TY  - RPRT
TI  - A three-dimensional viscous flow analysis for the helicopter tip vortex generation process about square and round tipped blades
AU  - Lin, S.-J.
AU  - Levy, R.
AU  - Shamroth, S. J.
PY  - 1986
UR  - https://ntrs.nasa.gov/citations/19860035211
ID  - 19860035211
ER  -