Some experimental results are presented for amplitude and phase of small signal frequency response of pneumatic lines in configurations with branching. The recent data of Franke, Malanowski, and Martin [1] is extended in two areas: 1 Phase as well as amplitude measurements were made. 2 Stepped and conical branches were studied as well as constant area branches. Agreement is good with theoretical predictions based on the Iberall-Nichols-Brown model [2, 3, 4] and a simple continuity model for branch junctions. Three-dimensional effects at junctions are apparently not significant for the small amplitudes (less than 0.1 psi) and range of frequencies (100 to 1000 Hz) studied.

This content is only available via PDF.
You do not currently have access to this content.