Anybody fancy a cabriolet chopper ?
- Thread starter Geedee
- Start date
Ad: This forum contains affiliate links to products on Amazon and eBay. More information in Terms and rules
T Bolt
Colonel
Wow! Looks like something was seriously out of balance.
It's like the article says, it's ground resonance. It's when rotor rpm and oleo rebound ratios get together.
The way to prevent it is never stay light on the skids for long, especially when the rotor is winding down from operating RPM. You're supposed to have the collective fully down before you start engine shutdown. I'll bet that pilot didn't.
When you take off, take off, when you land, plant it.
TH-55s were noted for that. I've seen it happen. The incident I saw was much faster than that. I think this one is being shown is slow motion.
The way to prevent it is never stay light on the skids for long, especially when the rotor is winding down from operating RPM. You're supposed to have the collective fully down before you start engine shutdown. I'll bet that pilot didn't.
When you take off, take off, when you land, plant it.
TH-55s were noted for that. I've seen it happen. The incident I saw was much faster than that. I think this one is being shown is slow motion.
Airframes
Benevolens Magister
Rather lucky there were only injuries. A friend of mine was killed about 18 years ago, in a similar incident, when the collective failed on landing.
