Aerodynamic drag reduction arrangement for use with high speed r

Details Aerodynamic drag reduction arrangement for use with high speed r Aerodynamic drag reduction arrangement for use with high speed r

1994-10-18

1997-06-10

Budd, Mark O.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 51, 310254, 310261, H02K 1700

Patent

active

056379420

ABSTRACT:
An aerodynamic drag reduction arrangement for use in a mechanical device that incorporates a high speed rotating element includes a boundary layer control member that defines a control surface. The control member is positioned adjacent the rotating element so as to optimize the clearance therebetween in order to effectively block axial flow and prevent radial pumping in order to minimize power consumption. The aerodynamic drag reduction arrangement is particularly adapted for use in electric rotors and scroll fluid devices.

REFERENCES:
patent: 3500092 (1970-03-01), Heilmann et al.
patent: 4514150 (1985-04-01), Hiraga et al.
patent: 4815951 (1989-03-01), Kakuda et al.
patent: 4927339 (1990-05-01), Riffe et al.
patent: 4936756 (1990-06-01), Shimizu et al.
patent: 5473211 (1995-12-01), Arkkio

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