| 摘要 |
FIELD: aircraft engineering. ^ SUBSTANCE: proposed noise suppressor contains resonance chambers limited by partitions, perforated plates in holes of which perforated conducting tubes are installed. Tubes of first plate are blanked from one end face. Blanks of each tube are provided with perforations for immediate passing of sound jet from tube and its dividing by blanked end face of tube of second plate. To prevent blow of directed jet against plate in contact with surrounding medium, lower end face of tube of second plate is blanked. Perforations of tubes provide dissipation of sound jet energy among spaces of resonance chambers. ^ EFFECT: increased noise suppression coefficient. ^ 1 dwg |
