Accession Number : AD0692139

Title :   HYDRAULIC UNIT WITH CYCLOGRAM CONTROL FOR SCAVENGING AIRCRAFT HYDRAULIC SYSTEMS,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Privalov,A. I. ; Ilichev,V. V. ; Kovalev,N. I. ; Novikov,E. D. ; Semikov,V. S.

Report Date : 04 JUN 1969

Pagination or Media Count : 7

Abstract : The patent involves a hydraulic unit with cyclogram control for breaking in aircraft hydraulic systems, consisting of a hydraulic pump located on a hydraulic tank, intake and pressure lines with filters, return valves, measuring devices, on-board sockets, a radiator, and a hydraulic accumulator connected to the intake line. To automate the measuring device of the hydraulic system in the aircraft being inspected, after the hydraulic system has been broken in at a given pressure, and to automatically replace the working fluid while removing air from the aircraft's hydraulic system, the unit is equipped with a discharge line connected through an electromagnetic valve to the intake line and through a safety valve to the hydraulic tank; an intermediate pressure line is connected through the measuring device and the electromagnetic valve to the compressor line, and through a throttle to the intake line. At this point in the intake line are placed low and high-pressure indicators, which the booster pump switches on and off when certain pressure limits are attained. (Author)

Descriptors :   (*AIRCRAFT, HYDRAULIC EQUIPMENT), (*HYDRAULIC EQUIPMENT, FILLING), HYDRAULIC FLUIDS, PURGING, AUTOMATIC, HYDRAULIC ACCUMULATORS, CHECK VALVES, SAFETY VALVES, PRESSURE, CONTROL SYSTEMS, PATENTS, USSR

Subject Categories : Aircraft
      Hydraulic and Pneumatic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE