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Overspeed
EHM-1749 Hector:
I never, never use the autothrottle and keep an eye all the time at the wind speed and direction. Keeping an eye on the wind is very easy because this option is built in FS with Shift-Z or if you use FSNavigator. It is easier with the FMC because you can visually check it. It is also visual with the B-747.
One more thing: knowing the maximum indicated speed of the plane is a must which in large jets also depends on the GW and altitude.
Wind direction and speed can have two effects: either it can overspeed or stall the plane. You can relax a bit when flying into a head wind but when the opposite is true, you must excercise extreme caution because you could be flying with a comfortable 430kts ground speed and still the plane can stall.
I normally stay at least 30kts from the Vmax and with my hand at the throttle. Many times I had to cut it totally to avoid an overspeed situation or had to go to the top to avoid a stall.
Northern Europe is tricky on this. When you cross the ocean you can expect to have strong wind movement within 100 nm from coast line so you got to be careful.
I flew last sunday from Vancouver to Atlanta and most of the time had a 40 to 50 kts tail wind. This keeps me with my eyes glued to the speedmeter and by doing this I avoided to get an overspeed situation twice and a stall once during the flight.
So the golden rule: forget the autothrottle, keep an eye on the wind and stay at least 30 kts below the Vmax.
Hector
EHM-1500 Jim:
Hector, i agree with what you say but it is of no use when it comes to the on-line weather problem. With IVAO etc, the weather will suddenly update, change the wind direction and cause an immediate overspeed - there is no time to adjust anything. I have had it a lot of times and it is very annoying......
EHM-1749 Hector:
I fly on-line 99% of the time 95% in IVAO and never had that problem. As per previous posts, it maybe caused because I use FSUIPC and have set the changing rate. Because I am not in my home computer cannot tell the numbers but I think it is about 5 degrees/second or something like that and about 1 kt/second. I have to check it tonite.
I understand your point because if you don´t have this setting the changes happen too fast.
I never tried and I don´t know if this can be done, but if you fly on-line then you can use the Jeppessen Real Time wheather feature in FS. When I am getting used with a new plane I don´t fly on-line but use this feature.
Cheers,
Hector
EHM-1714 João:
Hello and thank you all for your replies.
To Philip, yes, I've got the wind smoothing function activated on IVAP but it's not enough. Maybe I will follow your suggestion and get a registered copy of FSUPIC.
To Hector: I'm an experienced FS Pilot (and soon to be real pilot!) so I know how to manage my speed correctly my only problem is with IVAO :! Not using the autothrottle is your choice, but that only makes it harder without any need and it is also not a realistic way of flying since with the exapction of airplanes without A/T pilots keep it on most of the time.
João
EHM-1749 Hector:
--- Quote ---Originally posted by EHM-1749 Hector
So the golden rule: forget the autothrottle, keep an eye on the wind and stay at least 30 kts below the Vmax.
Hector
--- End quote ---
Hi Joao, sorry if I sounded as lecturing you on this matter. It was not my intention and of course it is not.
I should have state: "So my golden rule" instead of "So the golden rule".
Please accept my apologies.
Hector
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