초록 ▼

This invention relates to apparatus for accurately determining the characteristics of turbo-powered simulators. The apparatus provides for the determination of the air flow through the turbine of the simulator, the air flow through the fan section, and the thrust produced, all with high accuracy. Th

This invention relates to apparatus for accurately determining the characteristics of turbo-powered simulators. The apparatus provides for the determination of the air flow through the turbine of the simulator, the air flow through the fan section, and the thrust produced, all with high accuracy. The data thus accumulated, together with the data on temperatures and pressures both inside and outside the simulated engine, enable the engineer to determine other desired characteristics. The apparatus is free of certain disadvantages of conventional equipment in that it substantially eliminates tare forces in thrust measurement, it eliminates the necessity of accounting for inlet momentum, it minimizes distortion of inlet flow, and it enables simple and accurate measurement of the air flow through the engine simulator.

대표청구항 ▼

Flight simulation apparatus comprising: a chamber having an inlet passage and an exhaust passage; means for causing movement of air through said exhaust passage; means in said exhaust passage for controlling air flow through said passage to a predetermined amount; an apertured plate outside of said

Flight simulation apparatus comprising: a chamber having an inlet passage and an exhaust passage; means for causing movement of air through said exhaust passage; means in said exhaust passage for controlling air flow through said passage to a predetermined amount; an apertured plate outside of said chamber adjacent said inlet passage; flexible sealing means connecting said plate to said inlet passage; compensating expansible chamber means attached to said chamber and to said plate, said compensating expansible chamber means being responsive to the difference in pressure between the interior and the exterior of said chamber; and force measuring balance means interposed between said chamber and said plate.