Ram air turbine

摘要

A ram air turbine comprises a turbine housing which mounts a number of circumferentially spaced turbine blades that function predominantly as impulse turbine blades and a number of splitters, each located in between adjacent turbine blades, which function predominantly as a reaction turbine blade but are shorter in length than the turbine blades. The cross section of the turbine housing decreases between its forward and aft ends while the height of both the turbine blades and splitters increases in the same direction such that the tips of the turbine blades and splitters collectively form a substantially cylindrical shape.

主权项

1. A turbine, comprising:
a turbine housing having a forward end, an aft end spaced from said forward end and an outer surface, said turbine housing having a cross section which decreases from said forward end to said aft end; a number of turbine blades mounted to said outer surface of said turbine housing and being circumferentially spaced from one another, each of said turbine blades extending from said forward end to said aft end of said turbine housing, each of said turbine blades including a blade root located at said outer surface of said turbine housing, a blade tip spaced radially outwardly from said blade root, a forward end located at said forward end of said turbine housing and an aft end located at said aft end of said turbine housing, said space between said blade root and said blade tip defining a height dimension, said height dimension of said turbine blades increasing in a direction from said forward end to said aft end thereof; a number of splitters mounted to said outer surface of said turbine housing, each of said splitters being located in one of said circumferential spaces between adjacent turbine blades, each of said splitters extending from said forward end of said turbine housing to a termination point spaced from said aft end thereof, each of said splitters including a splitter root located at said outer periphery of said turbine housing, a splitter tip spaced radially outwardly from said blade root, a forward end located at said forward end of said turbine housing and an aft end, said space between said splitter root and said splitter tip defining a height dimension, said height dimension of said splitters increasing in a direction from said forward end to said aft end thereof; said splitter tips of said splitters and said blade tips of said turbine blades collectively forming a generally cylindrical shape which extends along the entire length of said turbine housing between said forward end and said aft end thereof.