(UTC)
  Visit Captain Sim web site  
  Welcome, Guest. Please Login or Register

  

  CAPTAIN SIM FORUM › 757 Captain III › 757 Captain III - General › Derate temperatures and Topcat
‹ Previous Topic | Next Topic ›
Page Index Toggle Pages: 1 Send TopicPrint
Derate temperatures and Topcat (Read 676 times)
spence
Full Member
*
Offline



Posts: 40
Joined: Dec 26th, 2011
Gender: Male
Derate temperatures and Topcat
Sep 26th, 2020 at 9:03pm
Print Post  
Hello,

I am running into a bit of an issue with Topcat's performance data and the CS 757. On a relatively lightly loaded aircraft, Topcat is calling for a derated temp of 68c, but the fmc won't accept a larger value than 52c. Now sometimes the EPR doesn't match up with Topcat, but this seems like quite a big difference.
  
Screenshot_1_004.jpg ( 148 KB | 45 Downloads )
Screenshot_1_004.jpg
Back to top
 
IP Logged
 
Angel of Attack
Full Member
*
Offline



Posts: 249
Joined: Dec 15th, 2019
Re: Derate temperatures and Topcat
Reply #1 - Sep 27th, 2020 at 1:12am
Print Post  
As pre reglation, you shouldn't have more than 25% of thrust reduce. also there would be envelope for max temperature at different altitude.
As my exprecnce, EPR is quite close at most of the time, but it could be different for many reason.
  
Back to top
 
IP Logged
 
Page Index Toggle Pages: 1
Send TopicPrint
‹ Previous Topic | Next Topic ›
 
  « Board Index ‹ Board  ^Top   

CAPTAIN SIM FORUM » Powered by YaBB 2.6.0!
YaBB Forum Software © 2000-2024. All Rights Reserved.

Valid RSS Valid XHTML Valid CSS Powered by Perl Source Forge