Laser velocimeter developed to measure flow of air in vicinity of one of blades of helicopter rotor. Image-rotating optic transforms laser beams to rotating reference frame. Transformed beams stationary with respect to rotor blade; enabling continuous monitoring of velocity of flow at some point in reference frame attached to blade, provided that blade did not vibrate.
Laser Velocimeter For Use On Helicopter Rotor
NASA Tech Briefs ; 19 , 8
1995-08-01
Miscellaneous
No indication
English