BED TESTING AIRCRAFT GAS-TURBINE ENGINES Russian patent published in 2000 - IPC

FIELD: testing equipment. SUBSTANCE: bed includes valves, adjustment fittings and instrumentation. Bed is equipped with oil tank installed in position turned through 180 degrees with reference to oil tank of tested engine and two three-way cocks to simulate work of oil system under conditions of negative accelerations and inverted flight. In one cock inlet communicates with pumping-out line of tested engine and two outlets communicate with lines of discharge of oil into oil tanks of tested engine and inverted flight. In the other cock two inlets communicate with lines of intake of oil from both oil tanks and outlet communicates with line feeding oil to tested engine. Air and hydraulic spaces of oil tanks intercommunicate.. Proposed design of bed makes it possible to expand range of testing of engines by way of simulation of work of oil system characteristic of inverted flight or flight under negative acceleration. EFFECT: expanded range of testing of aircraft gas-turbine engines. 1 dwg