Parker_Woodruff Posted June 11, 2013 Report Posted June 11, 2013 I took this video awhile back at FL210. Mooneys are great. 194 KTAS on 11.6 GPH. Joys of LOP in a turbo. Quote
xftrplt Posted June 11, 2013 Report Posted June 11, 2013 Was the temp at FL210 really 0 degrees C, i.e., 27 degrees above Standard? If it were, say, Standard, the TAS would be ~185Kts. Not shabby, though. I guess I'm saying, did you align the temp and the altitude in the TAS window? Quote
fantom Posted June 11, 2013 Report Posted June 11, 2013 Great catch, Dick! So, 'only' about 186 kts on 11.6 gph, Parker. What a dog Quote
Parker_Woodruff Posted June 11, 2013 Author Report Posted June 11, 2013 Look again... FL210 at -10C I believe. Quote
xftrplt Posted June 11, 2013 Report Posted June 11, 2013 I believe you're correct, Parker. My apologies. 191.7 on the computer. 16.5 nm/gal, very nice. Note to self: See optometrist. Quote
Parker_Woodruff Posted June 12, 2013 Author Report Posted June 12, 2013 Typically use 30" or so to get this kind of cruise performance. LOP of course. Quote
driller Posted June 12, 2013 Report Posted June 12, 2013 What kind of performace are you seeing with the 3-blade prop? vs. 2-blade. curt Quote
Parker_Woodruff Posted June 12, 2013 Author Report Posted June 12, 2013 I don't really have much M20K time with the 2 blade prop. But the climb is very nice with 3 blades. Quote
Z W Posted June 12, 2013 Report Posted June 12, 2013 Parker: I'm curious, how far LOP are you at that setting, and do you measure it by TIT or by the last EGT to peak? That's better performance than I get at the same fuel flow, I think, by 5 or 10 knots. You have the -SB engine instead of my -MB but I think in cruise they are essentially the same engine. Quote
Dale Posted June 16, 2013 Report Posted June 16, 2013 Parker, If you went 50 degrees rich of peak, how much would that change your airspeed and fuel burn? In your video, you appear to be at around 30 to 31 inches on the MP and it looks like around 2500 on the rpm. Does that sound about right? At those settings and 50 degrees rich of peak how much would that change your airspeed, fuel burn and cht's, if you know or could guesstimate. Thanks for your time. Quote
Parker_Woodruff Posted June 17, 2013 Author Report Posted June 17, 2013 Well my airspeed might have to go to best glide after my cylinders were all getting beat up from such abuse if I was running 50ROP at these settings. I imagine it would be about 2-2.5 GPH more and maybe 7 knots better. Best to just add in more manifold pressure and stay LOP for equal performance. 1 Quote
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