Richard Gaetti 0 Posted September 17, 2014 Report Share Posted September 17, 2014 Hello, is it possible to implement the feature off the different derate modes, i.e. TO-1 and TO-2 for the 737NG and the 777? Quote Link to post Share on other sites
nixdevelopment 7 Posted September 18, 2014 Report Share Posted September 18, 2014 Hello there, due to derated takeoffs being rarely performed, this feature is not planned at the moment. If however demand proves high, I might consider implementing it in the future. Quote Link to post Share on other sites
Egbert Drenth 0 Posted September 23, 2014 Report Share Posted September 23, 2014 due to derated takeoffs being rarely performed,... Hi, I just bought the all 3 calculators and I was wondering the same. SAS nearly always use derated take offs, a combination of assumed temperature and derated engines (TO1) So please consider. Best regards, Egbert Drenth Quote Link to post Share on other sites
nixdevelopment 7 Posted September 23, 2014 Report Share Posted September 23, 2014 ...SAS nearly always use derated take offs, a combination of assumed temperature and derated engines (TO1) De-rated thrust and assumed temperature method may be used in combination and I will look into developing this feature. Thank you for your valuable feedback Quote Link to post Share on other sites
DLRK 0 Posted September 28, 2014 Report Share Posted September 28, 2014 I also would like to see derated takeoffs included. It's the one reason I haven't bought this yet. Quote Link to post Share on other sites
Ian P 10 Posted September 28, 2014 Report Share Posted September 28, 2014 Just out of interest, derated takeoffs are used at any airport (with enough runway) where there is a noise issue. Which means half of Europe, these days! Ian P. Quote Link to post Share on other sites
nixdevelopment 7 Posted September 29, 2014 Report Share Posted September 29, 2014 Derated takeoffs are used to limit the engine output, for example derating from 24K to 22K. This means that even if the pilots push the throttles all the way forward, max thrust available will be 22K - even though it's a 24K engine. Think of it as virtually changing the engines. Assumed temperature tricks the engines that OAT is higher than it actually is, so the engines use this fake limit for setting the takeoff thrust. If the pilots decide to push the throttles to max, they will still have 24K on their disposal. Just out of interest, derated takeoffs are used at any airport (with enough runway) where there is a noise issue. Which means half of Europe, these days! Ian P. When it comes to noise issues, only climb settings matter (altitude of setting climb thrust). Also, it is possible to get the same engine output for takeoff by: 1. using assumed temp only 2. de-rated engines + assumed temp ( note that second assumed temp, will be lower than the first). Differences are mentioned in the paragraph above. Quote Link to post Share on other sites
nixdevelopment 7 Posted February 20, 2015 Report Share Posted February 20, 2015 De-rated takeoff option (B777) now available in version 3.2.0. Please visit the updates section. Quote Link to post Share on other sites
Richard Macdonald Woods 1 Posted February 20, 2015 Report Share Posted February 20, 2015 Nikola, What a very pleasant surprise! Many thanks, Richard Quote Link to post Share on other sites
Nicrative 0 Posted April 29, 2015 Report Share Posted April 29, 2015 (edited) Hello, I wonder are the de-rates also available for the B737NG calculation tool or only B777 for now (request was made for both, link takes to 777 updates). I am just curious because this would be the dealbreaker for me whether to buy your product or not. Norwegian for example uses de-rated takeoffs on B738 all the time possible (meaning 90% of their flights). Nicrative Edited April 29, 2015 by Nicrative Quote Link to post Share on other sites
nixdevelopment 7 Posted April 30, 2015 Report Share Posted April 30, 2015 Hello, I wonder are the de-rates also available for the B737NG calculation tool or only B777 for now (request was made for both, link takes to 777 updates). I am just curious because this would be the dealbreaker for me whether to buy your product or not. Norwegian for example uses de-rated takeoffs on B738 all the time possible (meaning 90% of their flights). Nicrative Hello, and welcome to the forum. TOPER 737NG currently does not support DE-RATE mode for takeoff calculations. I will consider implementing it in the near future. Thank you for drawing my attention to the post with the link. I have changed it to reference the correct TOPER type. Regards, Quote Link to post Share on other sites
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