초록 ▼

A two-spool air cycle machine includes a high pressure cooling turbine section; a low pressure cooling turbine section; and first and second shafts that are concentrically arranged and that are independently rotatable with respect to one another. A turbine wheel of the high pressure turbine section

A two-spool air cycle machine includes a high pressure cooling turbine section; a low pressure cooling turbine section; and first and second shafts that are concentrically arranged and that are independently rotatable with respect to one another. A turbine wheel of the high pressure turbine section is secured to the first shaft, and a turbine wheel of the second turbine section is secured to the second shaft. Such an air cycle machine may be used a variety of different aircraft environmental control systems.

대표청구항 ▼

[ We claim:] [1.] An air cycle machine for an aircraft environmental control system, the air cycle machine comprising:first and second shafts concentrically arranged and independently rotatable with respect to one another;a first cooling turbine section including a first turbine wheel, the first tur

[ We claim:] [1.] An air cycle machine for an aircraft environmental control system, the air cycle machine comprising:first and second shafts concentrically arranged and independently rotatable with respect to one another;a first cooling turbine section including a first turbine wheel, the first turbine wheel being secured to the first shaft;a second cooling turbine section including a second turbine wheel, the second turbine wheel being secured to the second shaft, said second shaft having a first end that extends beyond a first end of said first shaft;a second thrust plate located between the first ends of the first and second shafts, the thrust plate extending radially outward from the second shaft;a first set of foil bearings for supporting the first shaft; anda second set of foil bearings for supporting the second shaft, said second set including a third and fourth thrust bearing on opposite sides of the second thrust plate.