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757 Captain III >> 757 Captain III - General >> Engines a little overpowered?
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Message started by spence on Jan 27th, 2020 at 1:59pm

Title: Engines a little overpowered?
Post by spence on Jan 27th, 2020 at 1:59pm
I have noticed the 757 seems slightly overpowered. A full load of passengers and cargo and the aircraft is still climbing at 3500-4000fpm through almost the entire climb. I know the 757 has a ton of power, but from the research I have done it is not typical to see those climb rates throughout the entire climb. Maybe this can be looked at in the future. Thanks!

Title: Re: Engines a little overpowered?
Post by trevors on Jan 27th, 2020 at 2:23pm
Search the 757 general forum for my PW and RR revised flight dynamics

Title: Re: Engines a little overpowered?
Post by spence on Jan 28th, 2020 at 4:00am
Okay will do thanks.

Title: Re: Engines a little overpowered?
Post by Angel of Attack on Jan 28th, 2020 at 4:53am

trevors wrote on Jan 27th, 2020 at 2:23pm:
Search the 757 general forum for my PW and RR revised flight dynamics

Hi Trevor I wonder if it still works for 1.5.0.1
I too noticed a very far difference of cruing EPR and Fuel flow figure from the realword FPPM data for PW2037, right now I run fuel_flow_scalar=0.9 to match the over all trip fuel consumption, but that still not line up well when curing at different altitude.
While I had done such aero tweaks for FeelthereEjet,737CL,and PSS757 it's still a very painfully long job to do. :-?

Title: Re: Engines a little overpowered?
Post by trevors on Jan 28th, 2020 at 7:58pm
My flight dynamics are only for the PW2040.
As far as EPR readouts are concerned, that is hard-coded and cannot be corrected much by tweaking FD. However, the fuel flow is correct.

Title: Re: Engines a little overpowered?
Post by Captain Sim on Jan 29th, 2020 at 4:06pm

spence wrote on Jan 27th, 2020 at 1:59pm:
I have noticed the 757 seems slightly overpowered. A full load of passengers and cargo and the aircraft is still climbing at 3500-4000fpm through almost the entire climb. I know the 757 has a ton of power, but from the research I have done

Why do you think it's slightly overpowered? I THINK it's slightly underpowered. My dog THINKS it's perfect  8-)
May we see the research materials pls?

Title: Re: Engines a little overpowered?
Post by Captain Sim on Jan 29th, 2020 at 4:08pm

Angel of Attack wrote on Jan 28th, 2020 at 4:53am:
cruing EPR and Fuel flow figure from the realword FPPM data for PW2037

May we see the data pls?

Title: Re: Engines a little overpowered?
Post by silverheels on Jan 29th, 2020 at 11:14pm

Captain Sim wrote on Jan 29th, 2020 at 4:06pm:

spence wrote on Jan 27th, 2020 at 1:59pm:
I have noticed the 757 seems slightly overpowered. A full load of passengers and cargo and the aircraft is still climbing at 3500-4000fpm through almost the entire climb. I know the 757 has a ton of power, but from the research I have done

Why do you think it's slightly overpowered? I THINK it's slightly underpowered. My dog THINKS it's perfect  8-)
May we see the research materials pls?

What breed do you have? I have one golden and one mini LH Dachsy... :)

Title: Re: Engines a little overpowered?
Post by Captain Sim on Jan 30th, 2020 at 3:20pm

silverheels wrote on Jan 29th, 2020 at 11:14pm:
What breed do you have?

Shih-tzu, and he insists the thrust is spot on, unless PROVEN opposite.

Title: Re: Engines a little overpowered?
Post by Captain Sim on Jan 30th, 2020 at 3:38pm

Angel of Attack wrote on Jan 28th, 2020 at 4:53am:
realword FPPM data

What particular parameters and when exactly they do not match the 757 model?
Which means a lot of the 757 screenshots compared to the real performance tables, with each out of limit parameter marked red.
Moreover aircraft and conditions must be right, and that must be obvious from the screenshots and comments. 

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