Variable stator vane assembly for a rotary turbine engine
US4874289A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 26, 1988 |
| Grant date | Oct 17, 1989 |
| Priority date | — |
| Expiry date | May 26, 2008 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01D17/162
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A variable angle vane stator arrangement of relatively simple design is pided enabling widely variable angular stator vane positioning with little aerodynamic loss. This is accomplished by positioning the leading nose portion of each variable second row vane axially ahead of, and adjacent, the trailing edge of an associated fixed vane of a first row of vanes to produce a slot between the adjacent vanes through which air can flow. The axis of rotation of each variable vane is located off of the variable vane itself in a manner to maintain good slot geometry over a wide range of vane stagger angles. The variation of the rear vane stagger angle creates a variation in the direction of the exit air vector, which in turn enhances the performance of the following rotor blade row.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.