How rotor head bolt will fail on helicopter?
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The failure of rotor head bolts on helicopters can occur due to various reasons. One common cause is the improper application of antiseize material during installation, leading to the development of overloads and subsequent failure . Another cause is hydrogen-induced intergranular stress corrosion cracking (HI-IGSCC), which can result from corrosion and damage to the bolt threads . Fatigue failure can also occur, with cracks initiating and growing from corrosion pits or other areas of stress concentration . In some cases, failures may occur without prior indications of damage, highlighting the importance of regular inspections and detection of cracks before they reach critical sizes . Understanding the causes of rotor head bolt failures is crucial for ensuring the safety and reliability of helicopters.
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| Papers (5) | Insight |
|---|---|
Patent 27 Jun 2012 4 Citations | The rotor head bolt will fail on the helicopter when the explosive bolt is detonated after the remote control signals cannot be received. |
9 Citations | The rotor head bolt failed due to fatigue-crack initiation and growth from a corrosion pit located at the blade retaining bolt hole. |
3 Citations | The given text does not provide any information about the failure of a rotor head bolt on a helicopter. |
24 Citations | The rotor head bolts on a helicopter can fail due to improper application of antiseize material, leading to the development of axial tension forces higher than expected. |
14 Citations | The rotor head bolt can fail due to hydrogen-induced intergranular stress corrosion cracking (HI-IGSCC) caused by corrosion and damage to the cadmium plating. |
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