Acoustic liners

N) E.W. Price, "Recent Advances in Solid Propellant Combustion Instability , Ibid, pp 101-113 O) G.A. Marxman C.E. Wooldridge, "Finite-Amplitude Axial Instability in Solid-Rocket Combustion , Ibid, pp 115-27 P) W.A. Sirignano, "A Theory of Axial-Mode Shock-Wave Oscillations in a Solid-Rocket Combustor ,Ibid, pp 129-37 Q) B.T.Zinn C.T. Saveli, "A Theoretical Study of Three-Dimensional Combustion Instability in Liquid-Propellant Rocket Engines , Ibid, pp 139-47 R) R.J. Priem E.J. Rice, "Combustion Instability with Finite Mach Number Flow and Acoustic Liners , Ibid, pp 149-59 S) M.W. Thring, "Combustion Oscillations in Industrial Combustion Chambers , Ibid, pp 163-68... 

Priem E J. Rice, "Combustion Instability with Finite Mach Number Flow and Acoustic Liners , Ibid, pp 149-59 20) M. Barrere... 

CAS 7727-43-7 EINECS/ELINCS 231-784-4 Uses Filler in primers (automotive and appliance), brake linings, liners for jar lids, plastisols, acoustical compds., urethane foams, athletic goods (bowling/gol tennis balls)... 

The complex three-layer membrane of Bangkok Airport s membrane roof is illustrated in Fig. 12.9. Here and as explained before, the high and lasting solar reflection of 70% of the outer waterproof PTFE/glass layer is also an important feature. To improve the acoustic properties of the roof, an additional middle layer has been included which consists of a cable net covered with transparent polycarbonate (PC) sheets. This, in conjunction with the translucent inner membrane liner, acts as a baffle. Figure 12.10 provides an interior view of the concourses with the innovative membrane envelope. 

Door panels cabin linings brake liners thermo-acoustic insulation trim parts seat cushions and backs headliners package trays dash boards trunk liners. The possible stakeholders for the utility of sisal fiber in automotive components industry... 

Mills Acoustic enclosure of the mill shell obstructs heat dissipation and makes inspection difficult, i. e., is not satisfactory. Boltless liner plates on rubber backing, or rubber liners, do not sufficiently reduce noise emission. A commonly employed and generally satisfactory solution is as follows Whole grinding plant with all its noise sources (mill, drive, air separator, conveyors, elevators, filters, etc.) accommodated in a closed sound-insulated building with central control room for operators and with additional ventilation (see Funke, 1969 and 1973, Techn. Merkblatt, Bundesverband der Deutschen Kalkindustrie, 1975). 

The refractory wire inside the pipe would be either centered in the flow stream or attached to the inner liner surface. The wire waveguide would remain acoustically isolated from all other components both inside and outside of the pipe. Materials would have been carefully chosen for the internal waveguide and horn that would allow attachment to the internal surface and would not diffuse into the gas stream at elevated temperatures. The horn and waveguide materials on both sides of the inlet should have similar acoustic impedances to the inlet material in order to minimize reflections at the interfaces. 

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