Pre-swirl inlet guide vanes for compressor

Details Pre-swirl inlet guide vanes for compressor Pre-swirl inlet guide vanes for compressor

1981-08-18

1984-01-31

Marcus, Stephen

Rotary kinetic fluid motors or pumps

Selectively adjustable vane or working fluid control means

Upstream of runner

F01D 1716

Patent

active

044287143

ABSTRACT:
Two sets of guide vanes are positioned in the combustion air flow path in the inlet duct of a rotary compressor of a gas turbine engine for controllably varying the air mass flow rate according to turbine load conditions. The upstream set which provides a fixed, initial degree of swirl relative to compressor rotational direction and axis and the controllably moveable downstream set which provides a final degree of swirl cooperate to provide controllable swirl over the range of about 0.degree. to 32.degree. in the inlet air incident upon the turbine blades. The two guide vane sets are separated by a distance sufficient to allow turbulence induced by the first set to fully decay before the second set is encountered.

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patent: 3992128 (1976-11-01), Lunsford et al.
patent: 4053256 (1977-10-01), Hertel

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