Patent ID: 8192162

Claim:
An elastomer profile useful for reducing airframe vibration and improving blade tracking of a helicopter rotor blade comprising: a) an elastomer material, b) wherein said elastomer profile substantially comprises said elastomer material, c) wherein said elastomer profile is adhered to said helicopter rotor blade by use of a pressure sensitive adhesive, d) wherein said helicopter rotor blade is a main lifting rotor blade or a tail rotor blade, e) wherein the adherence of said pressure sensitive adhesive to said helicopter rotor blade is peelable by hand, f) wherein said elastomer profile is substantially the shape of an elongated wedge, g) wherein said elongated wedge has a ramp angle of less than 20 degrees inclusive, h) wherein said elongated wedge chord length is less than 20 percent inclusive of the length of the rotor chord dimension, i) wherein said elastomer profile is attached to the trailing edge of said helicopter rotor blade with respect to the motion of said helicopter rotor blade, and j) wherein said elastomer profile is adjustable by segment length, location, said cord length, said ramp angle, or number as required to correct said airframe vibration and said blade tracking simultaneously to a satisfactory condition according to a predetermined criterion, wherein said predetermined criterion is based on airframe vibration and blade tracking measurements.