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Post by jsaus on Apr 22, 2024 8:49:59 GMT -5
Test using max weight - 147,000lb. And if one follows the handling notes on climb power, level flight can barely be achieved. Climbing with power set at 50/2550 is the only way to get a 300-350 ft/min climb. If I follow the notes and use 45.5/2350, it can barely hold speed in level flight.
Maybe I'm doing something wrong? Or is that the expected performance at that weight?
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Post by Tom/CalClassic on Apr 22, 2024 9:17:05 GMT -5
In what sim?
I know that the Strats required the longest runways at LAX, and the gates protecting Sepulveda Blvd. had to be closed to allow them a longer run.
I haven’t flown the Strat in years, so I don’t know what might be the problem. I always suggest to load the FS default flight, switch planes, and take off.
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Post by jsaus on Apr 22, 2024 9:33:39 GMT -5
In FS9,
Yeah long takeoff. Climb a little low. But I was at a pretty high weight. Perhaps it’s normal. I might just leave it at a higher power setting when climbing.
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Post by mrcapitalism on Apr 22, 2024 19:12:36 GMT -5
At what altitude?
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Post by jsaus on Apr 22, 2024 22:35:17 GMT -5
Right from take-off. Although the more I read, the more it appears the B377 wasn’t exactly a rocketship. However, one cannot use the typical climb settings in the notes. It simply wont climb. Even at lower weights. Especially if you want to keep the CHC under 200 C. Which I discovered is impossible. I did read somewhere it would take a couple hours to get to FL200. Although a more reasonable level at max weight would seem to be 14,000 - 16,000ft. I don't know though how it ever got to 25,000ft I just completed a flight in it. SFO-HNL. 8:50 hrs. No GPS. Bubble Sextant only. Did quite well I thought.  fshub.io/flight/2987743/report |
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Post by Tom/CalClassic on Apr 23, 2024 8:12:24 GMT -5
Nice job. Dave McQueen once posted a PAA SFO-HNL trip report where they never got above 15,000 feet, and most of the trip was spent in the 7,000 to 10,000 foot region.
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Post by jsaus on Apr 23, 2024 8:18:53 GMT -5
Nice job. Dave McQueen once posted a PAA SFO-HNL trip report where they never got above 15,000 feet, and most of the trip was spent in the 7,000 to 10,000 foot region. Thanks. Yes I think that’s the case. And I think it’s case in general in that era. Much lower altitudes were often used. I probably would’ve stayed around the lower teens knowing what I do now. We’ll see how the return works out. Maybe I need to add in failures and have an engine or two go down. Just to keep it realistic! |
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Post by mrcapitalism on Apr 23, 2024 9:29:10 GMT -5
In the B377 I can most often top out at FL240/250 doing the Hawaii transit even fully loaded. My profile looks very close to yours, except it takes me about 2 hours longer than you. That could be related to your higher power settings, but it's going to be quite a bit of work to reconstruct from your posted flight to figure out any idea what's going on.
Most I can say right now is that I'm not having this problem in the same aircraft although in FSX. The choice of simulator shouldn't matter in this topic.
EDIT: Did your record your winds enroute? That would help a lot in understanding your indicated airspeeds.
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Post by jsaus on Apr 23, 2024 13:36:17 GMT -5
In the B377 I can most often top out at FL240/250 doing the Hawaii transit even fully loaded. My profile looks very close to yours, except it takes me about 2 hours longer than you. That could be related to your higher power settings, but it's going to be quite a bit of work to reconstruct from your posted flight to figure out any idea what's going on. Most I can say right now is that I'm not having this problem in the same aircraft although in FSX. The choice of simulator shouldn't matter in this topic. EDIT: Did your record your winds enroute? That would help a lot in understanding your indicated airspeeds. Wow ok. No way I could do that at the recommended climb settings - 45.5 mp / 2350 rpm. Even in level flight at a few thousand feet it will barely maintain speed. I used 50/2550 to 16,000. At normal climb power and I'd never get there. At all. CHT's go passed 200 pretty easy. Opening the cowl flaps to reduce temps stops the climb even at that high power setting. So I just ignored the temps and kept the cowls mostly or all closed. Winds weren't bad. I don't recall too much. 10-15kts. The speeds on the flight report are TAS. Backing the props back to 2100 raised the BMEP so I could throttle back to 41 or even less inches for the cruise so it would be around the 200KIAS area. |
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Post by Tom/CalClassic on Apr 23, 2024 14:49:23 GMT -5
Which version/livery of the Strat are you using?
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Post by jsaus on Apr 23, 2024 14:56:58 GMT -5
United. With the upgraded VC. Well, I’m trying again. Departed PHNL. Around 137,000lbs. ISA +10. Climbing through 8000ft at 250-300 ft/min. Using 45.5/2350 climb power. CHT around 195 with 10% cowl flaps open. fshub.io/radarHmm…much better than the outbound with cooler temps. Seems you need to keep it ‘on the step’ so to speak with speeds up otherwise she dies a little. Maybe it IS touchy to loading the default flight first which I always do. Not sure. If this is normal, I’m happy. What else have I got to do over the next 8 hours but inch my way higher. 😋 |
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Post by jsaus on Apr 23, 2024 15:26:12 GMT -5
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Post by mrcapitalism on Apr 23, 2024 16:37:29 GMT -5
Even in level flight at a few thousand feet it will barely maintain speed. Tell me what speed you are expecting. In Knots Indicated Airspeed. Where did you download this aircraft? |
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Post by mrcapitalism on Apr 23, 2024 16:48:02 GMT -5
Also to note, even at FL230, I couldn’t maintain the MP required. Something is definitely wrong. FL230 might be above the "full throttle height." But if you're able to get up to FL230 using climb power you shouldn't have any issue maintaining level flight. |
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Post by jsaus on Apr 23, 2024 17:38:06 GMT -5
Even in level flight at a few thousand feet it will barely maintain speed. Tell me what speed you are expecting. In Knots Indicated Airspeed. Where did you download this aircraft? Notepad says 190 at 45.5/2350. If >175, maintain level flight. At that power setting it wouldn’t accelerate even at 2000-3000ft. Only basically closing the Cowell flaps did it climb. But CHT’s exceeded red line. www.fs2000.org/2012/10/03/fs2004-boeing-b377-wide-screen-panel/ |
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