charge 3 gives a range of 39 000 m at sea level with base-bleed projectiles. Ranges of up to 45 000 m have been achieved at higher altitudes with base-bleed projectiles. The smaller number of charges than is usual in this category simplifies their use and logistic support.
cb.Detonation MechanismPD-M572: point-detonating diect-action fuse which gives either super-quick action on impact or a 0.5 second delay; SA-M804: proximity fuse which triggers detonation at between 4 and 8 m above the target - unaffected by radar-reflectivity - and has an impact back-up; SA-M805: electronic time fuse with a range of 1 to 200 seconds in increments of 0.1 seconds, for use with illuminating and smoke projectiles
co.In Service1978
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