Flutter suppression air foils

Details Flutter suppression air foils Flutter suppression air foils

1990-06-07

1991-06-11

Bennett, Henry

Drying and gas or vapor contact with solids

Apparatus

Rotary drums or receptacles

226 97, F26B 1320

Patent

active

050221663

ABSTRACT:
Apparatus and methods for reducing the amplitude and frequency of web-edge flutter associated with drawing web materials are provided. The apparatus includes a pair of air foils disposed proximate to a pair of opposing planar surfaces of the web. Each of the air foils includes a first convex surface facing the web and disposed in contact with air flowing on the web for producing a venturi effect which reduces at least the flutter amplitude in the open draw.

REFERENCES:
patent: 2574083 (1951-11-01), Andrews
patent: 3198499 (1965-08-01), Stanley
patent: 4145796 (1979-03-01), Mair
patent: 4306358 (1981-12-01), King, Jr.

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