Accession Number : ADA189366


Title :   Hydraulic Diagnostics and Fault Isolation Test Program.


Descriptive Note : Final rept. Sep 84-Jul 86,


Corporate Author : GRUMMAN CORP BETHPAGE NY AIRCRAFT SYSTEMS DIV


Personal Author(s) : Marino, Paul


Full Text : http://www.dtic.mil/get-tr-doc/pdf?AD=ADA189366


Report Date : 13 Feb 1987


Pagination or Media Count : 59


Abstract : The hydraulic diagnostic and fault isolation test program investigated the feasibility of detecting and isolating a hydraulic failure in order to prevent loss of the entire system. Isolation valves were installed as a means of separating the subsystems from the main system. Various sensors were used to detect change in flow, temperature, pressure and reservoir level. The sensor information was fed to a microprocessor which compared the information to known parameters. In the event of failure detection, a signal was transmitted to the appropriate subsystem isolation valve which then shut off the subsystem from the main system.


Descriptors :   *DIAGNOSIS(GENERAL) , *FAULTS , *HYDRAULICS , *HYDRAULIC EQUIPMENT , DETECTION , DETECTORS , FAILURE , FEASIBILITY STUDIES , ISOLATION , LEVEL(QUANTITY) , RESERVOIRS , VALVES , FAILURE(MECHANICS) , HYDRAULIC VALVES , MICROPROCESSORS


Subject Categories : Hydraulic and Pneumatic Equipment


Distribution Statement : APPROVED FOR PUBLIC RELEASE