The lifetime of composite rotor blades is shorter than metal based rotor blades that were used in older generations of helicopters.
Example:
The B0 105 helicopter is cleared for up to 3.5 positive G force and one negative. Its agility and responsiveness can be partly attributed to its rigid rotor blade design, a feature uncommon on competing helicopters.
The rotor system is entirely hingeless, the rotor head consisting of a solid titanium block to which the four blades are bolted; the flexibility of the rotor blades works to absorb movements typically necessitating hinges in most helicopter rotor designs. The reliability of the advanced rotor system is that, in over six million operating hours across the fleet, there had been a total of zero failures. One benefit of the Bo 105's handling and control style is superior takeoff performance, including significant resistance to catastrophic dynamic rollover; a combination of weight and the twin-engined configuration enables a rapid ascent in a performance takeoff.
The MBB Bo 105 is the only heli cleared for acrobatic stunt flight and is the work horse of "Flying Bulls" (Red Bull).
Example:
The B0 105 helicopter is cleared for up to 3.5 positive G force and one negative. Its agility and responsiveness can be partly attributed to its rigid rotor blade design, a feature uncommon on competing helicopters.
The rotor system is entirely hingeless, the rotor head consisting of a solid titanium block to which the four blades are bolted; the flexibility of the rotor blades works to absorb movements typically necessitating hinges in most helicopter rotor designs. The reliability of the advanced rotor system is that, in over six million operating hours across the fleet, there had been a total of zero failures. One benefit of the Bo 105's handling and control style is superior takeoff performance, including significant resistance to catastrophic dynamic rollover; a combination of weight and the twin-engined configuration enables a rapid ascent in a performance takeoff.
The MBB Bo 105 is the only heli cleared for acrobatic stunt flight and is the work horse of "Flying Bulls" (Red Bull).
Source: http://en.wikipedia.org/wiki/MBB_Bo_105