Accession Number : ADA183988

Title :   Lightweight Towed Howitzer Demonstrator. Phase 1 and Partial Phase 2. Volume D1. Part 2. Structural Analysis (Less Cradle and System).

Descriptive Note : Final rept. 20 Dec 85-13 Mar 87,

Corporate Author : FMC CORP MINNEAPOLIS MINN NORTHERN ORDNANCE DIV

Personal Author(s) : Rathe,Robert ; Anderson,Bart

PDF Url : ADA183988

Report Date : Apr 1987

Pagination or Media Count : 224

Abstract : The LTHD (Lightweight Towed Howitzer Demonstrator) was to be a 9,000 lb equivalent to the M198, transportable via Blackhawk helicopter, with reduced emplacement time using fewer personnel. The FMC design achieved weight reduction via a mortar-like configuration, composites structure, and hydraulic actuators. Recovery of power from the recoil system, in turn, facilitated crew reduction via hydraulic emplacement, four-way joystick tube lay, and power ramming. FM completed Concept Development (PH I) and two-thirds of Detailed Design (Ph II) prior to funds running out. Keywords: 155mm towed gun howitzer, advanced weapons, composite cradle, composite hydraulic actuators, composite trails, field artillery weapon, firing stability analysis, howitzers, hydraulic control valves with force feedback, hydraulic joystick control of gun direction, hydraulic inertial rammer, hydraulic opening breech, hydraulic primer autoloader, load out of battery howitzer, mortar howitzer, recoil energy recovery, recoil mechanism, metal matrix composites, titanium muzzle brake, titanium platform, titanium spade, titanium walking beams, thermal stability, towing stability analysis, unconventional weapons.

Descriptors :   *HOWITZERS, CONTROL STICKS, ADVANCED WEAPONS, ARTILLERY UNITS, AUTOMATIC, BREECH MECHANISMS, COMPOSITE MATERIALS, CONTROL, CREWS, DEMONSTRATIONS, EMPLACEMENT, ENERGY, FEEDBACK, FIELD ARMY, FORCE(MECHANICS), GUN DIRECTORS, HELICOPTERS, HOWITZERS, HYDRAULIC ACTUATORS, HYDRAULIC VALVES, HYDRAULICS, LIGHTWEIGHT, LOADERS, METAL MATRIX COMPOSITES, MORTARS, MUZZLE BRAKES, OPENING(PROCESS), PLATFORMS, POWER, PRIMERS, RECOIL, RECOIL MECHANISMS, RECOVERY, REDUCTION, SHOVELS, STABILITY, STRUCTURAL ANALYSIS, SUPPORTS, THERMAL STABILITY, TIME, TITANIUM, TOWED BODIES, TOWING, UNCONVENTIONAL WEAPONS, WEIGHT REDUCTION

Subject Categories : Guns

Distribution Statement : APPROVED FOR PUBLIC RELEASE