FIELD: motors and pumps.
SUBSTANCE: group of inventions belongs to the field of aircraft engine building. In the TJE afterburner system operation method, the afterburn is launched by the ACAS commands with the fuel supply to the AC launch manifold directly from RP through the ABP launch assembly and further along the fuel path, including the NABR path section, which perform the required in the afterburner start-up mode fuel supply to the AC ignition launch manifold metering, and control the jet nozzle area critical section required change. From the NABR along the path, the afterburn fuel is supplied to the FABR and through the latter fuel enters the AC afterburn ignition and retention manifold. Manifold is made with two groups of sprayers. One group of sprayers is made in the form of injectors with end openings facing the AC pre-chamber carburetors. Another group of nozzles is made in the form of injectors with the jet fuel spraying conditional axis facing the combustion products flow from the CCS, mixed with air from the engine external circuit in the mixer. Transition to the forced mode performs the throttle control lever (TCL) movement to some angle αtcl. By sending the ACAS command through the NABR unit, opening the afterburn start valves are and enabling the fuel supply through the starting fuel path, including path sections in the NABR and FABR, and supplying fuel to the launch manifold. Performing ignition with the AC operation retention in the minimum afterburn mode. By the ACAS command opening the ABP pumping assembly input valve and by the impeller's impeller rotation increase pressure and directing the afterburn fuel to the main hydraulic path, passing the flow through the NABR and FABR, and sequentially supplying to the second and then to the third AC operation manifolds. Engine starts to operate on intermediate forced modes and further, moving the TCL, increasing the intermediate forced modes thrust by sequential increase in the afterburn fuel delivery intensity. Further TCL movement involves the AC first and fourth operational manifolds sequential switching on and, while continuing to increase the αtcl angle value, setting the required increase in the forced mode thrust increment. After the TCL angular positions exhaustion, switching the engine to full forced mode.
EFFECT: technical result achieved by group of inventions is increase in the efficiency by 2 % and more than double increase in the engine service life.
11 cl, 6 dwg
