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:
The invention relates to a sound absorber (2) for an auxiliary engine of an aircraft comprising an inlet (46), an outlet (48), a housing (4), and a flow channel (6) which has a porous wall material and is arranged in the housing (4). An intermediate space is formed between the housing (4) and the flow channel (6). Said intermediate space is divided into outer cells (10-26) arranged around the flow channel (6) by way of one or more partitions (8). Thus, a very compact sound absorber having very good sound insulation is made possible. By dividing the outer cells (10-26) into outer areas and inner areas, adapting the shape of the sound absorber (2) to a rear section of the aircraft, and attaching a ring-shaped channel to the outlet (48), the sound insulation can be improved further.
摘要:
An auxiliary power unit intake duct for an aircraft, comprising an internal straight portion 1a, an internal first bend portion 1b and an internal second bend portion 1c, extending between an air inlet 2 and a plenum entry 3 of the auxiliary power unit, a plurality of acoustic guides vanes 4,5 located in the straight portion la of the intake duct 1, extending horizontally between opposite side portions of the straight portion 1a; and a plurality of curved aerodynamic guide vanes 6,7 located in the second bend portion 1c proximate to said plenum inlet 3, extending vertically between a top portion and a bottom portion of the second bend portion 1c, each of the curved aerodynamic guide vanes 6,7 being concentric with said bend curvature of the second bend portion 1c.
摘要:
An exhaust eductor system (110) includes a primary exhaust nozzle (112) configured to transport an active flow stream (120); and a mixing duct (114) at least partially surrounding the primary exhaust nozzle (112) and configured to transport a passive flow stream that is entrained by mixing with the active flow stream (120) from the primary exhaust nozzle (112). The mixing duct (114) has an interior, and a baffle (126) on the interior of the mixing duct (114) is configured to prevent the mixed flow streams from exiting the mixing duct (114).
摘要:
A pre-hung air inlet door assembly (40) comprises an inlet door (41), a door box frame (42), and an actuation system (43). The door box frame is fastened to the support structure of an aircraft. The inlet door is operationally connected to the actuation system. The entire pre-hung air inlet door assembly can be preassembled for quick installation into an aircraft. Pre-assembly eliminates trimming operations and rigging and misalignment issues. The pivot shafts (46,47) and bearing housings (44,45) of the pre-hung air inlet door assembly can be accessed from outside the aircraft when repairs and/or replacement components are needed.
摘要:
A fire protection apparatus (90, 92) for an oil cooler (26) in an aircraft auxiliary power unit compartment (10) adapted to at least partially cover the oil cooler to thereby at least partially block flames from directly impinging the oil cooler in the event of a fire in the compartment. An associated means and method are also disclosed.