1 hour ago, travelabroad said:

I just tried sitting at EKCH where the winds should have been 13kts @ 220 ... but I got 4-5 kts from 130. Which doesn't comply 😕

Is this just coincidental or is there some work-around to get this to work, somehow?

Are you putting both a departure and arrival airport in the flight setup screen when using live weather?

8 minutes ago, KERNEL32 said:

Are you putting both a departure and arrival airport in the flight setup screen when using live weather?

Well... no. Why/Is that necessary? 

I just tried LFPG: It showed correct data IN the flight setup. Winds should be around 14-16 kts. But when starting the sim and sat on the runway, I got around 2-3 kts. When airborne, I saw, that I got the correct winds... so something is working 🙂

1 hour ago, travelabroad said:

Well... no. Why/Is that necessary? 

I just tried LFPG: It showed correct data IN the flight setup. Winds should be around 14-16 kts. But when starting the sim and sat on the runway, I got around 2-3 kts. When airborne, I saw, that I got the correct winds... so something is working 🙂

I did a series of test flights a while back in the 172 using manually set winds. I was mainly interested in checking the accuracy of the airspeed indicator, and wanted to see if the simulator actually models turbulence caused by terrain. (It does).

What you were seeing in this case was something new in the world of flight simulation, and it’s not a bug. The new MSFS atmospheric model simulates the effect of ground friction on wind speed. 

All airport wind measurements worldwide are taken at a standard height of 10 meters (31 feet) above the ground. All METAR reports of current wind, and TAF forecasts of future wind are based on 10 meters above the surface. 

For a given constant wind speed at that height, as you move down closer to the surface, the speed will always be less than at 10 meters.

In the real world, the amount of speed reduction will depend on the exact kind of surface. A gravel surface will produce more friction than smooth concrete. And, real wind flow is rarely perfectly laminar. There is often vertical mixing that manifests as gusts.

The surface wind sensed by a 172 whose pitot tube sits less than 5 feet above the ground, would be different than a 747 whose pitot tubes are about 17 feet above the surface.

Real aircraft equipped with a wind display can’t actually calculate external wind speed or direction until they are airborne, but flight simulators (including P3D and XP) have always made it possible on the ground for the sake of simplicity.

This is not the same thing as the bug that currently afflicts live weather in locations outside of Europe where the injected wind speed is never higher than three knots at any altitude.

The other thing you noted at EKCH, where the wind direction was different than the current real world METAR is also not a bug - it is a design choice, which is going to be controversial. As near as I can determine, the Live Weather airport winds (where they are currently working), are not based on real-time METAR observations. They are generated by the MeteoBlue forecast model. They are a prediction of what the wind “should” be at a given location and time. Like any forecast, sometimes it will be quite close to actual conditions, but sometimes not. 

21 minutes ago, JRBarrett said:

I did a series of test flights a while back in the 172 using manually set winds. I was mainly interested in checking the accuracy of the airspeed indicator, and wanted to see if the simulator actually models turbulence caused by terrain. (It does).

What you were seeing in this case was something new in the world of flight simulation, and it’s not a bug. The new MSFS atmospheric model simulates the effect of ground friction on wind speed. 

All airport wind measurements worldwide are taken at a standard height of 10 meters (31 feet) above the ground. All METAR reports of current wind, and TAF forecasts of future wind are based on 10 meters above the surface. 

For a given constant wind speed at that height, as you move down closer to the surface, the speed will always be less than at 10 meters.

In the real world, the amount of speed reduction will depend on the exact kind of surface. A gravel surface will produce more friction than smooth concrete. And, real wind flow is rarely perfectly laminar. There is often vertical mixing that manifests as gusts.

The surface wind sensed by a 172 whose pitot tube sits less than 5 feet above the ground, would be different than a 747 whose pitot tubes are about 17 feet above the surface.

Real aircraft equipped with a wind display can’t actually calculate external wind speed or direction until they are airborne, but flight simulators (including P3D and XP) have always made it possible on the ground for the sake of simplicity.

This is not the same thing as the bug that currently afflicts live weather in locations outside of Europe where the injected wind speed is never higher than three knots at any altitude.

The other thing you noted at EKCH, where the wind direction was different than the current real world METAR is also not a bug - it is a design choice, which is going to be controversial. As near as I can determine, the Live Weather airport winds (where they are currently working), are not based on real-time METAR observations. They are generated by the MeteoBlue forecast model. They are a prediction of what the wind “should” be at a given location and time. Like any forecast, sometimes it will be quite close to actual conditions, but sometimes not. 

Very interesting. Thanks a million for explaining, @JRBarrett

Greatly appreciated. Makes a lot of sense. 

