PPRuNe Forums - View Single Post - Bigger balls than mine in this 139
View Single Post
Old 8th Feb 2020, 22:05
  #25 (permalink)  
Search&Rescue
 
Join Date: Sep 2007
Location: Somewhere by the Baltic Sea
Posts: 64
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by weemonkey
Please excuse my ignorance but how do you trim a helicopter?
Reason I'm asking is on the fb video it went up into hover first, during the transition the tail dipped slightly only to be instantly corrected.

Just wondering if trim is some function of the cyclic control system.

I could google but would rather hear from the horses mouth

ta.
PITCH AND ROLL TRIM ACTUATORS
Pitch and roll trim actuators are installed in parallel with the cyclic stick below LH forward cockpit floor. Trim actuators have full travel authority on the pitch and roll control lines.
Trim actuators can be overridden by pilot commands via a spring-clutch. Actuators are operated by pilot commands or by the AFCS. They convert the command to a mechanical output.
Search&Rescue is offline