Transpiration cooled blades for turbines, compressors, and the like

Claim 1

A TRANSPIRATION COOLED BLADE FOR TURBINES, COMPRESSORS, AND THE LIKE, COMPRISING IN COMBINATION A HOLLOW STRUT MEMBER HAVING A PERIPHERAL WALL OF GENERALLY AIRFOIL OUTLINE DEFINING AN INNER CHAMBER, SAID STRUT MEMBER BEING CLOSED AT ONE END AND HAVING COOLANT SUPPLY PASSAGE MEANS AT THE OTHER END COMMUNICATING WITH SAID INNER CHAMBER FOR SUPPLYING COOLANT THERETO, SAID STRUT MEMBER HAVING A PLURALITY OF GENERALLY LONGITUDINAL LANDS ON THE OUTER SURFACE OF SAID PERIPHERAL WALL EXTENDING BETWEEN SAID ENDS AND A PLURALITY OF GENERALLY TANSVERSE LANDS ON SAID OUTER SURFACE EXTENDING BETWEEN SAID LONGITUDINAL LANDS, SAID GENERALLY LONGITUDINAL AND GENERALLY TRANSVERSE LANDS DEFINING A PLURALITY OF GENERALLY RECTANGULAR DISCRETE RECESSES IN SAID SURFACE IN A GENERALLY HONEYCOMB PATTERN, SAID PERIPHERAL WALL HAVING A PLURALITY OF PASSAGE MEANS THERETHROUGH COMMUNICATING BETWEEN SAID INNER CHAMBER AND AT LEAST SOME OF SAID RECESSES FOR TRANSMITTING COOLANT FROM SAID CHAMBER TO SAID RECESSES, SOME OF SAID PERIPHERAL WALL PASSAGE MEANS BEING OF LARGER CROSS-SECTION THAN OTHERS FOR TRANSMITTING MORE COOLANT, EACH OF SAID PERIPHERAL WALL PASSAGE MEANS OPENING INTO A SINGLE DISCRETE RECESS, AND A PERIPHERALLY CONTINUOUS POROUS SHEATHING COVERING SAID RECESSED SURFACE AND ATTACHED TO SAID LANDS.