PPRuNe Forums - View Single Post - Flex T/O vs. V1/Vr
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Old 29th July 2004 | 11:43
  #5 (permalink)  
Leo77
 
Joined: Jul 2004
Posts: 11
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From: at home ;-)
Hi!

Thanks. I think its not really fokker related and my questions can be answered without knowing aircraft details.

Ok, now i start understanding the problem. Acceleration from V1 or Vr to V2 is limiting when spread between those is too big regarding the EO Scenario.

As far as i know most modern Jet Engines use Tref= ISA + 15°C (SL)
E.g.: actual OAT 15°C. So what happens when i select TOGA Thrust at 15°C actual OAT, Flex 25° (Which isnt allowed on a F70 with RR Tay 620-15 Engines) or when i firewall.

Same question for OAT of 35°. (5 above Flat rated temp.)

What is that flat rating all about? What do i get in the end?

Thank you!

Leo
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