Posts by user "IFMU" [Posts: 5 Total up-votes: 22 Pages: 1]

Originally Posted by bobdxb

Primary trigger: Loss of all four AC power sources.

• These include:
  • Left Integrated Drive Generator (IDG)
    
  • Right IDG
    
  • Left Backup Generator
    
  • Right Backup Generator
    Engine failure alone does not trigger the RAT, must be all of above

Originally Posted by tumtiddle

Jump to 1:48 in this video (if the link doesn't automatically put you there): https://youtu.be/SbDJjgN7Xbo?si=ShNJ2oA39j46iw9M&t=108
You can't hear that RAT sound at the very beginning of the flypast?

Originally Posted by HumbleDeer

That's because the RAT is ultimately either deployed because it's "forced" out by an active signal, OR it's deployed because the electromagnetic system is de-energized and the spring loaded mount flaps it out. That's what happens when nothing is stopping the spring from doing spring action things, like you'd see when there's no power going to whatever usually holds it shut.

Originally Posted by Icarus2001

Simply that the RAT is an electrical generator, that is all.

Originally Posted by jdaley

Another post referenced the RAT only supplying electrical power after 10s - I find that hard to believe, not instant obviously because there has to be some stabilisation time and startup/boot time but it would imply the LH flight instruments would only be active very late. Hopefully the RAT hydraulics would be effective quicker than that.