摘要:
An intake duct assembly for an auxiliary power unit system is provided. A first inlet adapter (210) includes at least one hole (332) through the duct wall. A fire containment apparatus (230) forms a first passage to direct intake air between exterior wall of the aircraft and the enclosure. An inner duct (500) mounted on the first inlet adapter (210) at a first position downstream of the at least one hole and mounted on a second inlet adapter (220). An outer sheath (550) is mounted on the first inlet adapter (210) at a second position upstream of the at least one hole and mounted on the second inlet adapter (220). The outer sheath (550) circumscribes the inner duct (500) to form at least a portion of a barrier annulus between the inner duct (500) and outer sheath (550) in fluid communication with the first passage via the at least one hole in the first inlet adapter (210).
摘要:
An aircraft auxiliary power and thrust unit includes at least one blade mounted to a fan shaft which are mounted to a tail cone of the aircraft and rotatable relative to the tail cone. Also included is an air intake assembly which includes an opening defined by the tail cone and a channel in fluid communication with the opening and the at least one blade. A first drive shaft positioned to extend in a direction transverse to the fan shaft and engagageable to rotate with the fan shaft and first drive shaft engaged and the first drive shaft engagageable to a second drive shaft positioned transverse to the first drive shaft such that the second drive shaft rotates with the first drive shaft with the first and second drive shafts engaged. The second drive shaft is positioned outside of the channel of the air intake.
摘要:
An air duct arrangement (58) for an aircraft (40). The arrangement (58) comprises an environmental control system (ECS) (50). The ECS (50) comprises an air inlet (60) arranged to ingest a low velocity portion of a boundary layer flow adjacent the aircraft fuselage (44), and to deliver a flow of air to an environmental control system air intake (66). The arrangement (58) further comprises an ejector (70) arranged to receive an ECS exhaust (76), and boundary layer air from an aft region of the aircraft (40), and to exhaust air to the ambient airstream at an aft portion of the aircraft (40).
摘要:
Ein Schalldämpfer (2) für ein Hilfstriebwerk eines Flugzeugs weist einen Einlass (46), einen Auslass (48), ein Gehäuse (4) und einen in dem Gehäuse () angeordneten Strömungskanal (6) mit einem porösen Wandmaterial auf. Zwischen dem Gehäuse (4) und dem Strömungskanal (6) ist ein Zwischenraum gebildet ist, der mittels einer oder mehrerer Partitionen (8) in um den Strömungskanal (6) herum angeordnete äußere Zellen (10-26) unterteilt ist. Dadurch wird ein sehr kompakter Schalldämpfer mit einer sehr guten Schalldämmung ermöglicht. Durch Unterteilen der äußeren Zellen (10-26) in Außenbereiche und Innenbereiche, eine Formanpassung des Schalldämpfers (2) an eine Hecksektion des Flugzeugs sowie durch Anbringen eines ringförmigen Kanals an dem Auslass (48) kann die Schalldämpfung weiter verbessert werden.
摘要:
A system (10) for providing air (12) to a compressor (16) of an auxiliary gas turbine engine (18) of an aircraft (20). A system turbine (26) has an inlet (30) adapted to receive compressed air (34) from the aircraft. A system compressor (28) is mechanically coupled to the system turbine and has an inlet (36) adapted to receive atmospheric air (40). The outlets of the system turbine and the system compressor arc fluidly connectable to the inlet of the compressor of the auxiliary gas turbine engine.
摘要:
Diverter assemblies 12 for aircraft air inlets 10 include a diverter structure at least substantially surrounding the air inlet, and a fairing 20 mounted to an upper edge of the diverter structure forwardly of the air inlet.
摘要:
Engine inlet flap (K) for mounting on the housing of an air inlet or air inlet duct of an engine of an aircraft, having a first end (E1) and a second end (E2) arranged in opposition thereto at a distance therefrom in the longitudinal direction (L) of the inlet flap, wherein the longitudinal direction (L) in the given installation is aligned against the flow direction (S) of the air flowing into the engine. The inlet flap (K) comprises an inlet flap base body (1) with a connector device for a jointed connector for jointed connection of the inlet flap base body (1) to the housing of the air inlet or air inlet duct, with a rotational axis (A) running along the second end (E2), an inlet flap extension piece (2) structurally integrated with the inlet flap base body (1), with a first and a second lateral piece (5, 6), which extends from the inlet flap base body (1) on the two opposed lateral edges (5, 6) of the inlet flap (K) running in the longitudinal direction (L) with a number of transverse struts (11) or longitudinal struts, arranged in the leading region of the engine inlet flap (K).
摘要:
An auxiliary power unit (APU) (100) includes a controller that controls the position of an APU inlet door (138), and thus ram air flow to the APU (100), to ensure optimal starting conditions are attained and maintained in the APU (100) during APU startup operations. The controller receives a signal representative of an APU operational parameter (152) and, in response, to supplies APU inlet door (138) position commands. An APU inlet door actuator (142) is coupled to the APU inlet door (138) and, in response to the APU inlet door (138) position commands, moves the APU inlet door (138) to the commanded position.