(19)
(11) EP 0 097 605 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
10.10.1984 Bulletin 1984/41

(43) Date of publication A2:
04.01.1984 Bulletin 1984/01

(21) Application number: 83630094

(22) Date of filing: 02.06.1983
(84) Designated Contracting States:
CH DE FR GB IT LI SE

(30) Priority: 21.06.1982 US 390014

(71) Applicant: ELLIOTT TURBOMACHINERY COMPANY, INC.
 ()

(72) Inventors:
  • Miller, Arthur James
     ()
  • Elliott, Thomas J.
     ()

   


(54) High speed supersonic impulse turbine


(57) The buckets (20) of a turbine wheel (10) are formed as a series of equally spaced, overlapping portions of a cylinder in the grooved rim of a wheel forging. As a result of this construction, the leading edge of the buckets (20) is eliminated and is therefore not subject to 90° erosion. Additionally, the resulting bucket profiles result in very low impingement angles for moisture droplets or particulates which further minimizes low angle erosion.






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