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EXPERIMENTAL STUDY OF SHOCK-POSITIONING METHOD OF RAM-JET-ENGINE CONTROL

机译:Ram-JET-ENGINE控制的冲击定位方法的实验研究

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Ram-jet-engine control by shock positioning was investigated on a 16-inch fixed-geometry ram jet at free-stream Mach numbers from 1.50 to 1=98. The continuous-acting, closed-loop system with proportional-plus-integral control action was subjected to disturbances in fuel flow. Mach number, angle of attack, and exhaust area. Steady-state and dynam-ie performance is presented.nThe control method appears to offer adequate control of ram-jet-engine operation. Response times less than 0.1 second (90-percent reduction of error) were obtained with a stable system. The minimum response time (0.05 sec) approached the limit imposed by the system dead time. By providing a margin of operation in steady state from the region of diffuser buzz, transients into this region could be made without incurring buzz.

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