Header1200x385

facebook_page_plugin
× Welcome to the CPL Aerodynamics question and answer forum. Please feel free to post your questions but more importantly also suggest answers for your forum colleagues. Bob himself or one of the other tutors will get to your question as soon as we can.

Elevator Trim Tab

  • Posts: 138
  • Thank you received: 15

Bosi72 created the topic: Elevator Trim Tab

Hi
Book page 149, Exercise A6, Question No 20.
To trim an aircraft for a higher nose attitude, the elevator trim tab must be deflected so as to provide a local lift force which acts -
(a) upwards to lift the elevator up
(b) upwards to push the elevator down
(c) downwards to lift the elevator up
(d) downwards to push the elevator down

The correct answer on next page says (a)

However the answer explanation in my opinion pertains to (c): When the elevator trim tab is deflected downwards it provides a force which acts upwards lifting the elevator to force the tail down - thus lifting the nose.
Can't find this in errata.

Thanks
#1

Please Log in or Create an account to join the conversation.

  • Stuart Tait

Stuart Tait replied the topic: Elevator Trim Tab

G'day Bosi

It's correct in the current edition, I can't recall doing the amendment, I'll add an errata for older copies.

Cheers
#2

Please Log in or Create an account to join the conversation.

Time to create page: 0.056 seconds