Header1200x385

facebook_page_plugin
× Welcome to the CPL AGK 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.

Question

  • jones
  • Topic Author

jones created the topic: Question

G'day Bob and Rich,

I've got a question that I can't find an answer too. It's not an exam question per se, but I think this is my best avenue for an answer.
If you take a piper arrow power setting table (io-360, csu, non-turbo). To maintain a constant power setting (65% in this example) at 2400RPM, the required manifold pressure to maintain 65% power decreases. at SL it's 22.9" and at 8000ft it's 21". I'm wondering why the manifold pressure required decreases, with an increase in altitude.

The only thing I can think of is, that it's got to do with the butterfly valve position?

Thanks in advance for your answer! :)
#1
Attachments:

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

Time to create page: 0.052 seconds