Page 9 Advertisements Column 1

Hawke's Bay Herald-Tribune, Volume 81, Issue 61, 4 December 1937, Page 9

Destruetive vibraliona «et up rn the structure of an aeroplane during power divea are eliminated by a newJypatented anti-flutter device. The mechanism consists of a flexible arm piv oted by meane of a speeiai mounting bracket near the end of a wing tip or 'other surface where vibration occurs. The far end af this springy arm car| ries washer-like rings that act t»a » counter weight, while -the inner end ia provided with a loeking device. Sudden upward or downward pressure on tho wing tip causes the loek to hold tne inner end of the arm rigid. The outin end, however, remains free, and vibrations set up in the wiug structure arrj neutraJised by exactly opposite uiovemcnts of the weight. Thus UaligerotH vibratioxis, known to tlide aviator m fiutter, which are likely to shake a "pland to bits dunng test tiightfl, aro eounteraeted and eliminated befor». ean do any damage.