公开(公告)号：CA2191231C

公开(公告)日：2005-04-12

申请号：CA2191231

申请日：1995-05-02

Applicant: UNITED TECHNOLOGIES CORP SIKOR

Inventor： KISH JULES G

IPC: F16H57/08 ,  B64C27/14 ,  F16H1/28 ,  F16H1/46

Abstract: A stacked compound planetary gear (10) train for an upgraded powertrain syst em for a helicopter that provides an increased reduction ratio to accommodate the increased horsepower output of the augmented powerp lant system (102A, 102B) while concomitantly providing a baseline RPM output to the main rotor shaft (106). The stacked compound pl anetary gear train (10) includes a driving sun gear (12) , a set N of primary planetary pinions (14), a plurality of secondary planetar y pinions (16), a compound drive shaft (18) supporting e ach respective primary (14) and secondary (16) planetary pinion combination, a f ixed ring gear (20) interacting with the secondary plane tary pinions (16), and a planetary carrier assembly (22) disposed in rotatable co mbination with the compound drive shafts (18) and operat ive to provide the output of the stacked compound planetary gear train (10) to the main rotor shaft (106) of the helicopter. The set N of p rimary planetary pinions (14) includes a plurality N/2 of upper primary planetary p inions (14U) and a plurality N/2 of lower primary planet ary pinions (14L). The upper and lower primary planetary pinions (14U, 14L) are disposed in a staggered, biplanar relationship wherein e ach upper primary planetary pinion (14U) overlaps the immediately adjacent lower primary planetary pinions (14L).

公开(公告)号：CA2193653C

公开(公告)日：2006-03-21

申请号：CA2193653

申请日：1995-05-30

Applicant: UNITED TECHNOLOGIES CORP SIKOR

Inventor： KISH JULES G ,  SAMMATARO STEPHEN R ,  ISABELLE CHARLES J

IPC: F16H57/04 ,  B64C27/12 ,  F16N7/18 ,  F16N7/40

Abstract: A self-scavenging, hybrid lubrication subsystem for a main transmission gearbox includes a sump that is fabricated as an integral structural extension of the gearbox so that the dynamic fluid level of the lubricating medium in the sump is a predetermined distance above the bottom (18) of the gearbox. The radial discontinuity between the cylindrical (22) and throat segments (26) in combination define a nozzle inlet (28) that is operative to direct outflow of the lubricating medium collected in the bottom of the gearbox to another sump with higher fluid level by means of a nozzle (60). The interaction between the peripheral surface of the rotating annular planetary carrier plate and the structurally-modified side wall of the gearbox exerts a viscous pumping action on the lubricating medium in the flow channels causing the lubricating medium to flow therethrough and being transported through the nozzle (60) to a higher level.

公开(公告)号：CA2191231A1

公开(公告)日：1995-12-07

申请号：CA2191231

申请日：1995-05-02

Applicant: UNITED TECHNOLOGIES CORP SIKOR

Inventor： KISH JULES G

IPC: F16H57/08 ,  B64C27/14 ,  F16H1/28 ,  F16H1/46

Abstract: A stacked compound planetary gear (10) train for an upgraded powertrain system for a helicopter that provides an increased reduction ratio to accommodate the increased horsepower output of the augmented powerplant system (102A, 102B) while concomitantly providing a baseline RPM output to the main rotor shaft (106). The stacked compound planetary gear train (10) includes a driving sun gear (12), a set N of primary planetary pinions (14), a plurality of secondary planetary pinions (16), a compound drive shaft (18) supporting each respective primary (14) and secondary (16) planetary pinion combination, a fixed ring gear (20) interacting with the secondary planetary pinions (16), and a planetary carrier assembly (22) disposed in rotatable combination with the compound drive shafts (18) and operative to provide the output of the stacked compound planetary gear train (10) to the main rotor shaft (106) of the helicopter. The set N of primary planetary pinions (14) includes a plurality N/2 of upper primary planetary pinions (14U) and a plurality N/2 of lower primary planetary pinions (14L). The upper and lower primary planetary pinions (14U, 14L) are disposed in a staggered, biplanar relationship wherein each upper primary planetary pinion (14U) overlaps the immediately adjacent lower primary planetary pinions (14L).