Tests of a thermal acoustic shield with a supersonic jet
(Previously cited in issue 24, p. 4244, Accession no. A81-48623)
Pickup, N.↗
Engineering topics
Mangiarotty, R. A.
Publications and source records attributed to Mangiarotty, R. A..
Wind tunnel study on the effects of acoustical disturbances on controlled laminar flow
An exploratory study was conducted to investigate the sensitivity of laminar flow controlled (LFC) boundary layers to external acoustical disturbances using an 8-ft span, 20-ft chord, and 30-deg swept wing section with laminar flow control through spanwise slots. The objectives were to identify Tollmien-Schlichting and other amplification frequencies, critical disturbance levels in the boundary layer, the influence of suction rate on these disturbances, and the transfer function between an external sound field and the corresponding disturbance induced in the boundary layer.
Mangiarotty, R. A.↗
Acoustic-lining concepts and materials for engine ducts
Acoustic lining technology and materials for turbofan engine ducts, considering environmental factors and noise spectra
Mangiarotty, R. A.↗
Parametric studies of the acoustic behavior of duct-lining materials
Duct lining parameters effects on engine inlet and fan discharge noise reduction during fan jet landing
Atvars, J.↗
Duct-lining materials and concepts
Acoustic characteristics evaluation of duct lining materials and design of acoustically absorptive aircraft inlets and fan ducts
Feder, E.↗