I'll try some examples. As you say, wind speed and direction should be correct and display correctly when airborne (which also seems to be the case). I was looking at the waves, which should have an effect, as the wind over the water would be affected by the wind speed in game, right? Otherwise (if the wind is always around 3-5 kts at 'ground' (0 ft), then we should never have variation in wave height, dependent on the wind speed? Not sure if I'm making myself clear?

5 hours ago, Ricardo41 said:

Another question: when I start the engines the ITT gauge goes into the red and I get an aural warning. I did follow the checklist. What am I doing wrong?

This is a bug, and it has been reported to Asobo. The TBM is different than turboprops like the King Air in that it does not have separate controls for power, prop pitch and condition (idle speed) It’s a single lever that works like an automotive manual gearshift.

The real TBM is started with the lever at the lower right position, and once the engine starts and stabilizes, the lever is brought up and over to the center left position, which unfeathers the prop and sets normal ground idle.

Due to the existing bug, if you try to start the engine in accordance with the POH, you’ll get an ITT overtemp. The way to avoid it for now is to move the lever to the center left position before start. (Essentially going from “4th gear” to “neutral”).

It took me a while to figure out how to manipulate the lever, because the throttle, pitch and mixture levers on my quadrant all affect how it moves. 

Thanks, I'll try that. Other than that, the TBM is amazing. 

14 minutes ago, travelabroad said:

Very interesting. Thanks a million for explaining, @JRBarrett

Greatly appreciated. Makes a lot of sense. 

I'll try some examples. As you say, wind speed and direction should be correct and display correctly when airborne (which also seems to be the case). I was looking at the waves, which should have an effect, as the wind over the water would be affected by the wind speed in game, right? Otherwise (if the wind is always around 3-5 kts at 'ground' (0 ft), then we should never have variation in wave height, dependent on the wind speed? Not sure if I'm making myself clear?

The speed right at the surface will be less than at 10 meters, but it won’t necessarily be 2-3 knots. It depends on the wind speed. In the test I did, I set the wind manually to 30 knots, which gave a wind speed of 17 knots right at the surface in the 172. And it was not a constant speed. There were definite gusts.

Surface wind speed very definitely does affect water in the sim. If you crank it up to 40 or 50 knots, you’ll get some big swells with whitecaps.

Not the kind of conditions where you would want to try landing the A5!

Edited August 23, 20205 yr by JRBarrett

5 minutes ago, JRBarrett said:

The speed right at the surface will be less than at 10 meters, but it won’t necessarily be 2-3 knots. It depends on the wind speed. In the test I did, I set the wind manually to 30 knots, which gave a wind speed of 17 knots right at the surface in the 172. And it was not a constant speed. There were definite gusts.

Surface wind speed very definitely does affect water in the sim. If you crank it up to 40 or 50 knots, you’ll get some big swells with whitecaps.

Not the kind of conditions where you would want to try landing the A5!

Thanks, @JRBarrett. You're being very helpful. Appreciated.

10 hours ago, jpe828 said:

What about wind? I have flown all over North America, wind is always 3 knots on Live weather

I've actually been getting wind variations this morning on a flight from KDEN to KNEW. 

 

... Sometimes the wind dropped to 2kts. 

 

😉

 

I've rarely came across conditions when the wind was over 3-5kts... I've flown in Hawaii, Asia, NA, Europe. Most of the time the wind was 3kts and under. There was once where the wind was 8kts in London and that's when I actually saw waves in the water, which looked really nice and realistic. I am thinking somehow that the wind data isn't being picked up correctly cause in Oahu, the water looks very calm and I know there should be plenty of waves there since it's a popular place for surfers.

Just did a test flight around EKCH. There's winds at 13 kts @ 260. When sitting on the runway, I got 1-2 kts @ 133. When I got up in the air at an altitude around 800 ft, I got 12 kts @ 200. When at 1.500 ft, I got 13 kts @ 283 (which seemed more correct). The water wave animation was definately also affected by the winds. When descended to a couple hundred feet above the water, my readings from the plane suddenly went back to 1-2 kts @ 133 ... even though the waves indicated otherwise windy conditions... 

I don't know... I'm stumped...

Wow!!! Try flying around Italy, just north of Bologna... Massive thunderstorms. Looks really scary!

Edited August 23, 20205 yr by travelabroad

A little farther away... 🙂

Thanks for the story great read appreciated 🙂

That's why I said the TBM is my plane to go and have a blast in MSFS2020 in VFR  🙂

Did a flight from LOWZ > LOWI and those turbulent air bumps (from the mountains) was a great flight

There is something else in this simulator what makes it stand off to the others, is the feeling of flying through the air (despite some numbers need some tweaking)...

Can't wait for the 3d party GA aircraft arrives, and also enjoying to do a whole lot more hand flying also...

Hope they will fix the WX stuff soon...

Edited August 23, 20205 yr by awf

North America is not getting accurate Real World Weather... Europe it seems is.