PPRuNe Forums - View Single Post - TA/RA
Thread: TA/RA
View Single Post
Old 31st August 2011 | 03:55
  #12 (permalink)  
lion-g
 
Joined: Dec 2007
Posts: 127
Likes: 0
From: Changi
Hi Guys,

Just to revisit this thread. Recently I heard that it's impossible to get a TA with a conflicting traffic getting an RA.

When a TA occurs with a conflicting traffic getting an RA, I was told that it was due to the interrogation rate was not "fast enough" and it keep recalculating based on the our instantaeous V/S, which we are changing, thus only "able to render" a TA on our side.
(The arguement was that both A/C having the same envelope will definitely get a similar Resolution.)

Apperently, when a TA occurs, we are not suppose to make any changes to the vertical plane so that we can allow the TCAS to do the calculation.
Sounds logical if there's more than 1 conflicting traffic.

Anyone have got more information about TCAS system ? Especially on horizontal Miss Distance Filter in TCAS ?

Thank you in advance.

Cheers,
lion-g
lion-g is offline  
Reply