Object Title

Gun - 155 mm Field Howitzer 70 (FH-70)

Gun - 155 mm Field Howitzer 70 (FH-70)

Object Number

XIX.984

Provenance

Unknown

Physical Description

The elevating mass is made up of the ordnance, cradle with integrated recoil system, and the loading mechanism. The ordnance comprises a monobloc barrel fitted with a double-baffle muzzle brake, a breech mechanism that includes a semi-automatic wedge breech, automatic tube loader with an 11 tube capacity, spent tube ejection and an energency firing mechanism. The cradle, which carries the ordnance on slides, includes the recoil systemwhich consists of a buffer with high-angle cut-off gear and a recuperator. The mechanical main firing system, which is independent of elevation, is carried through one of the cradle trunnions. The semi-automatic loading system operates at all elevations and raverses and consists of a loading tray which aligns the round behind the breech ring. The carriage is split trail, of lightweight construction with saddle, split trails, self-digging spades, main and trail wheels which are operated hydraulically, a soleplate and a quickly detachable auxilliary power unit (APU). When travelling the barrel is rotated through 180 degrees and clamped between the trails as it is currently presented. The APU is housed in a space frame attached to the forward part of the carriage and consists of a commercial Volswagen 1800 cc engine with a gearbox, differential, batteries and an hydraulic pump. In APU mode the FH-70 can attain speeds of up to 16 km/h and dealing with slopes of up to 34%. When it is towed it can ford to a depth of 1.5 m and in APU mode 0.75 m.The APU provides the power for all the units functions but in the event of its failure power can be proivided by a hand pump. The main wheels are hydraulically suspended on swinging arms attached to the carriage body and are cushioned by hydraulic accumulators. Similar suspension elements are used for raising and lowering the trail wheels.

Materials

Dimensions

BarrelLength6022 mm

Calibre

155 mm

Inscriptions and Marks

Maker's mark
ISRI FRANCE TEL (88) 80 46 00 MERKWILLER PECHELBRONN
Rubber seat cover
Embossed
Number
SFF 142
Vehicle rear
Plate for UK road use
Plate
VICKERS LIMITED TITLE SADDLE NATO-STOCK 1025-99-965-8840 SET NO. 133 MAN FD JANUARY 1979
Recoil system
Inscribed
Plate
VICKERS LIMITED TITLE TRAIL L.H. NATO-STOCK NO.1025-99-965-4105 SET NO. 129 MAN FD FEB 1979
Trail
Inscribed

Associations

Notes

In the early 1960s West Germany, the United Kingdom and the USA agreed that they had a requirement for a new 155 mm Field Howitzer. West Germany and the USA wanted to replace their 155 mm M114 howitzers and the UK wished to replace their 5.5 inch Medium guns. In the end the USA did not favour an APU system so went on alone to develop their M198 and West Germany and the UK agreed on the joint development of the FH-70. The requirement was for a continuous high rate of fire with burst fire capability. High mobility with minimum effort for deployment. Increased range and a new family of ammunition. The UK was to be the project leader. The first six prototypes were completed between 1969/1970 and after accepting the Agreed Operational Characteristics Italy joined the collaborative project in 1970 as a full partner. The trilateral reposibilities were carriage, traversing gear, HE shell and propelling cartridge for the UK ; the ordnance, loading system, APU, suspension, sighting equipment, smoke and illuminating ammunition and propelling charges for West Germany and cradle, recoil system, sights bracket, elevating gear and arc, HE shell, smoke and illuminating ammunition and other propelling charges.