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PORT SHAFT [4 records]

Record 1 2008-03-04

English

Subject field(s)
  • Pumps
  • Aircraft Propulsion Systems
CONT

Both gear-and gerotor-type pumps are used in the lubricating system of the turbine engine.... The Gerotor pump has two moving parts : an inner-toothed element meshing with an outer-toothed element. The inner element has one less tooth than the outer. The missing tooth provides a chamber to move the fluid from the intake to the discharge port. Both elements are mounted eccentrically to one another on the same shaft.

CONT

Pitot pumps are seldom used in gearbox lubrication systems, as it is more common to employ a positive displacement pump such as a gear pump or a gerotor type pump.

OBS

gerotor: A gear-within-gear pump that consists of an inner gear with one less tooth than the outer gear.

French

Domaine(s)
  • Pompes
  • Propulsion des aéronefs
OBS

Les pompes à engrenages utilisent le profil combiné de deux roues dentées pour transvaser et augmenter la pression d'un fluide. Elles sont exclusivement utilisées avec des liquides.

OBS

pompe à engrenages emboîtés : terme uniformisé par le Comité d'uniformisation de la terminologie aéronautique (CUTA) - Maintenance.

Spanish

Save record 1

Record 2 1996-07-24

English

Subject field(s)
  • Plastics Manufacturing
CONT

A two-stage extruder screw is essentially two single-stage screws in series along one shaft. Volatiles are removed through a vent port in the barrel at the extraction section of the screw.

French

Domaine(s)
  • Plasturgie
CONT

vis à deux étages: [Pour améliorer le rendement de l'extrudeuse monovis], on est ainsi arrivé aux vis à deux étages avec la zone de décompression et le dégazage dans la partie centrale. Certains constructeurs ont augmenté le rendement de fusion dans la zone de compression par l'incorporation d'un deuxième filet uniquement le long de cette partie de la vis.

Key term(s)
  • boudineuse à étages
  • boudineuse à deux étages

Spanish

Save record 2

Record 3 1989-09-21

English

Subject field(s)
  • Propulsion of Water-Craft
  • Ship and Boat Parts

French

Domaine(s)
  • Propulsion des bateaux
  • Parties des bateaux

Spanish

Save record 3

Record 4 1986-06-25

English

Subject field(s)
  • Turbines
  • Geothermal Power Plants
CONT

Bladeless turbine... An assembly of plain metallic discs is mounted on a shaft, with narrow spaces between the discs. Geothermal fluid-hot water and/or steam-is admitted to the spaces between the discs at the periphery, and is directed to follow an inward spiral path towards a central exhaust port. The driving force is derived from frictional boundary layer drag between the fluid(s) and the disc surfaces. Such a machine would be very cheap to construct and to maintain : the discs could easily be dismantled, cleaned of chemical deposits and reassembled.

French

Domaine(s)
  • Turbines
  • Centrales géothermiques

Spanish

Save record 4

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