Hello.

 

First of all, let me introduce myself, I'm kind of new in this forums. I'm a Commercial pilot student form Colombia. I'm really exited about PMDG doing the 777 as my first flight ever was on one 777-200, and that's what made me take the decision to be an airliner pilot 12 years latter.

 

I'm a little bit shamed to ask this, as this should have been discussed milions of times (didn't have luck with the search function). Is there any info on what engine variant is the 777-200LR going to be equipped with. As far as I know. There are two options, GE 90-110B1 and GE90-115B1. Are both variants available? And regarding capacity, the worldliner has three optional auxiliary fuel tanks in the baggage compartments, are them present on this simulation? How much range do that auxiliary fuel tanks add to the basic 777-200LR range.

 

Ok, those are regarding the aircraft engines and performance. Now about the environment effects. Are icing effects simulated? If so, how can I do a de-icing prior to take off? I know the wing anti-ice system of a 777 does operate on ground, only if TAT is above 10 Celsius degrees, but the de-icing procedure can not be replaced with simply applying wing anti ice. And taking off in such conditions is potentially deadly. Are the engines EGT and oil temperatures affected by OAT? And will it take more time to the Oil pressure to rise when the aircraft is in a high temp place like in the real thing?.

 

I also would like to know if the "weight on wheels" limitations are simulated. I mean, in the actual aircraft it is impossible to apply brakes before the main gear make contact with the ground, that extends Brake life. If the cabin pressure on touchdown is still higher that the outside pressure, will the aircraft release the remaining pressure? The "weight on wheels" is also related to the thrust reverses, spoiler deployment,.. But I know it is impossible to apply reverse thrust in the air in an high quality aircraft form PMDG.

 

Well I have more questions, but I think these are enough for a single post. And I want to save some of them for when I have the aircraft. So I can test them. Please be kind in your responses as this post has no harm intention. I just want to know more about this aircraft simulation.

 

Regards

Regarding the wing ant ice i assume you mean below 10C TAT.

 

Regarding the environmental effects. Not sure about visible icing effects but i reckon that PMDG somehow implemented the effect of icing on the for example handling of the aircraft when icing occurs with anti ice turned off.

 

I also think that PMDG took into account that the atmospherical conditions affect engine performance etc.

Now it is up to Ryan or one of the beta testers to confirm or deny my reply.

Regarding the wing ant ice i assume you mean below 10C TAT.

 

Regarding the environmental effects. Not sure about visible icing effects but i reckon that PMDG somehow implemented the effect of icing on the for example handling of the aircraft when icing occurs with anti ice turned off.

 

I also think that PMDG took into account that the atmospherical conditions affect engine performance etc.

Now it is up to Ryan or one of the beta testers to confirm or deny my reply.

Welcome, Camilo, and ... most of your questions I'm not able to answer, unfortunately!

 

For the de-icing procedure, it's modelled in current editions of FS2Crew ("4th party addon") and the PMDG T7 is due for its own FS2Crew edition, so I would expect the procedure to be included there.

 

(Regarding current FS2Crew editions - yes, I noticed your "other" banner ...)

I'm a little bit shamed to ask this, as this should have been discussed milions of times (didn't have luck with the search function). Is there any info on what engine variant is the 777-200LR going to be equipped with. As far as I know. There are two options, GE 90-110B1 and GE90-115B1. Are both variants available? And regarding capacity, the worldliner has three optional auxiliary fuel tanks in the baggage compartments, are them present on this simulation? How much range do that auxiliary fuel tanks add to the basic 777-200LR range.

 

 

Hi Camilo,

 

I can't answer your questions regarding icing and weight on wheels with brakes etc., however I can answer your question regarding engines and aux fuel tanks.

 

The PMDG 200LR will come with the 110B1's (110k lbs thrust). They found that most 200LR's are using the 110 model, and most likely the aircraft they got their data from was fitted with 110's.

 

The Aux fuel tanks are available. There was a screenshot of the CDU with the AUX FUEL TANK option (set to 3 in that particular picture). Can't seem to locate the photo now (Also might be shown in Kyle's 2 hour video, but I haven't got around to watching it yet).

Hi Camilo, pretty much every thing you have mentioned is standard on high end fs addons.

 

So you will see WOW sensors working correctly, ambient conditions affecting egt, oil temps etc. What I don't think will be simulated is working deicing, only wing & nacelle anti ice.

