Anti-swirl vanes are used by some manufacturers to delay the full development of half speed circulation in annular clearance spaces. The objective is to reduce the aerodynamic cross-coupling in the forward direction. The novel feature of a jet damper is a number of tangential nozzles discharging against the rotor surface speed. Some preliminary results on a 33. 9 Kg rotor demonstrate that significant reductions in amplitude are obtained at the synchronous critical speeds.
|Number of pages||23|
|Journal||NASA Conference Publication|
|Publication status||Published - 1986|