System for Testing Pressure Probes Using a Simple Sinusoidal Pressure GeneratorNational Aeronautics and Space Administration, 1970 - 10 pages |
Common terms and phrases
3010 Hz Figure amplitude ratio antinode axial positions Calibration cavity designed to meas different frequencies digital voltmeter distortion is introduced effects of wave-shape Flush mounted transducer frequency measurement frequency range frequency response Frequency spectrum function of nozzle Galton Galton whistle hertz inch inside diameter jitter was sufficient Lewis Research Center mounted transducer output N/cm² nozzle supply pressure nozzle-to-resonator-tube spacing operating characteristics Oscilloscope tracings output Electronic signal Peak-to-peak amplitude Static-pressure Peak-to-peak pressure amplitude Performing Organization phase angle phase measuring sys plug pressure amplitude increases pressure level Pressure measuring ports pressure-wave shape probe and reference probe configurations probe is shown producing sinusoidal pressures psig Reference pressure transducer reference transducer resonant frequency resonant tube driven scope set of ports shown in figure shown plotted signal generator output signal generator tuned simulated probe sine wave pressure sinusoidal pressure amplitude spectrum analyses test probe transducer output Electronic tuning piston volume ratio waveform zero crossing