Variable Camber Tandem Blade Bow for Turbomachines.
Patent, filed 19 Dec 84, Patented 8 Jul 86,
DEPARTMENT OF THE NAVY WASHINGTON DC
Pagination or Media Count:
Multiple flat-plate blade rows of pitch adjustable blades are offset mounted in a manner such that when flat-plate blades in adjacent rows are aligned at a specific pitch setting, respective flat-plate blades of the adjacent rows nearly mate. The offset between the flat-plate blade rows functions to produce unequal pitch angle settings of the blades of adjacent rows which, in turn, function to produce the result that the respective flat-plate blades which nearly mate, in combination, produce a blade configuration which has an effective camber. This invention relates generally to variable pitch, flat-plate blade rows for turbomachinery, and more particularly, to variable pitch, offset multiple flat-plate blade rows for bidirectional thrust or flow devices which effectively provide variable camber blade row configurations. Variable pitch, flat-plate blade rows are commonly used in applications where bidirectional thrust or flow is required. One such application is bow or stern bidirectional thrusters installed on naval ships to provide a turning capability independent of the ships main propulsion and steering systems. Another application is in certain blower and air distribution duct systems where bidirectional air flow is required. PAT-CL-415-130. jes
- Jet and Gas Turbine Engines