DASBUR
Member
Hi All
Composite blades are being tested on a Rotorway helicopter. I spoke with the blade designer/manufacturer a Oshkosh. He stated that the blades are overbalanced at the tips. So there is less weight at the root end of the blade. This puts the span CG further towards the tip of the blade. They made an under sling change on the rotor head. Common sense tells me that the under sling should be increased because the blade cg has moved out. They have decreased the amount of under sling.
The under sling change was a calculated change when the blades were installed. They knew it needed to be changed before the testing began. It was not a we have a shake I guess we will need to change the amount of under sling. Again common sense tells me that the under sling should be increased but they decreased it. Never thought to ask them why, it's bugging the hell out of me. Any ideas???
Thank you Doug
Composite blades are being tested on a Rotorway helicopter. I spoke with the blade designer/manufacturer a Oshkosh. He stated that the blades are overbalanced at the tips. So there is less weight at the root end of the blade. This puts the span CG further towards the tip of the blade. They made an under sling change on the rotor head. Common sense tells me that the under sling should be increased because the blade cg has moved out. They have decreased the amount of under sling.
The under sling change was a calculated change when the blades were installed. They knew it needed to be changed before the testing began. It was not a we have a shake I guess we will need to change the amount of under sling. Again common sense tells me that the under sling should be increased but they decreased it. Never thought to ask them why, it's bugging the hell out of me. Any ideas???
Thank you Doug