hey all, i’m doing a long haul from KLAX to Tokyo-Haneda in a 777. My issue is that when I switch on VNAV to climb, it gets to its cruising altitude (31,000 feet) way too fast. My PFD says it climbs at around 4,800 V/S. Any way to stop this?
777 climbing WAYY too fast
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Use reduced thrust to match the sim’s pre-set landing weight value. The only semi functional FMC presumably ignores our cosmetic performance entries so try combining autothrottle speeds with manually selected rates of climb, reducing the climb rates as the needed N1s creep up with altitude. By 31,000 feet you should simulate only a small amount of excess thrust over that required to maintain speed.
You can regard any imperfection in the sim as an on the day deferred defect and work around it to get the job done. -
- Offizieller Beitrag
You can use a CLB derate on the thrust limit page. CLB 2 should reduce the thrust nicely. Keep in mind that the 777 is at near max landing weight and not near typical takeoff weights. So the climb rate is expected to be high, that's just physics.
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Use reduced thrust to match the sim’s pre-set landing weight value. The only semi functional FMC presumably ignores our cosmetic performance entries so try combining autothrottle speeds with manually selected rates of climb, reducing the climb rates as the needed N1s creep up with altitude. By 31,000 feet you should simulate only a small amount of excess thrust over that required to maintain speed.
You can regard any imperfection in the sim as an on the day deferred defect and work around it to get the job done.Increase fuel weight over fmc
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You can use a CLB derate on the thrust limit page. CLB 2 should reduce the thrust nicely. Keep in mind that the 777 is at near max landing weight and not near typical takeoff weights. So the climb rate is expected to be high, that's just physics.
I increased the fuel weight of the A321 to 21.1 tons, and it could only climb to 37,000 feet. It climbed very slowly. When I reduced the fuel weight, the aircraft's performance increased. You told me before that this fuel or zfw wouldn't have any effect on the aircraft, but it actually does. In fact, when you reduce fuel weight, the vref speed also decreases.
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- Offizieller Beitrag
Increase fuel weight over fmc
The data entered into the (M)CDU does not affect the actual weight of the aircraft. Entering incorrect data will just lead to either high speed or unexpected stalls because the computed stall speeds are then just wrong. Please make sure to enter the correct values just like you would in the real aircraft. You can use the cheat code (double press the line select key) to insert the correct values.
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The data entered into the (M)CDU does not affect the actual weight of the aircraft. Entering incorrect data will just lead to either high speed or unexpected stalls because the computed stall speeds are then just wrong. Please make sure to enter the correct values just like you would in the real aircraft. You can use the cheat code (double press the line select key) to insert the correct values.
I take the values from Simbrief and enter them
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The data entered into the (M)CDU does not affect the actual weight of the aircraft. Entering incorrect data will just lead to either high speed or unexpected stalls because the computed stall speeds are then just wrong. Please make sure to enter the correct values just like you would in the real aircraft. You can use the cheat code (double press the line select key) to insert the correct values.
As the fuel load increases, the aircraft actually loses performance. I really liked this.
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- Offizieller Beitrag
I take the values from Simbrief and enter them
That is probably going to cause issues during the flight because the performance values might not be correct for the physical behavior of the aircraft. So the aircraft is going to have the same weight and everything as always but you're telling the flight computer wrong values. This has caused crashes of real world aircraft in the past, so would not recommend.
