Automatic lock-positioning of foldable helicopter blades

Details Automatic lock-positioning of foldable helicopter blades Automatic lock-positioning of foldable helicopter blades

B - Operations, Transporting

64

C

244/16

B64C 27/50 (2006.01) B64C 27/54 (2006.01)

Patent

CA 1161413

Automatic Lock-Positioning Of Foldable Helicopter Blades Abstract The foldable rotor blades (12) of a helicopter are automatically adjusted to pitch angles where they can be locked as a prerequisite to folding, by com- mands generated (98, 112) to cause trim actuators (39-41) to drive swash plate servos (17-19) to the correct positions, initially (98) in response to stored trim references (120) and eventually (112) in response to the difference (109) between stored swash plate servo positions (120) and current servo positions (20-22). A claimed embodiment uses values of servo positions (20-22), just before unlocking the blades upon re-spreading them, to store, in nonvolatile memory (138), deviations (131) from nominal positions stored in read only memory, and generates (159) trim references in a subsequent folding operation in response to integrated values (166) to reduce actual position errors (162) toward zero from desired positions indicated by the stored deviations (148).

386099

Affiliated with

Also associated with

Rating

Automatic lock-positioning of foldable helicopter blades does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Automatic lock-positioning of foldable helicopter blades, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Automatic lock-positioning of foldable helicopter blades will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-633954