 

FYI - icing simulation within FS is very crude unfortunately, it doesn't simulate the disruption of air flow over the wing causing a stall. What it does is increases the

Gross weight of the aircraft gradually if you enter extreme icing conditions, so not very realistic however you will eventually stall if you wait long enough.

Regards

 

 

And regarding capacity, the worldliner has three optional auxiliary fuel tanks in the baggage compartments, are them present on this simulation?

 

 

 

Also might be shown in Kyle's 2 hour video, but I haven't got around to watching it yet).

 

Yep!  I went through every single option PMDG has given us, so it's there somewhere around the 01:00:00 mark (that's where I start running through them, anyway).

Yeah I mean below 10 Celsius degrees. I'm sorry.

 

Yep!  I went through every single option PMDG has given us, so it's there somewhere around the 01:00:00 mark (that's where I start running through them, anyway).

Hello Kyle

 

Where can I find that video you are talking about, I'm really interested to watch it.

Over at Beta Video thread. Good show.

 

 

Where can I find that video you are talking about, I'm really interested to watch it.

 

It's embedded in a thread called Beta Video, linked from another, here now, here:

http://www.youtube.com/watch?v=GMJsXmn7udE

It's embedded in a thread called Beta Video, linked from another, here now, here:

http://www.youtube.com/watch?v=GMJsXmn7udE

Thank you! I will watch it. I really expect someone can answer my other questions meanwhile.

 

 

I really expect someone can answer my other questions meanwhile.

 

At the end of the video, I have the IDENT page up, which shows the engines are GE90-110B1L2s.  This is not user-configurable.

 

You do have the option of one, two or zero aux tanks in the options menu (as shown in the video).

 

I think Rob took care of the rest!

About your question about the cabin pressurization and weight on wheels:
I am not completely sure how it's in the 777 but on Airbus planes the cabin pressure on ground and in flight is always at least 0,7kPa higher than the outside pressure to stiff up the fuselage.

So a weight on wheels command during landing shouldn't influence the cabin pressure. Only if weight on wheels and engines off apply the same time, the cabin will depressurize immediately.

At the end of the video, I have the IDENT page up, which shows the engines are GE90-110B1L2s.  This is not user-configurable.

 

You do have the option of one, two or zero aux tanks in the options menu (as shown in the video).

 

I think Rob took care of the rest!

Interesting, I think the third aux fuel tank is not that necesary anyways. But I always have been wondering how much range do those aux tanks add to the 777W. Can you give me an approximate? I believe that if you select those aux fuel tanks, the baggage compartment capacity will be affected. Am I correct?

About your question about the cabin pressurization and weight on wheels:

I am not completely sure how it's in the 777 but on Airbus planes the cabin pressure on ground and in flight is always at least 0,7kPa higher than the outside pressure to stiff up the fuselage.

So a weight on wheels command during landing shouldn't influence the cabin pressure. Only if weight on wheels and engines off apply the same time, the cabin will depressurize immediately.

As far as I know. Landing with a higher pressure than the outside pressure is potentially dangerous, so I don't think that the pilot have to turn off engines before the remaining pressure is released. it would be unpractical. At least that is what the flight instructor told me in the aircraft's systems class. Of course he can be wrong. So if it is not correct, please tell me.

 

Regards

Interesting, I think the third aux fuel tank is not that necesary anyways. But I always have been wondering how much range do those aux tanks add to the 777W. Can you give me an approximate? I believe that if you select those aux fuel tanks, the baggage compartment capacity will be affected. Am I correct?

 

As far as I know. Landing with a higher pressure than the outside pressure is potentially dangerous, so I don't think that the pilot have to turn off engines before the remaining pressure is released. it would be unpractical. At least that is what the flight instructor told me in the aircraft's systems class. Of course he can be wrong. So if it is not correct, please tell me.

 

Regards

Just think about a balloon or a blimp. At has much more strength with an overpressure in it... The same way it works in an airplane.

Just think about a balloon or a blimp. At has much more strength with an overpressure in it... The same way it works in an airplane.

Ok it can be true, so lets say that it only releases the excess of pressure to prevent structural damage, and leaves a little bit more until the engines are shout down. My question is if those things are actually simulated on this digital replica of the 777, I know they are not that important, but little things like that are what gives you the sensation of "being there".