Accession Number : AD0860439
Title : Synchronization of Multipoint Hoists
Descriptive Note : Final rept.
Corporate Author : UNITED TECHNOLOGIES CORP STRATFORD CT SIKORSKY AIRCRAFT DIV
Personal Author(s) : Clarke, Dennis P ; O'Connor, Sean J ; Karas, George R
PDF Url : AD0860439
Report Date : Jul 1969
Pagination or Media Count : 83
Abstract : A contractor has conceived an electrohydraulic feedback system that will provide position synchronization of four aircraft cargo hoists. To demonstrate the feasibility of the concept and to verify the method of analysis, the contractor has designed, fabricated, and tested a model four-point synchronized hoist system. Test results show that the feedback system concept provides adequate synchronization control; i.e., the platform pitch and roll angles do not exceed plus or minus 5. The analysis derived to predict performance of the feedback system was shown to be valid.
Descriptors : *HELICOPTER HOISTS, CONTROL SYSTEMS, ERRORS, FEEDBACK, HYDRAULIC SERVOMECHANISMS, LOAD DISTRIBUTION, MECHANICAL CABLES, OSCILLATION, PREDICTIONS, REACTION KINETICS, RESCUES, RESPONSE, SUSPENSION DEVICES, SYNCHROS
Subject Categories : Helicopters
Hydraulic and Pneumatic Equipment
Distribution Statement : APPROVED FOR PUBLIC RELEASE