August 3, 200421 yr Hey guys I've been testing out a few aircraft from 3rd parties and comparing it to the default aircraft. I did a test with both and these are the results I got flying at FL370 under fair weather at Mach 0.85 full weight of 910,000lbs. for the 744ER. Everything was exactly equal on both airplanes as far as weights, speed, cruise alt., auto pilot settings, etc. In fact I actually gave them both the same aircraft.cfg, so as you can see even all their flying properties were the same, however, I got mixed resultes, this is what I got...1ST AIRPLANEEPR = .77N1 = 51EGT = 382N2 = 71.5FF = 4.9OT = 172OP = 882ND AIRPLANEEPR = 1.06N1 = 89.9EGT = 598N2 = 84.9FF = 5.8OT = 265OP = 79Which one looks to be more normal during cruise? They differ significatly on EGT and EPR. I notice the 2nd airplane struggles to get to that altitude and sometimes even went side to side close to stalling until getting to FL370. My biggest concern was looking at the EGT's of both airplanes. Red Line on the 744 is 600 EGT...should EGT be so high as 598 when at a comfortable cruise???? The 1st airplane only goes up to 600 EGT during takeoff and maybe a little during climb but then settles down...I'm concerned for the 2nd one...which one is correct????What should a 744 EICAS look like during this type of cruise. Thanks for your help!!!
August 3, 200421 yr Hi,By no means I'm an expert on this, but the 1st aircraft is the worst:- To my knowlegde the EPR should be always 1 or higher. I don't know what the EPR of a 744 normally is at cruise, but for a DC9er is somewhere around 2.00, depending on OAT etc.- Cruising at Mach 0.85 with N1% of 51% can't be true. It should be something like 85%My 2 cents Location: Vleuten, The Netherlands, 17.3dme SPL 108.40 | Simulator: FS2024 System: AMD 7800X3D - Gigabyte X670 - RTX 4090 - 64GB DDR5 - 2 x 2TB SSD - 32" 1440p Display - Windows 11 Pro
August 3, 200421 yr I hope this would give you an idear, maybe you can do another test. The figues is taken direct from the aerowinx site.LEVEL FLIGHTMach .84, FL350Gr. Weightx 1000 kg350 Thrust SettingReal World 96.4 % N1 Thrust SettingPS1.398.7 % N1 If you want I can do a test in PS1 with the settings you give meHere is what the PS1 cockpit look like with Gross Weight:600000lbs just before decent to honulu(sp?)http://forums.avsim.net/user_files/86664.jpg(Please note that the plane is climbing a little due to wind and weather!)
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