Geometry considerations for jet noise shielding with CTOL engine-over-the-wing concept
作者： U. VON GLAHN , D. GROESBECK , M. RESHOTKO
DOI: 10.2514/6.1974-568
关键词:
摘要: Jet noise shielding benefits for CTOL engine-over-the-wing installations were obtained with various model-scale circular nozzles and wing chord geometries. Chord-to-nozzle diameter ratios varied from 3 to 20, while of nozzle height above the near zero 3. Spectral data jet velocities 640 1110 ft/sec. Characteristics low frequency sources are discussed. Jet-noise is correlated in terms acoustic geometric parameters. Implications extending full-scale
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