METHOD TO IMPROVE IGNITION IN TWO-FLOW TURBOJET ENGINE AFTERBURNER AND AFTERBURNER TO THIS END

摘要

FIELD: engines and pumps.;SUBSTANCE: proposed method, wherein "hot" central primary flow comes into afterburner from turbojet engine turbine along with external "cold" secondary flow, consists in that the ignition zones with ignition element is arranged in the area of secondary flow coming into afterburner and restricted by the flame stabilisation ring. Note here that a portion of primary flow is bled to be introduced into ignition zone to make the temperature therein exceeding that of secondary flow and, thus, to facilitate ignition. Flame stabilisation elements incorporate flame stabilisation ring that features, in fact C-like cross section, one of the ring segments adjoining ignition zone. Afterburner chamber comprises at least one feed channel with its one end connected, to feed a portion of primary flow into ignition zone, with inner surface of separating wall around the hole intended for bleeding aforesaid portion of primary air. Second end opens nearby flame stabilisation ring segment adjoining ignition zone.;EFFECT: improved ignition under unfavorable conditions.;9 cl, 5 dwg