TY  - RPRT
TI  - Helical Face Gear Development Under the Enhanced Rotorcraft Drive System Program
AU  - Heath, Gregory F.
AU  - Slaughter, Stephen C.
AU  - Fisher, David J.
AU  - Lewicki, David G.
AU  - Fetty, Jason
PY  - 2011
UR  - https://ntrs.nasa.gov/citations/20120000867
ID  - 20120000867
ER  -