Accession Number : AD0858383
Title : Feasibility Study of Non-Newtonian Gelled Fluids as A Shock- And Vibration-Isolation Medium
Descriptive Note : Final rept.
Corporate Author : WESTERN CO OF NORTH AMERICA RICHARDSON TX RESEARCH DIV
Personal Author(s) : Griffith, Edward D
PDF Url : AD0858383
Report Date : Apr 1969
Pagination or Media Count : 65
Abstract : A research and development program was conducted for the purpose of developing methods of improving the operating characteristics of passive vibration and shock isolators. To achieve such improvement, rheological properties of base fluids in viscous dampers were altered for alternating flow conditions. Newtonian flow properties of both water and MIL-H-5606A hydraulic fluid were changed with chemical additives to yield pseudoplastic flow properties having an initial yield strength at low shear rates and 'shear thinning' characteristics at high shear rates. Both analytical and dynamic situations were checked. Laboratory experiments included tests with a special test damper and with a Government-furnished (GFE) damper. These devices were both tested as a part of isolation systems.
Descriptors : *ARMY AIRCRAFT, *GELS, *VIBRATION ISOLATORS, DAMPING, FEASIBILITY STUDIES, HELICOPTER ENGINES, HYDRAULIC FLUIDS, RHEOLOGY, SHEAR STRESSES, VIBRATION, WATER
Subject Categories : Helicopters
Machinery and Tools
Distribution Statement : APPROVED FOR PUBLIC RELEASE