TY  - RPRT
TI  - Analysis of some helicopter operating problems
AU  - Jenkins, J. L., Jr.
AU  - Morris, C. E. K., Jr.
AU  - Snyder, W. J.
AU  - Ward, J. F.
PY  - 1971
UR  - https://ntrs.nasa.gov/citations/19710021299
ID  - 19710021299
ER  -