TY  - RPRT
TI  - Helicopter Rotor Blade With Free Tip
AU  - Stroub, Robert H.
AU  - Young, Larry
AU  - Cawthorne, Matthew
AU  - Keys, Charles
PY  - 1992
UR  - https://ntrs.nasa.gov/citations/19920000482
ID  - 19920000482
ER  -