Aircraft with low noise, such as during take-off and landing

Details Aircraft with low noise, such as during take-off and landing Aircraft with low noise, such as during take-off and landing

B - Operations, Transporting

64

C

B64C 3/10 (2006.01)

Patent

CA 2603824

The invention relates to an aircraft with low noise, such as during take-off and landing. According to the invention, the aircraft comprises: two wings (2, 3) which have a reverse sweep (.phi.) and which do not support an engine; a rear vertical tail unit consisting of at least two fins (5, 6) and forming a channel (8) together with the rear part (7) of the fuselage (4), which is disposed on the back of same; and at least one turboshaft engine (9, 10) which is disposed on the back of the fuselage (4), such that the gas streams generated by the turboshaft engine (9, 10) enter the channel (8) and such that the downstream noise of the engine (9, 10) is masked laterally and downwardly by said channel. The root sections (11, 12) of the wings (2, 3) are disposed close to the air inlet (15, 16) of the turboshaft engine (9, 10) such that the upstream noise generated thereby is masked laterally and downwardly by said wings (2, 3).

Selon l'invention, l'aéronef comporte : - deux ailes (2,3) présentant une flèche (~) inverse et ne portant aucun moteur ; - un empennage vertical arrière constitué d'au moins deux dérives (5, 6) et formant, avec la partie arrière (7) dudit fuselage (4), un canal (8) disposé sur le dos de celui-ci ; et - au moins un turbomoteur (9, 10) disposé sur le dos dudit fuselage (4) de façon que les flux de gaz engendrés par ledit turbomoteur (9, 10) pénètrent dans ledit canal (8) et que le bruit aval dudit turbomoteur (9, 10) soit masqué latéralement et vers le bas par ledit canal, les emplantures (1 1 , 12) desdites ailes (2, 3) étant disposées au voisinage de l'entrée d'air (15, 16) dudit turbomoteur (9, 10) de façon que le bruit amont engendré par celui-ci soit masqué latéralement et vers le bas par lesdites ailes (2, 3).

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