155 GH 52 APU

155 GH 52 APU
155 GH 52 APU
	155 K 98
Type	Gun-howitzer
Place of origin	Finland
Service history
In service	1998–
Used by	Finnish Army; Egyptian Army
Production history
Designer	Patria
Manufacturer	Patria; Abu Zaabal Engineering Industries (licensed production)
Unit cost	500,000 €
Produced	1998–2005
No. built	73+
Variants	155 GH 52; 155 GH 52 APU; 155 K 98; 155GH52-SP-T55
Specifications (155 K 98)
Mass	13,500 kg (29,800 lb) (without equipment); 14,580 kg (32,140 lb) (fully equipped)
Barrel length	8,060 mm (317 in) L/52
Crew	1+7
Shell	155 mm NATO, separate caseless charge bags
Shell weight	43 kg (95 lb) to; 47 kg (104 lb)
Caliber	155 millimetres (6.1 in)
Breech	Horizontal semi-automatic sliding block
Recoil	Hydro-pneumatic
Carriage	Split trail, sole plate, auxiliary power unit and hydraulics
Elevation	−5° to +70°
Traverse	±35° from centreline
Rate of fire	6–10 rounds/min; 3 rounds in 12 seconds
Muzzle velocity	over 900 m/s (3,000 ft/s)
Effective firing range	28 kilometres (17 mi) (standard ammunition); 40 kilometres (25 mi) (base bleed ammunition)
Maximum firing range	41 kilometres (25 mi)
Sights	Optical panoramic periscopic dial sight; Telescopic direct fire sight
Engine	Deutz; 78 kW (105 bhp)
Maximum speed	15 km/h (9.3 mph); 8 km/h (5.0 mph) (terrain)

The 155 GH 52 APU (which stands for 155 mm gun-howitzer, 52 calibers, auxiliary power unit), Finnish designation 155 K 98 (155 mm kenttäkanuuna 1998 or "155 mm field gun 1998"; FDF terminology does not recognise gun-howitzers), is a Finnish towed artillery piece developed in 1998. It is largely based on the 155 K 83 with some major enhancements. It can be moved on the field short distances with its own auxiliary diesel engine, which is used in all 56 units used by the Finnish defence forces, is a 78-kilowatt Deutz diesel engine. The Egyptian units are not equipped with the APU.

The 155 GH 52 is considered to be one of the most modern field artillery cannons to date and was originally manufactured by Oy Tampella AB industries (today a part of Patria, Patria Vammas Systems Oy). It has a high rate of fire (6 rounds per minute) and can fire all types of 155 mm ammunition.

^ "Patrian kanuunoissa vakavia ongelmia" (in Finnish). Yle. 30 October 2008. Archived from the original on 21 December 2018. Retrieved 18 December 2020.
^ ^a ^b ^c ^d ^e ^f ^g Toivonen, Vesa (2003). Tampellasta Patriaan: 70 vuotta suomalaista raskasta aseenvalmistusta – From Tampella to Patria: 70 years of Finnish heavy weapons production. Apali Oy. ISBN 952-5026-26-4.
^ ^a ^b ^c ^d ^e ^f Finnish Defence Forces equipment display: 155 K 98, at Rakuunamäki, Lappeenranta on Finnish Defence Forces Flag Day 4 June 2014.
^ ^a ^b "155K98" (in Finnish). Finnish Army. Archived from the original on 21 December 2018. Retrieved 18 December 2020.

[yle-1] "Patrian kanuunoissa vakavia ongelmia" (in Finnish). Yle. 30 October 2008. Archived from the original on 21 December 2018. Retrieved 18 December 2020.

[toivonen-2] ^ ^a ^b ^c ^d ^e ^f ^g Toivonen, Vesa (2003). Tampellasta Patriaan: 70 vuotta suomalaista raskasta aseenvalmistusta – From Tampella to Patria: 70 years of Finnish heavy weapons production. Apali Oy. ISBN 952-5026-26-4.

[lippujuhla2014-3] ^ ^a ^b ^c ^d ^e ^f Finnish Defence Forces equipment display: 155 K 98, at Rakuunamäki, Lappeenranta on Finnish Defence Forces Flag Day 4 June 2014.

[155k98-4] "155K98" (in Finnish). Finnish Army. Archived from the original on 21 December 2018. Retrieved 18 December 2020.

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