FOREWORD
Changes in this revision are format/editorial only
1 SCOPE
2 REFERENCES
3 TEST CELL/SYSTEM NOISE SUPPRESSION REQUIREMENTS
3.1 General
3.2 Test Cell/System Design
3.3 Acoustic Properties
4 OPERATIONAL NEED
4.1 General
4.2 Military Procurements
4.3 Disadvantages
5 THE COANDA/REFRACTION CONCEPT
5.1 General
5.2 Concept Definition
5.3 The Coanda Effect
5.4 Acoustic Refraction
5.5 Application to Noise Suppression