Hi Daniel, yes they don't have ASE, sure :-) I thought you mean how they do for retrieve winds aloft.

 

For specific planning purpose there are specif and sofisticated software (like Jeppsen).

 

For use of ASE you can retrive winds aloft directly into ASE, processing a flightplan previuosly created. Then you get a winds aloft chart where you can retrive data for winds and temp from. It's very simple and useful.

Another thing: which unit do you insert in CRUISE SPEED in ASE Flight Planning processing tool?

 

KTAS or other? Is not mandatory correct?

Has anyone flown Tutorial #2 lol? I went through a very detailed procedure on how to derive good forecast values in in the weather appendix...

The cruise speed you insert in ASE/AS2012 is 460 Knots. But it's all described in the No 2. tutorial.

Yes Tabs, I red carefully that part. But there is one thing I cannot understand very well. How you choose your intervals in DES FORECAST? Let's me explain, if are at FL380 and have to descend to 2000' suppose, you have an interval of 36000' correct?

 

Is it resoneale to choose as first FL300 then FL200 then FL100 as forecast for winds aloft? This part is not very clear for me.

 

Regardind ASE speed, why 460?

Yes Tabs, I red carefully that part. But there is one thing I cannot understand very well. How you choose your intervals in DES FORECAST? Let's me explain, if are at FL380 and have to descend to 2000' suppose, you have an interval of 36000' correct?

 

Is it resoneale to choose as first FL300 then FL200 then FL100 as forecast for winds aloft? This part is not very clear for me.

 

Regardind ASE speed, why 460?

Look for speed changes that aren't linear or direction changes and pick those. The FMC assumes a linear reduction in wind speed, I believe, and if you give it something something outside that, it'll have a better plan for you.

I use FS Build + ASE and then manually put it into the FMC....like a RW pilot would :D

 

Actually, in the real world most FMCs pull the data through ACARs sent from dispatch, afaik.

This is a very good web site for winds aloft among others forcasts

 

http://www.aviationweather.gov/products/nws/boston

 

 

Actually, in the real world most FMCs pull the data through ACARs sent from dispatch, afaik.

80% of the time I do it manually from winds aloft forecasts. Sometimes we'll get a data uplink, but it's in a test phase. I don't think most airlines do it through ACARS, but I'm not sure.

80% of the time I do it manually from winds aloft forecasts. Sometimes we'll get a data uplink, but it's in a test phase. I don't think most airlines do it through ACARS, but I'm not sure.

 

Which airline Matt?

All I can say to the OP, is to read the tutorial 2 from Tabs very carefully, he explains the logic very clearly behind the choice of the three altitudes for Descent winds. Before I read Tab's tutorial, I had the same question regarding which altitudes to use, and had settled (as explained by Dr. Vaos above) on 9000, 18000, and 30000. For those altitudes I pulled the values from ASE's report screen for the destination field, but it did not seem right to me, because those are the winds in the close vicinity of the destination field, not the area where I start and progress through the descent, which is about 100-150nm away from the destination.

 

Basically, Tab's method is to match ASE winds aloft from the briefing screen (remember, you need to have a flight plan processed by ASE for this to work) to the waypoints in between TOD and the end of descent altitude. It is the perfect explanation, you just have to read through it with care.

Some flight plans allow you to seem what altitude you can expect to be at what fix, and then you can refer to the winds aloft forecast. FL300 winds can be a bit different in the descet compared to over the DEST.

A related question: is there a way to get a forecast with "historical" weather (e.g. from yesterday or last week) in ASE without actually starting a flight in FSX at that historical time? Given all of FSX's delightful instability going from full screen flight to the desktop and back is always dicey at best and I avoid it when possible...It seems like this would be something pretty easy to include in ASE but if so I've never figured out how to force a non-current time without slaving ASE to the sim time.

 

James

That should be very easy to do without starting FSX, I usually do it since all my flights are use historical weather to match real world flights from flightaware.

Just import the go to the Historical window, input a date and time in the "online dynamic data" section, wait a minute or so for the download to occur and process itself in ASE, and you have access to everything you need for flight planning, even without FSX active.

Thanks, I'll try that.

 

James