What Is Mast Bumping And How Dangerous Is It For Helicopters?

Mast bumping is something that can occur with some types of helicopters. Here's exactly what it is, what causes it, and how ...
Flying

Bumps During Helicopter Flight Can Prove Fatal

Mast bumping is a critical helicopter hazard, particularly in designs with two-bladed, semi-rigid rotors (like Robinsons and certain Bells), occurring when the main rotor is "unloaded" (reduced or ...
Aviation Week

Helicopters in Turbulence: Part 2

Forensic engineers examined the main rotor driveshaft that had sheared just below the teeter stops. Teeter stops are fitted to the main rotor driveshaft to prevent the main rotor spindles from ...
DLR

Rigid helicopter rotor blades – Is this really enough?

Specially shaped helicopter rotor blades with a kink at the outer part make it possible to reduce the radiating annoying rotor noise [1]. Against this background, the aeroelastic behaviour together ...