초록 ▼

A flow fence for a turbo fan jet engine, as taught by Stein et al. in U.S. Pat. No. 3,841,790, is modified by the provision of serrations about its internal circumference. Thus, when the modified flow fence is inserted into or removed from the flow field, a more gradual transition occurs in the flow

A flow fence for a turbo fan jet engine, as taught by Stein et al. in U.S. Pat. No. 3,841,790, is modified by the provision of serrations about its internal circumference. Thus, when the modified flow fence is inserted into or removed from the flow field, a more gradual transition occurs in the flow thereby improving surge margins.

대표청구항 ▼

A flow control system for the annular inlet housing of a compressor, said system comprising: at least one split ring received in a circumferential recess in said housing, said ring having adjacent free ends, a circular reference diameter, and an internal circumference which is serrated; and means co

A flow control system for the annular inlet housing of a compressor, said system comprising: at least one split ring received in a circumferential recess in said housing, said ring having adjacent free ends, a circular reference diameter, and an internal circumference which is serrated; and means connected between said housing and actuation points adjacent each of the free ends of said ring for displacing said free ends toward and away from one another through a predetermined path thereby varying the reference diameter of said ring; and bringing said serrated internal circumference into and out of the flow path of said inlet housing.