United Technologies Corporation

Sean D J Blake

Matthew D Teicholz

William G Tempelman

Glenn D Bartkowski

Paul H Spiesman

John R Gendron

Kerri A Wojcik

Stewart B Hatch

Wyatt S Daentl

An example gas turbine engine compressor includes a first compressor section. The first compressor section includes a rotating stage that includes rotating blades and a stationary stage upstream thereof that includes stationary guide vanes. The stationary vanes controllably pivot about respective pivot axes for providing flow control into the rotating stage.

Low compressor having variable vanes

An example variable vane scheduling method includes adjusting variable vanes from a position based on a first schedule to a position based on a different, second schedule in response to a control feature. An example method of controlling flow through a compressor of a turbomachine includes moving variable vanes to positions that allow more flow into the compressor in response to bleed air being communicated away from the compressor.

Variable vane scheduling

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Andover, CT, United States of America

Sean D J Blake