Patents Assigned to Helitune Limited
  • Position detector
    Patent number: RE33097
    Abstract: A detector for checking the symmetry of a helicopter rotor while it is rotating has a scanner (11) which scans vertically a field of view (15) and the view is interrupted by a vertical strip on the blade tip (16). A slot (18) in the strip gives a characteristic signal as at (L.sub.2). The position of the signal (L.sub.2) in a scanning cycle gives an indication of the height of the blade tip and also the circumferential spacing between blades.
    Type: Grant
    Filed: May 16, 1988
    Date of Patent: October 17, 1989
    Assignee: Helitune Limited
    Inventor: Christopher I. Moir