Supersonic distributor for the inlet stage of a turbomachine

Details Supersonic distributor for the inlet stage of a turbomachine Supersonic distributor for the inlet stage of a turbomachine

1995-12-22

1997-10-14

Kwon, John T.

Rotary kinetic fluid motors or pumps

Means, disposition or arrangement for causing supersonic...

F01D 102

Patent

active

056765223

ABSTRACT:
The supersonic distributor for the inlet stage of a turbomachine comprises an outer case, a hub, and a set of peripheral blades disposed in a ring and attached to the hub to provide supersonic speed fluid passages between the blades to transform a flow at high pressure and low speed into a supersonic flow at low pressure. The blades are disposed radially in regular manner within a fluid feed torus. In a section developed on a line corresponding to a given radius, i.e. in a blade-to-blade plane, the blades define a profile in the form of a two-dimensional half-nozzle. This profile has a rectilinear upstream portion, a bulge defining a throat for accelerating the flow to a Mach number equal to 1, the throat being of section that varies with radius, and a downstream portion which terminates in a region of uniform flow at a trailing edge which may be truncated perpendicularly to the axis of rotation.

REFERENCES:
patent: 3156407 (1964-11-01), Bourquard
patent: 3333817 (1967-08-01), Rhomberg
patent: 4408957 (1983-10-01), Kurzrock et al.
patent: 4968216 (1990-11-01), Anderson et al.
patent: 5277549 (1994-01-01), Chen et al.
"Thermische Turbomaschinen," Walter Traupel, Erster Band Thermodynamish-stromungstechnische Berechnung, Berlin, pp. 108-109; 305; 333-335.

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