I agree it is fantastic.

 

It does seem the fuel calcs are perhaps high - at least on the 738 compared to PMDG performance.  

 

I plugged in KSJC-PHKO, which I have a logbook entry for used same FL (360) and ZFW was within 300#, same alternates, etc.  Flight time was within 17 minutes of predicted,   Actual fuel burn in sim (flight fuel) was 27,761# (5:05 flight time), SimBrief calc'd flight fuel at 32,600# (5:22 flight time).

 

Also looked at RCTP RJAA.  Again, same basic details.  Actual flight fuel was 15,944# (2:47 FLT time), SimBrief predicted 18,500# (2:57 FLT Time).

 

This puts it at 16% to 17% above sim performance on the 738 - but - I have no knowledge of how it is looked at RW.  An extra 5,000# above contingency, holding, final reserves seems high, but, maybe not?

Spectacularly awesome!!!!!

 

Many thanks to the developers/owners of this SimBrief program/site.

 

Kudos,

 

Cuco

San Juan, PR

Wow this is awesome! Do you support navDataPro? as i have already renewed my yearly subscription so obviously do not want to purchase navigraph.

Also, how does it calculate the fuel as there doesnt seem to be anywhere to put weights of pax and cargo?

 

Also, how does it calculate the fuel as there doesnt seem to be anywhere to put weights of pax and cargo?

 

Am I missing something here? I cant find anywhere to add payload at all. How can it get proper calculations and fuel burn not knowing the weights?

HighTowers: There is an option towards the bottom where you can choose your passenger count. If you don't specify the passenger count the system will simply choose a random count for you. To arrive at a payload weight, the system calculates 230lbs of weight per passenger (175lbs for the passenger and 55lbs for their baggage). I recognize that many users are looking for more control over the weight than is offered by the current options, so I will be adding a place where you can specify the desired ZFW soon.

 

GodAtum: Unfortunately Navdata Pro doesn't provide the require infrastructure for a site like mine to use their Navdata. At least not yet.

 

 

I agree it is fantastic.

 

It does seem the fuel calcs are perhaps high - at least on the 738 compared to PMDG performance.  

 

I plugged in KSJC-PHKO, which I have a logbook entry for used same FL (360) and ZFW was within 300#, same alternates, etc.  Flight time was within 17 minutes of predicted,   Actual fuel burn in sim (flight fuel) was 27,761# (5:05 flight time), SimBrief calc'd flight fuel at 32,600# (5:22 flight time).

 

Also looked at RCTP RJAA.  Again, same basic details.  Actual flight fuel was 15,944# (2:47 FLT time), SimBrief predicted 18,500# (2:57 FLT Time).

 

This puts it at 16% to 17% above sim performance on the 738 - but - I have no knowledge of how it is looked at RW.  An extra 5,000# above contingency, holding, final reserves seems high, but, maybe not?

 

Thanks for the detailed report! When did you generate the flight plan in question? I recently updated the fuel burns for the 738 using official Boeing tables and fixed a bug in the fuel flow code so it might be better now. I applied the changes this morning, so if you generated yesterday could you please try again and see if it's any better?

 

I have made a few test briefings since the new fuel figures and I have found the calculated burns to be pretty close to a real life 738 flight plan I have. Please let me know what you find, thanks.

great stuff derek.  Ill have a look at it in the week as im a dispatcher by trade myself.

 

out of interest, does it use cfmu validation ? and make use of RAD ?

 

does it run flight plans using NATS and can it run 4d flightplans ?

 

any help or advice you might need feel free to contact me.

 

cheers

 

Hi tooting,

 

The answer is pretty much no to all those questions unfortunately. I'm not a dispatcher by trade, and being Canadian I don't really have much experience with the Eurocontrol system. I don't really have any plans on adding any of the validation stuff right now, since the tool doesn't generate routes (users need to provide their own routes for the system to parse). The generated ATC flight plans should be in line with the latest ICAO 2012 standard though, if that makes any difference.

