US 12,441,463 B2
Transmission assembly for an aircraft capable of hovering
Gabriele Delvecchio, Samarate (IT); Marco Ernesto Tamborini, Samarate (IT); Paolo Pisani, Samarate (IT); Diego Scaltritti, Samarate (IT); and Lorenzo Alari, Samarate (IT)
Assigned to LEONARDO S.P.A., Rome (IT)
Appl. No. 18/846,406
Filed by LEONARDO S.P.A., Rome (IT)
PCT Filed Jan. 26, 2023, PCT No. PCT/IB2023/050657
§ 371(c)(1), (2) Date Sep. 12, 2024,
PCT Pub. No. WO2023/175403, PCT Pub. Date Sep. 21, 2023.
Claims priority of application No. 22161958 (EP), filed on Mar. 14, 2022.
Prior Publication US 2025/0206443 A1, Jun. 26, 2025
Int. Cl. B64C 27/14 (2006.01); F16H 57/04 (2010.01)
CPC B64C 27/14 (2013.01) [F16H 57/0435 (2013.01); F16H 57/0442 (2013.01)] 14 Claims
OG exemplary drawing
 
1. Transmission assembly for an aircraft capable of hovering, comprising:
a first and a second member;
support means adapted to support said first member movably with respect to said second member;
a primary lubrication circuit and an emergency lubrication circuit of said support means;
said primary lubrication circuit comprising a primary tank of a lubricating fluid and primary fluidic supply means for supplying said lubricating fluid to said support means;
said emergency lubrication circuit comprising an emergency tank fluidically connected to said primary tank; and auxiliary fluidic supply means of said lubricating fluid to said support means, comprising a nozzle;
wherein said auxiliary fluidic supply means further comprises a dosing device and a fluidic line fluidically connecting said emergency tank with said dosing device;
said dosing device comprising a passage for said lubricating fluid from said fluidic line to said nozzle;
said passage comprising a plurality of concentrated pressure drop sections of said lubricating fluid; said concentrated pressure drop sections being distinct and spaced apart from each other.