 

I'm unfamiliar with the concept of 4d flight planning. Care to elaborate on that?

 

Thanks,

 

 

Thanks for the detailed report! When did you generate the flight plan in question? I recently updated the fuel burns for the 738 using official Boeing tables and fixed a bug in the fuel flow code so it might be better now. I applied the changes this morning, so if you generated yesterday could you please try again and see if it's any better?
 
I have made a few test briefings since the new fuel figures and I have found the calculated burns to be pretty close to a real life 738 flight plan I have. Please let me know what you find, thanks.

 

I ran this morning.  Just re-ran again and the difference was 300# lighter, 2 minutes less, so probably just winds.  I know on the same plan (KSJC-PHKO) FSBuild was high as well, but not as much.  I certainly don't know that one is right and the other wrong, just passing on the observation.

 

Thank you for a great contribution.

Understood Joe, thanks for the report. One more question, did you set your takeoff weight in the FSX payload editor to match the takeoff weight that SimBrief calculated? The weight can have a big difference on the fuel burn, so I just want to make sure.

 

Thanks,

Understood Joe, thanks for the report. One more question, did you set your takeoff weight in the FSX payload editor to match the takeoff weight that SimBrief calculated? The weight can have a big difference on the fuel burn, so I just want to make sure.

 

Thanks,

To be clear, this information was from past flights (logbook), using the same ZFW in sim (within a couple of hundred #).  Fuel load used was as calc'd by FSBuild, including reserves, etc.  So any difference in T/O weight would be flight fuel only.  The MMO was the same (.78) as well.  I know winds could be a variable, that is why I looked at flight time as well, which was within minutes.

 

I am doing some sim flights in the next couple of days and will use this for my planning and see how it does on fuel, most likely in the NG series . . .

 

Thx,

Hi, from the PMDG tutorials:

 

 

This is an estimate of the fuel that’s going to be used by the APU and by
the engines while taxiing. The standard figures used on almost every
NG flight in real life are 30 minutes APU time and 10 minutes taxi time.
The APU burns around 4 lbs (1.8 kg) per minute. Two engine taxi burns
around 27 lbs (12.2 kg) per minute)

 

How do you calculate taxi fuel for the 737?

Simple question - I can't find the answer. How do I delete any of my flight plans I have been testing today and made a couple of errors.

Looked around site but cannot find delete.

 

Not very technically minded but looks like I am going to learn a lot from your site - thanks.

 

Denis B

bursco: There is no need to manually delete your old flight plans. Every time you generate a new flight plan, your old one is automatically deleted by the system!

 

GodAtum: Currently I have defined a "standard" taxi fuel for each aircraft in the system. Where possible I have used the standard taxi fuel listed in the applicable aircraft manual, for the NG series that number is 400lbs. I just did the math on the figures you provided above and arrived at 390lbs so 400lbs sounds very reasonable to me!

 

I think that at large airports I might multiply this value by 2 to allow for any taxi delays, such as being #20 for takeoff or something. Can't remember off the top of my head right now.

 

Thanks,

Derek, what Denis means is probably how to eliminate a plan where you made an error. I too have made a wrong move on one of my plans and wanted to erase it after it was already generated. Now when I go to the scroll list of my previous plans, it is still there and I would also like to know how to remove it from that list. Perhaps what you mean is that I just need to re-plan the same flight correctly and the previous one will go?

Thanks to clarify.

I'm currently flying a MDPC-SEQU trip with my NGX 900 and I'm absolutely amazed with SimBrief! I like to keep things very simple with my sim experience and leave the complex stuff for my RL airline flying. I'm using FSGRW in conjunction with SimBrief and the planning, notams, wx, winds aloft are mostly dead on. I haven't had this much fun siming in a while. It amazes me how many good and talented people are part of our hobby.

 

A big thank you for creating and sharing this program.

Thank you, was going to consider the payware product that is going to be released (?shortly) but since this is FREE ill stick and learn from this instead!